Variations on Advanced Sudoku Logic Puzzles (Vol 1) 
 Chapter 32: Two TournamentPlus Sudoku-15 Puzzles (numbers 105-106) 
 
-  Step-by-step instructions for solving  Puzzle 105, (130/225)   Diff: 36/9343.5421.1111.3352.6412.2111.2423.4357+
 -  Step-by-step instructions for solving  Puzzle 106, (138/225)   Diff: 37/5.4322.1D34.111C.2576.4692.2397.55A1.2324+