Sudoku Jigsaw (also known as "Irregular", "Nonomino" or "Geometric Sudoku") is a logic-based, combinatorial number-placement puzzle. Jigsaw Sudokus are very similar to regular Sudoku puzzles.
Regular 12x12 Sudoku that row and column rules apply, but instead of a 4x3 grid they are twelve Jigsaw shapes.
Each row, column and jigsaw shape contains all of the digits 1 through 12.
In all other respects...
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