Variations on Advanced Sudoku Logic Puzzles (Vol 1)
Chapter 27: Four Easy Sudoku-15 Puzzles (numbers 87-90)
- Step-by-step instructions for solving Puzzle 87, (80/225) Diff: 4/9962
- Step-by-step instructions for solving Puzzle 88, (89/225) Diff: 4/9994
- Step-by-step instructions for solving Puzzle 89, (89/225) Diff: 4/9971
- Step-by-step instructions for solving Puzzle 90, (90/225) Diff: 4/9942