Medium Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 42: Two Medium (DiffLev 5-8) Productively Puzzles (numbers 163-164)
- Step-by-step instructions for solving Puzzle 163, (74/144) Diff: 5/9.9994
- Step-by-step instructions for solving Puzzle 164, (88/144) Diff: 8/9999.9962