Difficult Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 36: Two Difficult (DiffLev 10-14) Musicography Puzzles (numbers 151-152)
- Step-by-step instructions for solving Puzzle 151, (83/144) Diff: 10/99.8469.7794
- Step-by-step instructions for solving Puzzle 152, (95/144) Diff: 14/84.5567.7999.9443