• Site
  • 1. Resources
    • 1.1. Puzzles
    • 1.2. Monster Loops
    • 1.3. Bob Hanson
  • 2. HDP Sudoku Notation
    • 2.1. Rows, Columns, Cells
    • 2.2. Ranges
    • 2.3. Possible Values
    • 2.4. Reasoning
  • 3. Sudoku Algorithms/Generators/Solvers
    • 3.1. Block/Block Exclusion
    • 3.2. Pair, Triple, .. Detection
    • 3.3. Coloring
  • 4. Design
  • 5. Hard Puzzles
  • 6. Perl version of solver
  • 7. Classification
    • 7.1. Single Sudoku Analysis
    • 7.2. Sort
    • 7.3. Statistics
  • 8. World’s Hardest Sudoku
    • 8.1. Introduction
    • 8.2. Notation
    • 8.3. Method
    • 8.4. Hypothesis/Disproof/Proof Chain
    • 8.5. Harder Than Your Husband …
    • 8.6. HDP Chain Illustrations for World’s Hardest Sudoku
  • 9. Satoku Matrix CSP Solver Statistics
    • 9.1. Satoku Stats by CSP Level
    • 9.2. Satoku Stats by HDP Level
  • 10. Potential Hardest Sudokus
    • 10.1. readme1910.txt
    • 10.2. readme 1901 post.txt
    • 10.3. readme 1512.txt
    • 10.4. readme 1409.txt
  • General Index
• Page