Difficult Sudoku-by5 Logic Puzzles (Vol 1)
Chapter 7: Sixteen Difficult (DiffLev 13) Sudoku-by5 Puzzles (numbers 65-80)
- Step-by-step instructions for solving Puzzle 65, (235/369) Diff: 13/9.9999.9997.3556
- Step-by-step instructions for solving Puzzle 66, (235/369) Diff: 13/9.9999.9932.3554
- Step-by-step instructions for solving Puzzle 67, (241/369) Diff: 13/9.9999.9999.9761
- Step-by-step instructions for solving Puzzle 68, (242/369) Diff: 13/9.9999.9997.4454
- Step-by-step instructions for solving Puzzle 69, (242/369) Diff: 13/9.9999.9647.9997
- Step-by-step instructions for solving Puzzle 70, (243/369) Diff: 13/9.9999.9999.9893
- Step-by-step instructions for solving Puzzle 71, (245/369) Diff: 13/9.9999.9999.9862
- Step-by-step instructions for solving Puzzle 72, (245/369) Diff: 13/9.9999.9953.4341
- Step-by-step instructions for solving Puzzle 73, (248/369) Diff: 13/9.9999.9999.9784
- Step-by-step instructions for solving Puzzle 74, (251/369) Diff: 13/9.9999.9999.9994
- Step-by-step instructions for solving Puzzle 75, (251/369) Diff: 13/9.9999.9999.9992
- Step-by-step instructions for solving Puzzle 76, (255/369) Diff: 13/9.9999.9999.9444
- Step-by-step instructions for solving Puzzle 77, (258/369) Diff: 13/9.9999.9999.9991
- Step-by-step instructions for solving Puzzle 78, (262/369) Diff: 13/9.9999.9999.9963
- Step-by-step instructions for solving Puzzle 79, (263/369) Diff: 13/9.9999.9999.9941
- Step-by-step instructions for solving Puzzle 80, (268/369) Diff: 13/9.9999.9999.9994