Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 20: Two Challenging (DiffLev 18-20) Combustively Puzzles (numbers 119-120)
- Step-by-step instructions for solving Puzzle 119, (89/144) Diff: 18/94.2222.2464.3435.9992
- Step-by-step instructions for solving Puzzle 120, (93/144) Diff: 20/7522.3346.8643.5323.5778