Difficult Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 26: Two Difficult (DiffLev 13) Farsightedly Puzzles (numbers 131-132)
- Step-by-step instructions for solving Puzzle 131, (89/144) Diff: 13/9.9898.7356.7571
- Step-by-step instructions for solving Puzzle 132, (93/144) Diff: 13/8.8314.5999.9944