Tournament Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 50: Two Tournament (DiffLev 26-29) Unformalized Puzzles (numbers 179-180) 
 
-  Step-by-step instructions for solving  Puzzle 179, (95/144)   Diff: 26/62.2111.1111.1C54.B264.5579.9842
 -  Step-by-step instructions for solving  Puzzle 180, (102/144)   Diff: 29/7.5336.2111.A144.331B.3212.5443.6994