Tournament Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 53: Two Tournament (DiffLev 23-26) Unperishably Puzzles (numbers 185-186) 
 
-  Step-by-step instructions for solving  Puzzle 185, (96/144)   Diff: 23/745.4333.11A3.4212.1456.9996
 -  Step-by-step instructions for solving  Puzzle 186, (91/144)   Diff: 26/98.3B31.1322.1211.1AA1.3353.7993