Challenging Sudoku Twelve Logic Puzzles (Vol 1)
Chapter 45: Two Challenging (DiffLev 19-20) Stenographic Puzzles (numbers 169-170)
- Step-by-step instructions for solving Puzzle 169, (94/144) Diff: 19/754.531A.3211.3869.8986
- Step-by-step instructions for solving Puzzle 170, (94/144) Diff: 20/4312.2222.2223.2445.9999