Easy Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 33: Two Easy (DiffLev 4) Incomputable Puzzles (numbers 145-146)
- Step-by-step instructions for solving Puzzle 145, (62/144) Diff: 4/9981
- Step-by-step instructions for solving Puzzle 146, (70/144) Diff: 4/9991