Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 38: Two Challenging (DiffLev 18-20) Outsparkling Puzzles (numbers 155-156)
- Step-by-step instructions for solving Puzzle 155, (96/144) Diff: 18/33.2211.3588.9998.5664
- Step-by-step instructions for solving Puzzle 156, (92/144) Diff: 20/8543.1A12.1346.5486.8895