Medium Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 24: Two Medium (DiffLev 5) Discoverably Puzzles (numbers 127-128)
- Step-by-step instructions for solving Puzzle 127, (73/144) Diff: 5/9.9994
- Step-by-step instructions for solving Puzzle 128, (78/144) Diff: 5/9.9996