Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 32: Two Challenging (DiffLev 16-19) Imponderably Puzzles (numbers 143-144)
- Step-by-step instructions for solving Puzzle 143, (85/144) Diff: 16/9742.21B1.2464.9995
- Step-by-step instructions for solving Puzzle 144, (96/144) Diff: 19/554.3422.3566.5469.3596