Variations on Challenging Sudoku Logic Puzzles (Vol 1)

Chapter 4: Eight Challenging Sudoku-X Puzzles (numbers 9-16)

• Step-by-step instructions for solving Puzzle 9, (58/81)   Diff: 15/712.B214.4644.8544
• Step-by-step instructions for solving Puzzle 10, (59/81)   Diff: 16/4211.3347.3334.5664
• Step-by-step instructions for solving Puzzle 11, (60/81)   Diff: 18/53.31A2.1352.3247.6741
• Step-by-step instructions for solving Puzzle 12, (58/81)   Diff: 19/223.2B22.1211.5343.5666
• Step-by-step instructions for solving Puzzle 13, (60/81)   Diff: 19/555.3222.2344.4212.2741
• Step-by-step instructions for solving Puzzle 14, (60/81)   Diff: 20/4423.3225.321A.1234.3663
• Step-by-step instructions for solving Puzzle 15, (61/81)   Diff: 20/2111.22C2.1B21.3425.9791
• Step-by-step instructions for solving Puzzle 16, (62/81)   Diff: 20/2335.221A.2245.4211.1596