Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 23: Two Challenging (DiffLev 15-19) Demonstrably Puzzles (numbers 125-126)
- Step-by-step instructions for solving Puzzle 125, (80/144) Diff: 15/985.4232.1456.9654
- Step-by-step instructions for solving Puzzle 126, (94/144) Diff: 19/944.6754.4233.6783.6832