Variations on Advanced Sudoku Logic Puzzles (Vol 1) 
 Chapter 31: Two Tournament Sudoku-15 Puzzles (numbers 103-104) 
 
-  Step-by-step instructions for solving  Puzzle 103, (120/225)   Diff: 24/9967.3334.1112.1D48.6767.8742
 -  Step-by-step instructions for solving  Puzzle 104, (138/225)   Diff: 29/9.9344.4443.4536.6431.3554.3568.7355