A plausible option may fit the row but fail the column.
Matrices
The missing cell must satisfy the rule across its row and down its column.
Your checklist
1The row rule
2The column rule
3Rotation composition
4Fill combinations
5Position and count constraints
Complete the 3 x 3 matrix.
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Complete the 3 x 3 matrix.
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Avoid these mistakes
Recheck the horizontal relationship before choosing.
Apply the rule
Choose a short guided set. Each question appears separately so the visual rule stays clear.