Jigsaw Sudoku
In jigsaw sudoku, irregularly shaped nine-cell regions replace the standard 3x3 boxes. Row and column rules stay the same, but you'll need to trace the region borders visually.
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Jigsaw Sudoku rules
- 1Rule 1
Every row and column contains the digits 1-9 exactly once.
- 2Rule 2
Instead of square boxes, bold lines mark off irregular nine-cell regions.
- 3Rule 3
Every irregular region also contains the digits 1-9 exactly once.
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