Variations on Challenging Sudoku-by5 Logic Puzzles (Vol 1)

Chapter 4: Eight Challenging Sudoku-Xtreme Puzzles (numbers 9-16)

• Step-by-step instructions for solving Puzzle 9, (257/369)   Diff: 17/9.9999.9999.2B35.9733
• Step-by-step instructions for solving Puzzle 10, (262/369)   Diff: 19/999.9999.9469.7999.9992
• Step-by-step instructions for solving Puzzle 11, (266/369)   Diff: 19/999.9999.9943.2B34.5993
• Step-by-step instructions for solving Puzzle 12, (267/369)   Diff: 19/999.9999.9994.2243.5932
• Step-by-step instructions for solving Puzzle 13, (272/369)   Diff: 19/999.9999.9999.9644.7532
• Step-by-step instructions for solving Puzzle 14, (283/369)   Diff: 19/999.7889.9999.9999.9993
• Step-by-step instructions for solving Puzzle 15, (285/369)   Diff: 19/999.9667.9999.9999.9991
• Step-by-step instructions for solving Puzzle 16, (283/369)   Diff: 20/9995.4999.9999.9999.9993