Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 48: Two Challenging (DiffLev 16-20) Thunderclaps Puzzles (numbers 175-176)
- Step-by-step instructions for solving Puzzle 175, (90/144) Diff: 16/8959.5364.8894.2442
- Step-by-step instructions for solving Puzzle 176, (93/144) Diff: 20/8435.3353.2233.4473.6992