Jigsaw Sudoku: Rules and Explanatory Diagrams
The rules of Jigsaw Sudoku are simple.
1. The rules of classic Sudoku apply:
- enter a number between 1 and 9 in each empty cell of the 9x9 grid.
- each row, column, and block (or box) must contain each number exactly once.
2. The difference is that, instead of 3×3 square blocks, the blocks have irregular shapes.
Row
Column
Block (or box)
