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Irregular NxN Sudoku Solver

Tool/solver to resolve irregular sudoku (any size), ie with a NxN grid and non-square blocks, the rule of rows and columns remain unchanged.

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Irregular NxN Sudoku Solver -

Tag(s) : Number Games

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# Irregular NxN Sudoku Solver

## Solve a irregular sudoku grid

 Resolution Compute all solutions Step by Step Solution

### How to fill the Jigsaw Sudoku grid?

Irregular Sudoku NxN (called Jigsaw or Chaos) is identical to a classic sudoku, except for the blocks that are no longer regular square elements, but polyominoes that form a kind of jigsaw puzzle.

Indicates cells values one by one (it is also possible to make a copy-paste with space as empty cell) as in a classic sudoku.

Only letters or digits are allowed.

Blocks of 9 cells can be selected within predefined examples under the grid or indicated manually by clicking on borders.

Example: A 9x9 grid (copy/paste) forms nonominos `97 1 5 5 9 2 18 4 8 7 26 92 3 6 2 9 19 457 ` to get:

 9 7 ␣ 1 ␣ ␣ ␣ ␣ 5 ␣ ␣ 5 ␣ 9 ␣ 2 ␣ 1 8 ␣ ␣ ␣ 4 ␣ ␣ ␣ ␣ ␣ ␣ ␣ ␣ 8 ␣ ␣ ␣ ␣ ␣ ␣ ␣ 7 ␣ ␣ ␣ ␣ ␣ ␣ ␣ ␣ ␣ 2 6 ␣ ␣ 9 2 ␣ ␣ 3 ␣ ␣ ␣ ␣ 6 ␣ ␣ ␣ 2 ␣ ␣ 9 ␣ ␣ ␣ ␣ 1 9 ␣ 4 5 7 ␣

For larger grids, the solver only accepts one character per cell, so use letters.

Example: Write A for 10, B for 11 etc.

### How does the step by step works?

Software solves the Sudoku, similarly to an human, and display each step of its progress to understand without explaining.

## Source code

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Irregular NxN Sudoku Solver on dCode.fr [online website], retrieved on 2024-07-18, https://www.dcode.fr/irregular-sudoku-solver

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