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Strategies for Number Puzzles of all kinds
Page Index
Basic Strategies
Tough Strategies
Diabolical Strategies
Extreme Strategies
Deprecated Strategies
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  • Introducing Chains and Links

    Chaining Strategies are fundamental to solving tougher strategies and here I introduce chains and how to build them

  • Escargot

    The original 'world's toughest Sudoku' and a short explanation of why this solver still can't solve the puzzle

  • The Arto Inkala Sudoku

    Possibly the latest 'untimate puzzle', created by Arto Inkala. This sparked some ideas about measuring the extremely difficult puzzles.

  • The Relative Incidence of Sudoku Strategies

    Some raw data on how often each strategies is used

  • The 17 Clue 'Proof' - my take on the January 2012 computerised exhaustive search proof that there can be no 16-clue Sudoku puzzle.

  • Generalizing Sudoku Strategies

    I introduce a paper by Kevin Gromley, talking about a set thoery approach to Sudoku Strategies. March 2014

  • Crooks Algorithm

    My response to Crooks Algoritm pointing out that is doesn't explain anything at all.


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Article created on 17-July-2014. Views:
This page was last modified on 17-July-2014.
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Copyright Andrew Stuart @ Syndicated Puzzles Inc, 2014