Category
stringclasses
4 values
Task
stringclasses
12 values
Level
stringclasses
5 values
Image_id
stringlengths
1
51
Question
stringclasses
197 values
Choices
listlengths
4
4
Answer
stringclasses
4 values
Explanation
stringlengths
52
839
MentalAnimation
ArrowMoving
Level0
0-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Left, 2 units)--(Left, 1 unit)", "(Forward, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Backward, 2 units)", "(Forward, 1 unit)--(Left, 1 unit)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'CAB': 'Option CAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
1-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 1 unit)--(Left, 1 unit)", "(Backward, 1 unit)--(Left, 1 unit)", "(Left, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Backward, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DAB': 'Option DAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
2-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Forward, 1 unit)", "(Right, 1 unit)--(Right, 1 unit)", "(Right, 1 unit)--(Backward, 1 unit)", "(Right, 2 units)--(Right, 1 unit)" ]
A
{'A': 'Option A is correct because the initial arrow can be transformed into the final arrow.', 'DCB': 'Option DCB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
3-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 2 units)--(Left, 1 unit)", "(Right, 1 unit)--(Left, 2 units)", "(Right, 2 units)--(Left, 2 units)", "(Forward, 1 unit)--(Right, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DAB': 'Option DAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
4-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 2 units)--(Backward, 1 unit)", "(Left, 1 unit)--(Forward, 1 unit)", "(Backward, 1 unit)--(Right, 2 units)", "(Left, 2 units)--(Backward, 2 units)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'ABC': 'Option ABC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
5-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Right, 1 unit)", "(Backward, 2 units)--(Right, 1 unit)", "(Backward, 2 units)--(Right, 1 unit)", "(Right, 1 unit)--(Backward, 2 units)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'BCA': 'Option BCA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
6-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 1 unit)--(Left, 2 units)", "(Right, 1 unit)--(Left, 1 unit)", "(Forward, 2 units)--(Right, 1 unit)", "(Left, 1 unit)--(Backward, 1 unit)" ]
A
{'A': 'Option A is correct because the initial arrow can be transformed into the final arrow.', 'BCD': 'Option BCD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
7-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 2 units)--(Backward, 1 unit)", "(Left, 1 unit)--(Left, 2 units)", "(Backward, 2 units)--(Right, 1 unit)", "(Left, 1 unit)--(Left, 1 unit)" ]
A
{'A': 'Option A is correct because the initial arrow can be transformed into the final arrow.', 'DCB': 'Option DCB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
8-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Left, 2 units)--(Left, 1 unit)", "(Backward, 1 unit)--(Right, 2 units)", "(Backward, 2 units)--(Right, 2 units)", "(Backward, 1 unit)--(Backward, 1 unit)" ]
A
{'A': 'Option A is correct because the initial arrow can be transformed into the final arrow.', 'BCD': 'Option BCD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
9-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Backward, 1 unit)", "(Backward, 1 unit)--(Backward, 2 units)", "(Right, 1 unit)--(Right, 1 unit)", "(Left, 1 unit)--(Backward, 2 units)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'ADC': 'Option ADC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
10-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Left, 1 unit)", "(Left, 2 units)--(Backward, 2 units)", "(Forward, 1 unit)--(Backward, 1 unit)", "(Left, 1 unit)--(Forward, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'CDA': 'Option CDA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
11-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Backward, 1 unit)", "(Forward, 2 units)--(Left, 2 units)", "(Left, 1 unit)--(Backward, 1 unit)", "(Left, 2 units)--(Right, 1 unit)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'BCA': 'Option BCA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
12-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Left, 2 units)", "(Right, 2 units)--(Right, 2 units)", "(Right, 1 unit)--(Right, 1 unit)", "(Backward, 2 units)--(Backward, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'DAC': 'Option DAC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
13-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Right, 1 unit)", "(Forward, 1 unit)--(Backward, 1 unit)", "(Left, 1 unit)--(Right, 1 unit)", "(Left, 1 unit)--(Right, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'CDA': 'Option CDA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
14-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Left, 1 unit)--(Forward, 1 unit)", "(Left, 2 units)--(Backward, 2 units)", "(Left, 2 units)--(Right, 2 units)", "(Left, 2 units)--(Right, 2 units)" ]
A
{'A': 'Option A is correct because the initial arrow can be transformed into the final arrow.', 'DCB': 'Option DCB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
15-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Left, 2 units)--(Backward, 1 unit)", "(Forward, 1 unit)--(Left, 1 unit)", "(Left, 2 units)--(Left, 1 unit)", "(Left, 1 unit)--(Left, 1 unit)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'BAC': 'Option BAC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
16-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 2 units)--(Backward, 1 unit)", "(Left, 1 unit)--(Forward, 1 unit)", "(Left, 2 units)--(Backward, 1 unit)", "(Forward, 2 units)--(Left, 2 units)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DBA': 'Option DBA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
17-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 1 unit)--(Right, 1 unit)", "(Backward, 1 unit)--(Left, 1 unit)", "(Backward, 1 unit)--(Left, 1 unit)", "(Right, 2 units)--(Backward, 2 units)" ]
A
{'A': 'Option A is correct because the initial arrow can be transformed into the final arrow.', 'CBD': 'Option CBD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
18-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Backward, 1 unit)", "(Left, 2 units)--(Right, 1 unit)", "(Left, 1 unit)--(Right, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'DAC': 'Option DAC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
19-3-3-2
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 2 units)--(Right, 2 units)", "(Forward, 2 units)--(Backward, 1 unit)", "(Forward, 2 units)--(Right, 1 unit)", "(Right, 1 unit)--(Left, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DBA': 'Option DBA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
20-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Left, 2 units)--(Left, 1 unit)", "(Forward, 1 unit)--(Right, 1 unit)--(Right, 2 units)", "(Right, 1 unit)--(Backward, 1 unit)--(Left, 1 unit)", "(Right, 2 units)--(Left, 1 unit)--(Backward, 2 units)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'BDA': 'Option BDA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
21-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)", "(Left, 1 unit)--(Left, 2 units)--(Backward, 2 units)", "(Backward, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Right, 1 unit)--(Backward, 2 units)--(Backward, 2 units)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'ADC': 'Option ADC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
22-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 1 unit)--(Forward, 1 unit)--(Right, 1 unit)", "(Backward, 2 units)--(Left, 1 unit)--(Left, 1 unit)", "(Right, 1 unit)--(Backward, 1 unit)--(Left, 2 units)", "(Right, 1 unit)--(Backward, 1 unit)--(Left, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'BAD': 'Option BAD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
23-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 2 units)--(Right, 1 unit)--(Backward, 1 unit)", "(Left, 2 units)--(Left, 2 units)--(Backward, 1 unit)", "(Left, 2 units)--(Backward, 2 units)--(Backward, 2 units)", "(Backward, 2 units)--(Backward, 1 unit)--(Left, 2 units)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'ACD': 'Option ACD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
24-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Left, 2 units)--(Backward, 1 unit)--(Right, 1 unit)", "(Left, 1 unit)--(Left, 1 unit)--(Left, 1 unit)", "(Left, 1 unit)--(Forward, 1 unit)--(Left, 1 unit)", "(Backward, 1 unit)--(Right, 2 units)--(Right, 2 units)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'ABC': 'Option ABC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
25-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Left, 1 unit)--(Left, 2 units)", "(Forward, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)", "(Left, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'ACD': 'Option ACD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
26-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 2 units)--(Backward, 2 units)--(Backward, 1 unit)", "(Right, 1 unit)--(Backward, 2 units)--(Backward, 1 unit)", "(Forward, 1 unit)--(Left, 1 unit)--(Backward, 2 units)", "(Right, 1 unit)--(Left, 1 unit)--(Backward, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DAB': 'Option DAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
27-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Forward, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Right, 1 unit)--(Left, 1 unit)--(Forward, 1 unit)", "(Forward, 2 units)--(Backward, 2 units)--(Backward, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'ACD': 'Option ACD is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
28-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)", "(Backward, 1 unit)--(Backward, 2 units)--(Left, 1 unit)", "(Right, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Backward, 2 units)--(Left, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DBA': 'Option DBA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
29-3-3-3
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 2 units)--(Backward, 1 unit)--(Right, 1 unit)", "(Backward, 1 unit)--(Forward, 1 unit)--(Left, 2 units)", "(Right, 1 unit)--(Forward, 1 unit)--(Backward, 1 unit)", "(Right, 1 unit)--(Forward, 1 unit)--(Backward, 2 units)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'CBA': 'Option CBA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
30-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 2 units)--(Backward, 1 unit)--(Left, 2 units)--(Backward, 1 unit)", "(Right, 1 unit)--(Forward, 1 unit)--(Backward, 1 unit)--(Forward, 1 unit)", "(Forward, 2 units)--(Backward, 2 units)--(Backward, 2 units)--(Backward, 2 units)", "(Right, 1 unit)--(Forward, 1 unit)--(Backward, 2 units)--(Right, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'DCA': 'Option DCA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
31-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Left, 2 units)--(Backward, 2 units)--(Backward, 1 unit)--(Forward, 1 unit)", "(Left, 1 unit)--(Backward, 1 unit)--(Left, 1 unit)--(Backward, 1 unit)", "(Forward, 1 unit)--(Backward, 1 unit)--(Backward, 1 unit)--(Forward, 1 unit)", "(Left, 2 units)--(Right, 2 units)--(Backward, 2 units)--(Left, 2 units)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'BAC': 'Option BAC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
32-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)--(Backward, 2 units)", "(Backward, 1 unit)--(Backward, 1 unit)--(Forward, 1 unit)--(Right, 1 unit)", "(Backward, 1 unit)--(Backward, 1 unit)--(Backward, 1 unit)--(Backward, 2 units)", "(Forward, 1 unit)--(Left, 1 unit)--(Left, 2 units)--(Backward, 2 units)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'BAC': 'Option BAC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
33-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Backward, 1 unit)--(Right, 2 units)--(Right, 1 unit)", "(Backward, 1 unit)--(Left, 2 units)--(Left, 2 units)--(Left, 2 units)", "(Right, 2 units)--(Backward, 2 units)--(Backward, 2 units)--(Right, 1 unit)", "(Forward, 1 unit)--(Right, 1 unit)--(Forward, 1 unit)--(Right, 1 unit)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'CAB': 'Option CAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
34-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Forward, 1 unit)--(Left, 1 unit)--(Backward, 1 unit)--(Right, 2 units)", "(Left, 1 unit)--(Backward, 1 unit)--(Forward, 1 unit)--(Backward, 2 units)", "(Backward, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Backward, 1 unit)--(Left, 1 unit)--(Left, 2 units)--(Backward, 2 units)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'ADB': 'Option ADB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
35-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Right, 1 unit)--(Right, 2 units)--(Backward, 2 units)", "(Right, 1 unit)--(Backward, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Backward, 1 unit)--(Left, 1 unit)--(Left, 1 unit)--(Left, 1 unit)", "(Backward, 1 unit)--(Backward, 2 units)--(Backward, 2 units)--(Backward, 1 unit)" ]
B
{'B': 'Option B is correct because the initial arrow can be transformed into the final arrow.', 'ADC': 'Option ADC is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
36-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Backward, 1 unit)--(Right, 1 unit)--(Backward, 2 units)--(Backward, 2 units)", "(Right, 1 unit)--(Right, 1 unit)--(Right, 2 units)--(Backward, 2 units)", "(Left, 1 unit)--(Right, 1 unit)--(Backward, 2 units)--(Left, 2 units)", "(Backward, 1 unit)--(Right, 1 unit)--(Backward, 2 units)--(Left, 1 unit)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'CAB': 'Option CAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
37-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 1 unit)--(Right, 2 units)--(Right, 2 units)--(Backward, 2 units)", "(Backward, 1 unit)--(Right, 1 unit)--(Right, 1 unit)--(Backward, 1 unit)", "(Right, 1 unit)--(Backward, 2 units)--(Left, 1 unit)--(Backward, 1 unit)", "(Right, 1 unit)--(Right, 1 unit)--(Right, 2 units)--(Backward, 2 units)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DAB': 'Option DAB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
38-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 2 units)--(Backward, 1 unit)--(Backward, 1 unit)--(Left, 2 units)", "(Forward, 2 units)--(Right, 2 units)--(Backward, 1 unit)--(Forward, 1 unit)", "(Forward, 2 units)--(Right, 2 units)--(Backward, 1 unit)--(Left, 2 units)", "(Forward, 2 units)--(Right, 2 units)--(Right, 2 units)--(Right, 1 unit)" ]
D
{'D': 'Option D is correct because the initial arrow can be transformed into the final arrow.', 'ACB': 'Option ACB is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level0
39-3-3-4
In the diagram, the red arrow is the initial arrow, and the green arrow is the final arrow. The arrow can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. Which of the following paths can make the arrow move from the starting position to the ending position? Please answer from options A, B, C, or D.
[ "(Right, 2 units)--(Right, 1 unit)--(Backward, 1 unit)--(Backward, 2 units)", "(Right, 1 unit)--(Right, 2 units)--(Right, 1 unit)--(Backward, 2 units)", "(Backward, 2 units)--(Backward, 2 units)--(Right, 1 unit)--(Right, 1 unit)", "(Backward, 2 units)--(Left, 1 unit)--(Left, 2 units)--(Left, 1 unit)" ]
C
{'C': 'Option C is correct because the initial arrow can be transformed into the final arrow.', 'DBA': 'Option DBA is incorrect because the initial arrow cannot be transformed into the final arrow.'}
MentalAnimation
ArrowMoving
Level1
0-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 0) Left, 2 units)--((1, 0) Right, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
1-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((2, 1) Forward, 1 unit)--((0, 1) Left, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
2-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((1, 1) Backward, 1 unit)--((2, 1) Right, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
3-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 0) Backward, 1 unit)--((2, 1) Forward, 2 units)", "((2, 0) Right, 1 unit)--((1, 0) Backward, 1 unit)", "((2, 1) Left, 1 unit)--((2, 0) Right, 1 unit)", "((2, 1) Forward, 2 units)--((0, 1) Left, 1 unit)" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'DCB': 'Option DCB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
4-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((0, 0) Backward, 2 units)--((2, 0) Backward, 1 unit)", "((0, 2) Forward, 2 units)--((2, 2) Right, 2 units)", "((0, 1) Forward, 1 unit)--((1, 1) Left, 1 unit)", "((0, 0) Right, 2 units)--((0, 1) Forward, 1 unit)" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
5-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((0, 0) Left, 1 unit)--((2, 1) Left, 1 unit)", "((2, 1) Forward, 2 units)--((0, 0) Left, 2 units)", "((2, 2) Backward, 1 unit)--((2, 1) Backward, 1 unit)", "((0, 0) Backward, 2 units)--((2, 1) Forward, 1 unit)" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'DCB': 'Option DCB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
6-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((2, 0) Forward, 2 units)--((0, 0) Right, 1 unit)", "((1, 2) Right, 1 unit)--((2, 0) Forward, 2 units)", "((2, 0) Forward, 1 unit)--((0, 0) Right, 2 units)", "((1, 2) Right, 1 unit)--((2, 2) Backward, 1 unit)" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'CAB': 'Option CAB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
7-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 2) Forward, 1 unit)--((0, 0) Left, 1 unit)", "((0, 2) Backward, 1 unit)--((2, 0) Left, 1 unit)", "((0, 0) Left, 1 unit)--((0, 1) Right, 1 unit)", "((1, 2) Backward, 1 unit)--((0, 2) Backward, 1 unit)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'BAD': 'Option BAD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
8-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((1, 0) Left, 1 unit)--((0, 0) Backward, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'ABC': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
9-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 0) Forward, 2 units)--((1, 2) Right, 1 unit)", "((1, 0) Left, 1 unit)--((2, 1) Forward, 1 unit)", "((2, 1) Forward, 1 unit)--((1, 0) Forward, 1 unit)", "((1, 1) Left, 1 unit)--((2, 1) Backward, 1 unit)" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'CDB': 'Option CDB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
10-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 2) Left, 2 units)--((1, 0) Backward, 2 units)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'ACD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
11-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 0) Right, 1 unit)--((2, 0) Right, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'ABC': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
12-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 2) Backward, 1 unit)--((2, 1) Forward, 2 units)", "((2, 1) Right, 1 unit)--((1, 0) Right, 1 unit)", "((0, 0) Left, 1 unit)--((2, 2) Right, 1 unit)", "((2, 1) Forward, 1 unit)--((1, 1) Backward, 1 unit)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'DBA': 'Option DBA is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
13-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 1) Left, 1 unit)--((1, 0) Right, 1 unit)", "((1, 0) Left, 1 unit)--((2, 0) Backward, 2 units)", "((1, 0) Left, 1 unit)--((1, 0) Forward, 1 unit)", "((1, 1) Right, 1 unit)--((0, 0) Right, 1 unit)" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'DBC': 'Option DBC is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
14-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 0) Backward, 1 unit)--((1, 2) Backward, 1 unit)", "((1, 1) Left, 1 unit)--((1, 1) Forward, 1 unit)", "((1, 1) Right, 1 unit)--((1, 1) Left, 1 unit)", "((1, 2) Forward, 1 unit)--((0, 2) Backward, 1 unit)" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'DCB': 'Option DCB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
15-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 1) Backward, 1 unit)--((0, 2) Right, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'ACD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
16-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 1) Right, 1 unit)--((0, 0) Backward, 2 units)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'ACD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
17-3-3-2
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 0) Right, 1 unit)--((0, 1) Forward, 2 units)", "((0, 2) Forward, 2 units)--((2, 1) Forward, 1 unit)", "((1, 0) Forward, 1 unit)--((2, 0) Right, 2 units)", "((0, 1) Right, 1 unit)--((2, 0) Forward, 2 units)" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'BCA': 'Option BCA is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
18-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((2, 2) Right, 1 unit)--((1, 2) Backward, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'ABC': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
19-3-3-2
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((2, 1) Forward, 2 units)--((1, 2) Forward, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'ABC': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
20-3-3-3
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((2, 1) Forward, 1 unit)--((1, 0) Left, 1 unit)--((2, 0) Right, 2 units)", "((2, 2) Forward, 1 unit)--((2, 0) Forward, 1 unit)--((2, 0) Backward, 1 unit)", "((2, 2) Forward, 1 unit)--((2, 2) Backward, 2 units)--((1, 0) Forward, 1 unit)", "((2, 0) Forward, 1 unit)--((2, 0) Backward, 1 unit)--((1, 0) Forward, 1 unit)" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'DAC': 'Option DAC is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
21-3-3-3
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((0, 0) Left, 1 unit)--((0, 1) Right, 2 units)--((2, 1) Left, 1 unit)", "((1, 1) Left, 1 unit)--((0, 0) Left, 2 units)--((2, 1) Left, 1 unit)", "((0, 0) Left, 1 unit)--((2, 1) Backward, 1 unit)--((2, 2) Left, 1 unit)", "((2, 1) Backward, 1 unit)--((0, 0) Backward, 1 unit)--((2, 1) Right, 1 unit)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'BDA': 'Option BDA is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
22-3-3-3
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((1, 2) Left, 1 unit)--((0, 1) Forward, 1 unit)--((0, 0) Forward, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'ABC': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
23-3-3-3
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 1) Left, 1 unit)--((0, 0) Left, 2 units)--((0, 1) Right, 2 units)", "((0, 1) Backward, 1 unit)--((2, 2) Right, 2 units)--((0, 1) Backward, 1 unit)", "((2, 2) Right, 2 units)--((1, 1) Left, 1 unit)--((0, 1) Forward, 1 unit)", "((0, 1) Forward, 1 unit)--((1, 1) Forward, 1 unit)--((2, 1) Backward, 2 units)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option ABD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
24-3-3-3
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((2, 2) Right, 2 units)--((1, 2) Forward, 1 unit)--((1, 1) Left, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
25-3-3-3
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 2) Forward, 1 unit)--((1, 1) Left, 1 unit)--((1, 2) Forward, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'ACD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
26-3-3-3
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((2, 0) Left, 2 units)--((0, 2) Left, 1 unit)--((2, 2) Forward, 1 unit)", "((0, 0) Left, 2 units)--((2, 0) Backward, 1 unit)--((0, 0) Backward, 2 units)", "((0, 1) Left, 1 unit)--((1, 1) Left, 1 unit)--((2, 0) Forward, 1 unit)", "((0, 0) Backward, 2 units)--((0, 0) Backward, 1 unit)--((0, 2) Backward, 1 unit)" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'ACB': 'Option ACB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
27-3-3-3
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((0, 1) Right, 1 unit)--((2, 2) Forward, 1 unit)--((1, 2) Left, 2 units)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option ABD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
28-3-3-3
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 2) Left, 1 unit)--((2, 2) Backward, 2 units)--((0, 1) Right, 1 unit)", "((1, 2) Left, 1 unit)--((0, 1) Backward, 1 unit)--((2, 0) Left, 1 unit)", "((2, 0) Left, 2 units)--((2, 0) Backward, 1 unit)--((1, 2) Right, 1 unit)", "((2, 0) Left, 2 units)--((2, 2) Backward, 1 unit)--((0, 2) Backward, 1 unit)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ADB': 'Option ADB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
29-3-3-3
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((2, 2) Backward, 2 units)--((1, 0) Right, 1 unit)--((0, 1) Right, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the target state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
30-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((0, 0) Forward, 1 unit)--((1, 2) Forward, 1 unit)--((1, 2) Backward, 1 unit)--((2, 1) Backward, 1 unit)", "((2, 1) Right, 1 unit)--((1, 1) Left, 1 unit)--((0, 0) Forward, 1 unit)--((2, 0) Backward, 2 units)", "((0, 1) Backward, 1 unit)--((0, 0) Left, 2 units)--((1, 2) Left, 1 unit)--((2, 1) Backward, 1 unit)", "((0, 1) Right, 2 units)--((0, 1) Backward, 1 unit)--((1, 1) Left, 1 unit)--((0, 1) Right, 1 unit)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ADB': 'Option ADB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
31-3-3-4
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((1, 0) Backward, 1 unit)--((2, 2) Backward, 1 unit)--((2, 1) Forward, 1 unit)--((2, 2) Left, 2 units)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
32-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((2, 1) Right, 2 units)--((1, 0) Left, 2 units)--((1, 1) Backward, 1 unit)--((2, 1) Backward, 2 units)", "((0, 1) Forward, 2 units)--((2, 1) Backward, 2 units)--((0, 1) Right, 1 unit)--((0, 2) Right, 1 unit)", "((1, 0) Backward, 1 unit)--((0, 1) Forward, 1 unit)--((0, 1) Right, 1 unit)--((0, 2) Right, 2 units)", "((1, 0) Left, 2 units)--((0, 1) Forward, 1 unit)--((0, 1) Left, 1 unit)--((1, 2) Backward, 2 units)" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'CAB': 'Option CAB is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
33-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((2, 2) Right, 2 units)--((1, 2) Forward, 1 unit)--((0, 0) Right, 2 units)--((2, 0) Right, 2 units)", "((1, 2) Forward, 1 unit)--((0, 2) Backward, 1 unit)--((2, 2) Right, 2 units)--((2, 2) Left, 2 units)", "((1, 1) Left, 1 unit)--((0, 0) Backward, 1 unit)--((1, 0) Left, 1 unit)--((2, 0) Backward, 2 units)", "((1, 2) Left, 2 units)--((2, 2) Backward, 2 units)--((0, 0) Backward, 1 unit)--((2, 0) Left, 1 unit)" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'DCA': 'Option DCA is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
34-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 0) Left, 1 unit)--((1, 2) Right, 2 units)--((2, 0) Backward, 2 units)--((1, 2) Backward, 1 unit)", "((1, 0) Left, 1 unit)--((2, 0) Backward, 1 unit)--((2, 1) Left, 1 unit)--((2, 0) Right, 1 unit)", "((2, 0) Left, 1 unit)--((2, 0) Right, 1 unit)--((1, 0) Right, 2 units)--((0, 0) Right, 1 unit)", "((2, 0) Left, 1 unit)--((2, 0) Backward, 1 unit)--((0, 0) Forward, 2 units)--((0, 2) Backward, 1 unit)" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'DAC': 'Option DAC is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
35-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 1) Left, 1 unit)--((2, 1) Backward, 1 unit)--((1, 2) Left, 1 unit)--((2, 0) Forward, 1 unit)", "((2, 0) Left, 1 unit)--((1, 1) Forward, 1 unit)--((1, 0) Right, 1 unit)--((2, 2) Right, 2 units)", "((2, 2) Forward, 2 units)--((2, 2) Left, 1 unit)--((1, 2) Forward, 1 unit)--((2, 0) Backward, 2 units)", "((2, 0) Left, 1 unit)--((1, 0) Right, 2 units)--((1, 0) Right, 1 unit)--((0, 0) Right, 2 units)" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the target state.', 'BAC': 'Option BAC is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
36-3-3-4
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((2, 2) Left, 2 units)--((1, 2) Backward, 1 unit)--((1, 0) Right, 1 unit)--((0, 2) Backward, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'ACD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
37-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 1) Right, 1 unit)--((0, 1) Right, 1 unit)--((2, 0) Left, 2 units)--((0, 1) Right, 1 unit)", "((2, 2) Left, 1 unit)--((1, 1) Right, 1 unit)--((2, 0) Forward, 2 units)--((0, 1) Forward, 2 units)", "((0, 0) Right, 1 unit)--((1, 1) Right, 1 unit)--((0, 1) Backward, 1 unit)--((1, 2) Right, 1 unit)", "((1, 1) Left, 1 unit)--((2, 2) Forward, 2 units)--((1, 0) Right, 1 unit)--((2, 0) Forward, 2 units)" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the target state.', 'ACD': 'Option ACD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
38-3-3-4
The left image shows the initial state, and the right image shows the final state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. Which of the following paths can transform the grid from the initial state to the final state? Please answer from options A, B, C, or D.
[ "((1, 1) Left, 1 unit)--((1, 0) Left, 2 units)--((1, 2) Backward, 1 unit)--((0, 1) Backward, 2 units)", "((1, 0) Backward, 1 unit)--((0, 0) Right, 2 units)--((1, 1) Right, 1 unit)--((0, 2) Right, 1 unit)", "((1, 0) Backward, 1 unit)--((1, 1) Right, 1 unit)--((2, 1) Right, 1 unit)--((0, 0) Right, 2 units)", "((1, 1) Left, 1 unit)--((1, 0) Backward, 1 unit)--((0, 1) Backward, 1 unit)--((0, 0) Right, 2 units)" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'BAD': 'Option BAD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
ArrowMoving
Level1
39-3-3-4
The left image shows the initial state. Arrows can move in four directions (forward, backward, left, right), where 'forward' always refers to the current direction the arrow is pointing. After each movement, the arrow's direction is updated to the direction of movement. If the target position is empty, the arrow can move there directly; otherwise, it needs to swap with the arrow at the target position, and both arrows' movements should satisfy the aforementioned requirements. After the transformations '((1, 1) Forward, 1 unit)--((0, 1) Left, 1 unit)--((0, 0) Backward, 2 units)--((0, 2) Right, 1 unit)', which state from the options can be reached? Please answer from options A, B, C, or D.
[ "A", "B", "C", "D" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the target state.', 'ABD': 'Option BCD is incorrect because the initial state cannot be transformed into the target state.'}
MentalAnimation
BlockMoving
Level0
0-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 0, 0) y+ -- (1, 1, 0) y- -- (2, 1, 0) y+", "(1, 0, 0) y+ -- (2, 1, 0) y+ -- (2, 0, 0) y+", "(2, 2, 0) x- -- (2, 0, 0) x-", "(1, 0, 0) x- -- (2, 0, 0) y+ -- (2, 2, 0) y-" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the final state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
1-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 0, 0) y+ -- (1, 1, 0) y- -- (1, 1, 0) y+", "(0, 0, 0) y+ -- (2, 0, 0) x- -- (1, 0, 0) x-", "(0, 1, 0) y- -- (1, 1, 0) x- -- (2, 0, 0) y+", "(2, 0, 0) y+ -- (2, 1, 0) y- -- (0, 0, 0) x+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
2-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 2, 0) x- -- (1, 1, 0) y- -- (2, 1, 0) y+", "(1, 1, 0) x+ -- (2, 1, 0) y+ -- (2, 2, 0) y-", "(1, 1, 0) x- -- (2, 1, 0) y- -- (0, 2, 0) y-", "(1, 2, 0) x+ -- (1, 1, 0) x+ -- (1, 1, 0) y+" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the final state.', 'ACD': 'Option ACD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
3-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(0, 0, 0) y+ -- (1, 0, 0) x+ -- (1, 0, 0) x+", "(1, 0, 0) y+ -- (1, 0, 0) y+", "(1, 1, 0) y+ -- (2, 0, 0) x- -- (1, 2, 0) x+", "(2, 0, 0) y+" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the final state.', 'ABD': 'Option ABD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
4-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(2, 0, 0) y+ -- (2, 0, 0) x-", "(2, 0, 0) y+", "(1, 0, 0) x+ -- (1, 0, 0) y+ -- (2, 0, 0) x-", "(1, 0, 0) x- -- (2, 1, 0) x- -- (1, 0, 0) y+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
5-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 2, 0) x- -- (0, 2, 0) y- -- (0, 1, 0) x+", "(1, 2, 0) y- -- (1, 1, 0) x-", "(0, 2, 0) x+ -- (0, 1, 0) y+ -- (1, 1, 0) y+", "(1, 1, 0) x- -- (1, 2, 0) y- -- (0, 0, 0) x+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
6-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(0, 0, 0) y+ -- (0, 2, 0) x+", "(0, 2, 0) y-", "(2, 1, 0) x- -- (0, 2, 0) y- -- (0, 1, 0) y+", "(0, 2, 0) y- -- (0, 0, 0) y+ -- (0, 0, 0) y+" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the final state.', 'ABD': 'Option ABD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
7-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 1, 0) y- -- (1, 1, 0) x- -- (1, 0, 0) y+", "(2, 1, 0) y- -- (1, 1, 0) y+", "(1, 1, 0) x- -- (2, 1, 0) y-", "(1, 0, 0) y+ -- (0, 2, 0) x+ -- (0, 0, 0) y+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
8-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 2, 0) x- -- (1, 1, 0) y- -- (2, 1, 0) y-", "(0, 2, 0) y-", "(1, 2, 0) x- -- (0, 2, 0) x+", "(1, 2, 0) x+ -- (2, 1, 0) y-" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the final state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
9-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(0, 0, 0) x+ -- (2, 1, 0) y- -- (0, 1, 0) y-", "(0, 1, 0) y+ -- (2, 0, 0) y+ -- (0, 0, 0) y+", "(1, 1, 0) x- -- (1, 1, 0) y- -- (2, 1, 0) x-", "(1, 1, 0) y+ -- (1, 2, 0) y- -- (1, 1, 0) x+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
10-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 1, 0) x- -- (2, 0, 0) y+", "(1, 1, 0) x+ -- (1, 1, 0) y+ -- (2, 0, 0) y+", "(1, 0, 0) x+ -- (2, 0, 0) x- -- (0, 0, 0) x+", "(1, 0, 0) y+ -- (1, 0, 0) x- -- (1, 1, 0) x-" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the final state.', 'ABD': 'Option ABD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
11-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 1, 0) x- -- (1, 1, 0) y+ -- (1, 1, 0) y-", "(1, 2, 0) x+ -- (0, 0, 0) x+ -- (1, 0, 0) x+", "(1, 1, 0) x- -- (2, 1, 0) x- -- (2, 1, 0) y+", "(1, 1, 0) y+" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the final state.', 'ACD': 'Option ACD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
12-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(0, 2, 0) x+ -- (0, 1, 0) x+ -- (0, 0, 0) y+", "(0, 0, 0) x+ -- (2, 2, 0) x-", "(0, 0, 0) y+ -- (2, 2, 0) x- -- (2, 2, 0) y-", "(0, 2, 0) x+ -- (0, 1, 0) y- -- (0, 0, 0) y+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
13-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(2, 1, 0) x- -- (2, 2, 0) x- -- (1, 2, 0) x+", "(0, 0, 0) x+ -- (2, 2, 0) y-", "(2, 2, 0) y-", "(1, 2, 0) y- -- (1, 1, 0) x+" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the final state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
14-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 2, 0) x+ -- (0, 0, 0) y+ -- (0, 1, 0) y+", "(1, 1, 0) y- -- (1, 2, 0) y-", "(1, 1, 0) x+ -- (2, 2, 0) y-", "(2, 2, 0) y- -- (1, 2, 0) x-" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the final state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
15-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 0, 0) y+ -- (1, 0, 0) x+ -- (1, 1, 0) y+", "(1, 2, 0) x-", "(0, 0, 0) x+", "(0, 1, 0) y+" ]
A
{'A': 'Option A is correct because the initial state can be transformed into the final state.', 'BCD': 'Option BCD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
16-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(2, 0, 0) y+", "(1, 0, 0) x- -- (1, 1, 0) x- -- (0, 1, 0) x+", "(0, 1, 0) y- -- (0, 2, 0) y- -- (2, 0, 0) y+", "(1, 1, 0) x+" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the final state.', 'ACD': 'Option ACD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
17-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(1, 2, 0) y- -- (2, 1, 0) y+", "(2, 1, 0) y+ -- (0, 2, 0) y-", "(1, 2, 0) x- -- (2, 1, 0) y+", "(1, 2, 0) x- -- (0, 2, 0) y- -- (0, 1, 0) y+" ]
D
{'D': 'Option D is correct because the initial state can be transformed into the final state.', 'ABC': 'Option ABC is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
18-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(0, 1, 0) x+ -- (2, 2, 0) y-", "(1, 1, 0) x- -- (1, 1, 0) x- -- (1, 0, 0) y+", "(0, 2, 0) x+ -- (2, 2, 0) y-", "(1, 1, 0) x- -- (1, 1, 0) y- -- (2, 2, 0) x-" ]
B
{'B': 'Option B is correct because the initial state can be transformed into the final state.', 'ACD': 'Option ACD is incorrect because the initial state cannot be transformed into the final state.'}
MentalAnimation
BlockMoving
Level0
19-3-3-1-2
The top row of images shows different views of the initial state of a cube stack, while the bottom row shows different views of the final state after transformation. During the transformation process, blocks can move one unit in any direction (forward, backward, left, right, up, down). If the target position is empty, the block can move there directly; if the target position already has a block, they swap places. Blocks cannot float in the air. If a block is moved away from a position, any block above it will fall down until reaching a supporting surface. The xyz axes are shown in the diagram, and each block's position can be precisely identified using coordinates (x1,y1,z1). Which of the following transformation sequences can change the cube stack from the initial state to the final state shown in the diagram? Please answer from options A, B, C, or D.
[ "(2, 0, 0) x- -- (0, 1, 0) y+ -- (2, 0, 0) y+", "(1, 0, 0) x- -- (2, 1, 0) y- -- (0, 1, 0) y+", "(2, 1, 0) y- -- (1, 1, 0) x+ -- (1, 1, 0) y-", "(2, 0, 0) y+ -- (0, 1, 0) x+ -- (1, 1, 0) x-" ]
C
{'C': 'Option C is correct because the initial state can be transformed into the final state.', 'ABD': 'Option ABD is incorrect because the initial state cannot be transformed into the final state.'}