Variations on Advanced Sudoku Logic Puzzles (Vol 1)

Chapter 6: Four Challenging Sudoku-12 Puzzles (numbers 13-16)

• Step-by-step instructions for solving Puzzle 13, (88/144)   Diff: 15/865.8664.4534.6986
• Step-by-step instructions for solving Puzzle 14, (89/144)   Diff: 18/94.8533.3211.4279.5783
• Step-by-step instructions for solving Puzzle 15, (92/144)   Diff: 19/981.11C5.8675.4764.4243
• Step-by-step instructions for solving Puzzle 16, (93/144)   Diff: 19/956.3422.3331.1349.8993