Difficult Sudoku Twelve Logic Puzzles (Vol 1)

Chapter 4: Twelve Difficult (DiffLev 12-14) Sudoku-12 Puzzles (numbers 13-24)

• Step-by-step instructions for solving Puzzle 13, (80/144)   Diff: 12/9642.3779.9952
• Step-by-step instructions for solving Puzzle 14, (85/144)   Diff: 12/9635.8999.3674
• Step-by-step instructions for solving Puzzle 15, (85/144)   Diff: 13/9.7555.7676.9962
• Step-by-step instructions for solving Puzzle 16, (86/144)   Diff: 13/9.6575.7975.6841
• Step-by-step instructions for solving Puzzle 17, (86/144)   Diff: 13/9.5524.5999.5682
• Step-by-step instructions for solving Puzzle 18, (87/144)   Diff: 13/9.9623.4889.8694
• Step-by-step instructions for solving Puzzle 19, (82/144)   Diff: 14/96.3342.4975.8992
• Step-by-step instructions for solving Puzzle 20, (85/144)   Diff: 14/99.8735.6235.5954
• Step-by-step instructions for solving Puzzle 21, (85/144)   Diff: 14/99.4567.8832.5462
• Step-by-step instructions for solving Puzzle 22, (85/144)   Diff: 14/96.4667.9974.6242
• Step-by-step instructions for solving Puzzle 23, (87/144)   Diff: 14/95.4567.5565.3679
• Step-by-step instructions for solving Puzzle 24, (90/144)   Diff: 14/99.8545.5335.8695