https://github.com/richhaar/dancing-links-sudoku

Sudoku solver using Donald Knuth's AlgorithmX with dancing links. Written in C++, solving sudokus in sub 1ms.
https://github.com/richhaar/dancing-links-sudoku

algorithmx cpp dancing-links sudoku sudoku-solver

Last synced: 2 months ago
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Sudoku solver using Donald Knuth's AlgorithmX with dancing links. Written in C++, solving sudokus in sub 1ms.

• Host: GitHub
• URL: https://github.com/richhaar/dancing-links-sudoku
• Owner: richhaar
• License: mit
• Created: 2022-02-19T20:31:53.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2022-02-21T10:41:38.000Z (about 3 years ago)
• Last Synced: 2025-01-11T16:39:11.192Z (4 months ago)
• Topics: algorithmx, cpp, dancing-links, sudoku, sudoku-solver
• Language: C++
• Homepage:
• Size: 228 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Sudoku

Sudoku solver written using Donald Knuth's AlgorithmX with dancing links, see [paper](https://arxiv.org/pdf/cs/0011047.pdf).

Capable of sub 1ms solutions.

![Solving NYTimes Hard puzzle](https://raw.githubusercontent.com/richhaar/DancingLinksSudoku/main/img/sudoku.png)

### Planned improvements

* Add GUI, possibly through WIN32 API

### Acknowledgements

* [Dancing links paper](https://garethrees.org/2007/06/10/zendoku-generation/) by Zendoku

* Donald Knuth for the original paper on AlgorithmX

* Robert Hanson for an [ASCII representation of the exact cover matrix](https://www.stolaf.edu/people/hansonr/sudoku/exactcovermatrix.htm)