Difficult Sudoku Twelve Logic Puzzles (Vol 1)

Chapter 3: Twelve Difficult (DiffLev 10-11) Sudoku-12 Puzzles (numbers 1-12)

• Step-by-step instructions for solving Puzzle 1, (76/144)   Diff: 10/98.7985.4342
• Step-by-step instructions for solving Puzzle 2, (82/144)   Diff: 10/99.7687.8445
• Step-by-step instructions for solving Puzzle 3, (84/144)   Diff: 10/99.6757.9855
• Step-by-step instructions for solving Puzzle 4, (84/144)   Diff: 10/97.9999.5364
• Step-by-step instructions for solving Puzzle 5, (84/144)   Diff: 10/97.7889.9954
• Step-by-step instructions for solving Puzzle 6, (81/144)   Diff: 11/999.9965.2434
• Step-by-step instructions for solving Puzzle 7, (81/144)   Diff: 11/996.7268.9974
• Step-by-step instructions for solving Puzzle 8, (82/144)   Diff: 11/922.3999.9962
• Step-by-step instructions for solving Puzzle 9, (87/144)   Diff: 11/974.4769.9896
• Step-by-step instructions for solving Puzzle 10, (88/144)   Diff: 11/997.5744.8995
• Step-by-step instructions for solving Puzzle 11, (91/144)   Diff: 11/967.9987.9975
• Step-by-step instructions for solving Puzzle 12, (93/144)   Diff: 11/996.6999.9993