Variations on Sudoku-by5 Logic Puzzles (Vol 1)

Chapter 12: Three Difficult Sudoku-Xtreme Puzzles (numbers 28-30)

• Step-by-step instructions for solving Puzzle 28, (243/369)   Diff: 9/9.9999.6642
• Step-by-step instructions for solving Puzzle 29, (242/369)   Diff: 11/999.9993.3893
• Step-by-step instructions for solving Puzzle 30, (267/369)   Diff: 12/9999.9999.9992