Difficult Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 39: Two Difficult (DiffLev 14) Overmatching Puzzles (numbers 157-158)
- Step-by-step instructions for solving Puzzle 157, (98/144) Diff: 14/97.6558.7976.8864
- Step-by-step instructions for solving Puzzle 158, (98/144) Diff: 14/76.6553.3789.9982