Difficult Sudoku-by5 Logic Puzzles (Vol 1)

Chapter 3: Sixteen Difficult (DiffLev 9) Sudoku-by5 Puzzles (numbers 1-16)

• Step-by-step instructions for solving Puzzle 1, (212/369)   Diff: 9/9.9999.8993
• Step-by-step instructions for solving Puzzle 2, (212/369)   Diff: 9/9.9998.4545
• Step-by-step instructions for solving Puzzle 3, (218/369)   Diff: 9/9.9999.9934
• Step-by-step instructions for solving Puzzle 4, (227/369)   Diff: 9/9.9999.9532
• Step-by-step instructions for solving Puzzle 5, (228/369)   Diff: 9/9.9999.5532
• Step-by-step instructions for solving Puzzle 6, (229/369)   Diff: 9/9.9999.9992
• Step-by-step instructions for solving Puzzle 7, (231/369)   Diff: 9/9.9999.7862
• Step-by-step instructions for solving Puzzle 8, (232/369)   Diff: 9/9.9999.9992
• Step-by-step instructions for solving Puzzle 9, (233/369)   Diff: 9/9.9999.9994
• Step-by-step instructions for solving Puzzle 10, (233/369)   Diff: 9/9.9999.9985
• Step-by-step instructions for solving Puzzle 11, (234/369)   Diff: 9/9.9999.9763
• Step-by-step instructions for solving Puzzle 12, (235/369)   Diff: 9/9.9999.9982
• Step-by-step instructions for solving Puzzle 13, (240/369)   Diff: 9/9.9999.9992
• Step-by-step instructions for solving Puzzle 14, (241/369)   Diff: 9/9.9999.9993
• Step-by-step instructions for solving Puzzle 15, (241/369)   Diff: 9/9.9999.9963
• Step-by-step instructions for solving Puzzle 16, (251/369)   Diff: 9/9.9999.9993