Variations on Intermediate Sudoku Logic Puzzles (Vol 1)
Chapter 21: Eight Difficult Sudoku-7B-X Puzzles (numbers 105-112)
- Step-by-step instructions for solving Puzzle 105, (37/49) Diff: 9/6.3544.4551
- Step-by-step instructions for solving Puzzle 106, (39/49) Diff: 9/2.3446.4754
- Step-by-step instructions for solving Puzzle 107, (39/49) Diff: 10/31.1B38.9453
- Step-by-step instructions for solving Puzzle 108, (41/49) Diff: 10/22.4434.2686
- Step-by-step instructions for solving Puzzle 109, (38/49) Diff: 12/4321.2333.4454
- Step-by-step instructions for solving Puzzle 110, (40/49) Diff: 12/2211.3248.8522
- Step-by-step instructions for solving Puzzle 111, (40/49) Diff: 12/1131.A1A2.6796
- Step-by-step instructions for solving Puzzle 112, (41/49) Diff: 12/3212.3432.2478