Difficult Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 35: Two Difficult (DiffLev 10-14) Multipronged Puzzles (numbers 149-150)
- Step-by-step instructions for solving Puzzle 149, (90/144) Diff: 10/95.5889.9992
- Step-by-step instructions for solving Puzzle 150, (100/144) Diff: 14/99.9895.7536.9951