Variations on Advanced Sudoku Logic Puzzles (Vol 1)

Chapter 41: Four Difficult HyperSudoku-15 Puzzles (numbers 135-138)

• Step-by-step instructions for solving Puzzle 135, (125/225)   Diff: 11/997.9999.9872
• Step-by-step instructions for solving Puzzle 136, (130/225)   Diff: 14/99.6323.4599.9996
• Step-by-step instructions for solving Puzzle 137, (134/225)   Diff: 14/99.6899.9799.8995
• Step-by-step instructions for solving Puzzle 138, (138/225)   Diff: 14/99.9985.9995.8687