Tournament Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 25: Two Tournament (DiffLev 21-23) Exhaustingly Puzzles (numbers 129-130) 
 
-  Step-by-step instructions for solving  Puzzle 129, (90/144)   Diff: 21/6.543A.1A22.1111.3759.9993
 -  Step-by-step instructions for solving  Puzzle 130, (97/144)   Diff: 23/883.1121.21B1.1221.3458.9799