Tournament Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 45: Two Tournament (DiffLev 22-29) Stenographic Puzzles (numbers 169-170) 
 
-  Step-by-step instructions for solving  Puzzle 169, (90/144)   Diff: 22/93.2276.8453.2132.3474.3543
 -  Step-by-step instructions for solving  Puzzle 170, (99/144)   Diff: 29/5.3311.B122.4546.4534.2232.1D44.6682