Difficult Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 41: Two Difficult (DiffLev 10-12) Persuadingly Puzzles (numbers 161-162)
- Step-by-step instructions for solving Puzzle 161, (85/144) Diff: 10/97.9699.9664
- Step-by-step instructions for solving Puzzle 162, (91/144) Diff: 12/9745.9688.9994