Difficult Sudoku Eight Logic Puzzles (Vol 1) , Chapter 7

Difficult Sudoku Eight Logic Puzzles (Vol 1)

Step-by-step instructions for solving Puzzle 63, (40/64) Diff: 9/9.5222.4961
Step-by-step instructions for solving Puzzle 64, (42/64) Diff: 9/7.7763.4152
Step-by-step instructions for solving Puzzle 65, (43/64) Diff: 9/6.7854.2371
Step-by-step instructions for solving Puzzle 66, (43/64) Diff: 9/6.6221.5669
Step-by-step instructions for solving Puzzle 67, (44/64) Diff: 9/4.4445.4692
Step-by-step instructions for solving Puzzle 68, (45/64) Diff: 9/4.5655.6464
Step-by-step instructions for solving Puzzle 69, (46/64) Diff: 9/7.3576.5553
Step-by-step instructions for solving Puzzle 70, (46/64) Diff: 9/4.5876.5632
Step-by-step instructions for solving Puzzle 71, (40/64) Diff: 10/75.7423.2145
Step-by-step instructions for solving Puzzle 72, (43/64) Diff: 10/84.6233.6542
Step-by-step instructions for solving Puzzle 73, (43/64) Diff: 10/77.8531.2352
Step-by-step instructions for solving Puzzle 74, (45/64) Diff: 10/66.4363.4562
Step-by-step instructions for solving Puzzle 75, (46/64) Diff: 10/68.5114.4584
Step-by-step instructions for solving Puzzle 76, (47/64) Diff: 10/45.4543.5683
Step-by-step instructions for solving Puzzle 77, (47/64) Diff: 10/34.3666.4672
Step-by-step instructions for solving Puzzle 78, (48/64) Diff: 10/66.3235.8942