Medium Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 11: Six Medium (DiffLev 5-6) tpsmith-silly Puzzles (numbers 85-90) 
 
-  Step-by-step instructions for solving  Puzzle 85, (68/144)   Diff: 5/9.9633
 -  Step-by-step instructions for solving  Puzzle 86, (75/144)   Diff: 5/9.9974
 -  Step-by-step instructions for solving  Puzzle 87, (62/144)   Diff: 6/99.5133
 -  Step-by-step instructions for solving  Puzzle 88, (76/144)   Diff: 6/99.9951
 -  Step-by-step instructions for solving  Puzzle 89, (82/144)   Diff: 6/99.9972
 -  Step-by-step instructions for solving  Puzzle 90, (85/144)   Diff: 6/99.9974