Variations on Sudoku-by5 Logic Puzzles (Vol 1)

Chapter 5: Three Difficult Sudoku-by5 Puzzles (numbers 7-9)

• Step-by-step instructions for solving Puzzle 7, (239/369)   Diff: 9/9.9999.9994
• Step-by-step instructions for solving Puzzle 8, (231/369)   Diff: 10/99.9999.6575
• Step-by-step instructions for solving Puzzle 9, (249/369)   Diff: 12/9999.9999.9994