Difficult Sudoku Eight Logic Puzzles (Vol 1)
Chapter 3: Fourteen Difficult (DiffLev 9-10) Sudoku-8 Puzzles (numbers 1-14)
- Step-by-step instructions for solving Puzzle 1, (40/64) Diff: 9/6.3213.7972
- Step-by-step instructions for solving Puzzle 2, (42/64) Diff: 9/6.9444.4361
- Step-by-step instructions for solving Puzzle 3, (42/64) Diff: 9/5.4544.5753
- Step-by-step instructions for solving Puzzle 4, (44/64) Diff: 9/7.4433.3686
- Step-by-step instructions for solving Puzzle 5, (44/64) Diff: 9/7.3462.3964
- Step-by-step instructions for solving Puzzle 6, (45/64) Diff: 9/5.5745.6544
- Step-by-step instructions for solving Puzzle 7, (40/64) Diff: 10/42.4423.6762
- Step-by-step instructions for solving Puzzle 8, (42/64) Diff: 10/74.2454.3247
- Step-by-step instructions for solving Puzzle 9, (43/64) Diff: 10/64.5564.5341
- Step-by-step instructions for solving Puzzle 10, (43/64) Diff: 10/62.41A3.7685
- Step-by-step instructions for solving Puzzle 11, (43/64) Diff: 10/44.3365.3672
- Step-by-step instructions for solving Puzzle 12, (43/64) Diff: 10/42.4673.3455
- Step-by-step instructions for solving Puzzle 13, (44/64) Diff: 10/33.1336.7774
- Step-by-step instructions for solving Puzzle 14, (45/64) Diff: 10/76.4145.6543