Medium Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 13: Six Medium (DiffLev 5-6) tpsmith-surprised Puzzles (numbers 97-102) 
 
-  Step-by-step instructions for solving  Puzzle 97, (69/144)   Diff: 5/9.9992
 -  Step-by-step instructions for solving  Puzzle 98, (71/144)   Diff: 5/9.9952
 -  Step-by-step instructions for solving  Puzzle 99, (73/144)   Diff: 5/9.9994
 -  Step-by-step instructions for solving  Puzzle 100, (78/144)   Diff: 5/9.9972
 -  Step-by-step instructions for solving  Puzzle 101, (74/144)   Diff: 6/99.9942
 -  Step-by-step instructions for solving  Puzzle 102, (78/144)   Diff: 6/99.9862