MR-003

Choose the option that completes the matrix:

Pattern: Across columns, the fill alternates filled → outline → filled. Down rows, the shape changes. Match both rules.

So the missing cell must be:

• Picking the first pattern you see without checking it against all rows/columns.
• Ignoring the simplest rule (counts, rotations, alternations) and jumping to a complex story.
• Not testing your rule on the middle row/column (where many puzzles “break” bad rules).