Tournament Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 48: Two Tournament (DiffLev 28) Thunderclaps Puzzles (numbers 175-176) 
 
-  Step-by-step instructions for solving  Puzzle 175, (96/144)   Diff: 28/7321.1331.2331.2124.6753.5545.3554
 -  Step-by-step instructions for solving  Puzzle 176, (100/144)   Diff: 28/74B2.4722.211A.B11C.4433.4964.5663