Medium Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 25: Two Medium (DiffLev 7-8) Exhaustingly Puzzles (numbers 129-130)
- Step-by-step instructions for solving Puzzle 129, (80/144) Diff: 7/999.9942
- Step-by-step instructions for solving Puzzle 130, (77/144) Diff: 8/9899.9994