Challenging Sudoku Twelve Logic Puzzles (Vol 1)

Chapter 4: Twelve Challenging (DiffLev 18-20) Sudoku-12 Puzzles (numbers 13-24)

• Step-by-step instructions for solving Puzzle 13, (83/144)   Diff: 18/97.4566.5224.3232.5943
• Step-by-step instructions for solving Puzzle 14, (91/144)   Diff: 18/79.7532.3333.3324.9996
• Step-by-step instructions for solving Puzzle 15, (84/144)   Diff: 19/955.4366.41A1.1243.8882
• Step-by-step instructions for solving Puzzle 16, (85/144)   Diff: 19/975.3221.A236.6759.4371
• Step-by-step instructions for solving Puzzle 17, (85/144)   Diff: 19/874.31B2.2331.2359.9972
• Step-by-step instructions for solving Puzzle 18, (90/144)   Diff: 19/975.5533.5584.1B22.4853
• Step-by-step instructions for solving Puzzle 19, (91/144)   Diff: 19/852.2355.2235.6689.7442
• Step-by-step instructions for solving Puzzle 20, (97/144)   Diff: 19/423.4342.2472.5658.9986
• Step-by-step instructions for solving Puzzle 21, (90/144)   Diff: 20/931C.3C34.7542.4359.9643
• Step-by-step instructions for solving Puzzle 22, (92/144)   Diff: 20/7544.5733.4867.6423.4532
• Step-by-step instructions for solving Puzzle 23, (93/144)   Diff: 20/8342.4468.9945.3224.5443
• Step-by-step instructions for solving Puzzle 24, (94/144)   Diff: 20/8535.7653.4244.5534.5682