Variations on Advanced Sudoku Logic Puzzles (Vol 1)

Chapter 42: Four Challenging HyperSudoku-15 Puzzles (numbers 139-142)

• Step-by-step instructions for solving Puzzle 139, (136/225)   Diff: 16/9946.5668.9789.9985
• Step-by-step instructions for solving Puzzle 140, (136/225)   Diff: 16/9452.3413.7999.9995
• Step-by-step instructions for solving Puzzle 141, (134/225)   Diff: 20/9842.11C4.6889.9999.8842
• Step-by-step instructions for solving Puzzle 142, (136/225)   Diff: 20/9982.1111.1D78.8799.9873