Medium Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 48: Two Medium (DiffLev 7) Thunderclaps Puzzles (numbers 175-176)
- Step-by-step instructions for solving Puzzle 175, (75/144) Diff: 7/999.9532
- Step-by-step instructions for solving Puzzle 176, (77/144) Diff: 7/999.9632