Double Jigsaw Sudoku: Rules and Explanatory Diagrams
A Double Jigsaw Sudoku is a combination of Double Sudoku and Jigsaw Sudoku.
1. Each grid must follow the classic Sudoku rules:
- fill each empty cell with a number from 1 to 9.
- each row, column, and block (or box) must contain each number from 1 to 9 exactly once.
2. The shared cells between the two grids must simultaneously satisfy the constraints of both grids.
3. Instead of standard 3x3 square blocks, the blocks have irregular shapes.
Rows
Columns
Blocks (or boxes)
