Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 15: Two Challenging (DiffLev 15-17) tpsmith-serious Puzzles (numbers 109-110)
- Step-by-step instructions for solving Puzzle 109, (101/144) Diff: 15/857.8979.8654.3489
- Step-by-step instructions for solving Puzzle 110, (93/144) Diff: 17/9.6546.4543.4545.9653