Medium Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 3: Twenty-Five Medium (DiffLev 5) Sudoku-by5 Puzzles (numbers 1-25) 
 
-  Step-by-step instructions for solving  Puzzle 1, (156/369)   Diff: 5/9.9543
 -  Step-by-step instructions for solving  Puzzle 2, (168/369)   Diff: 5/9.9953
 -  Step-by-step instructions for solving  Puzzle 3, (179/369)   Diff: 5/9.9964
 -  Step-by-step instructions for solving  Puzzle 4, (180/369)   Diff: 5/9.9993
 -  Step-by-step instructions for solving  Puzzle 5, (181/369)   Diff: 5/9.9983
 -  Step-by-step instructions for solving  Puzzle 6, (185/369)   Diff: 5/9.9984
 -  Step-by-step instructions for solving  Puzzle 7, (188/369)   Diff: 5/9.9972
 -  Step-by-step instructions for solving  Puzzle 8, (188/369)   Diff: 5/9.9942
 -  Step-by-step instructions for solving  Puzzle 9, (190/369)   Diff: 5/9.9971
 -  Step-by-step instructions for solving  Puzzle 10, (192/369)   Diff: 5/9.9964
 -  Step-by-step instructions for solving  Puzzle 11, (194/369)   Diff: 5/9.9992
 -  Step-by-step instructions for solving  Puzzle 12, (194/369)   Diff: 5/9.9981
 -  Step-by-step instructions for solving  Puzzle 13, (196/369)   Diff: 5/9.9993
 -  Step-by-step instructions for solving  Puzzle 14, (201/369)   Diff: 5/9.9996
 -  Step-by-step instructions for solving  Puzzle 15, (201/369)   Diff: 5/9.9995
 -  Step-by-step instructions for solving  Puzzle 16, (202/369)   Diff: 5/9.9983
 -  Step-by-step instructions for solving  Puzzle 17, (203/369)   Diff: 5/9.9992
 -  Step-by-step instructions for solving  Puzzle 18, (203/369)   Diff: 5/9.9991
 -  Step-by-step instructions for solving  Puzzle 19, (206/369)   Diff: 5/9.9992
 -  Step-by-step instructions for solving  Puzzle 20, (207/369)   Diff: 5/9.9993
 -  Step-by-step instructions for solving  Puzzle 21, (211/369)   Diff: 5/9.9993
 -  Step-by-step instructions for solving  Puzzle 22, (211/369)   Diff: 5/9.9993
 -  Step-by-step instructions for solving  Puzzle 23, (214/369)   Diff: 5/9.9995
 -  Step-by-step instructions for solving  Puzzle 24, (216/369)   Diff: 5/9.9994
 -  Step-by-step instructions for solving  Puzzle 25, (217/369)   Diff: 5/9.9991