Difficult Sudoku Seven Logic Puzzles (Vol 1)

Chapter 4: Fourteen Difficult (DiffLev 11-12) Sudoku-7 Puzzles (numbers 15-28)

• Step-by-step instructions for solving Puzzle 15, (37/49)   Diff: 11/734.4322.4341
• Step-by-step instructions for solving Puzzle 16, (39/49)   Diff: 11/234.3323.4771
• Step-by-step instructions for solving Puzzle 17, (40/49)   Diff: 11/445.3243.4641
• Step-by-step instructions for solving Puzzle 18, (35/49)   Diff: 12/4211.1212.4782
• Step-by-step instructions for solving Puzzle 19, (35/49)   Diff: 12/3361.1113.4642
• Step-by-step instructions for solving Puzzle 20, (35/49)   Diff: 12/1123.1113.7753
• Step-by-step instructions for solving Puzzle 21, (36/49)   Diff: 12/3542.2312.3461
• Step-by-step instructions for solving Puzzle 22, (37/49)   Diff: 12/3231.1137.6343
• Step-by-step instructions for solving Puzzle 23, (38/49)   Diff: 12/3212.3123.6852
• Step-by-step instructions for solving Puzzle 24, (39/49)   Diff: 12/5222.1212.6853
• Step-by-step instructions for solving Puzzle 25, (39/49)   Diff: 12/4321.1344.4391
• Step-by-step instructions for solving Puzzle 26, (39/49)   Diff: 12/3452.2422.1374
• Step-by-step instructions for solving Puzzle 27, (39/49)   Diff: 12/2221.2442.4565
• Step-by-step instructions for solving Puzzle 28, (39/49)   Diff: 12/1112.1334.4766