• Site
  • Resources
    • Puzzles
    • Monster Loops
    • Bob Hanson
  • HDP Sudoku Notation
    • Rows, Columns, Cells
    • Ranges
    • Possible Values
    • Reasoning
  • Sudoku Algorithms/Generators/Solvers
    • Block/Block Exclusion
    • Pair, Triple, .. Detection
    • Coloring
  • Design
  • Hard Puzzles
  • Perl version of solver
  • Classification
    • Single Sudoku Analysis
    • Sort
    • Statistics
  • World’s Hardest Sudoku
    • Introduction
    • Notation
    • Method
    • Hypothesis/Disproof/Proof Chain
    • Harder Than Your Husband …
    • HDP Chain Illustrations for World’s Hardest Sudoku
  • Satoku Matrix CSP Solver Statistics
    • Satoku Stats by CSP Level
    • Satoku Stats by HDP Level
  • Potential Hardest Sudokus
    • readme1910.txt
    • readme 1901 post.txt
    • readme 1512.txt
    • readme 1409.txt
  • General Index
• Page