Medium Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 4: Twenty-Five Medium (DiffLev 6) Sudoku-by5 Puzzles (numbers 26-50) 
 
-  Step-by-step instructions for solving  Puzzle 26, (185/369)   Diff: 6/99.9995
 -  Step-by-step instructions for solving  Puzzle 27, (190/369)   Diff: 6/99.9961
 -  Step-by-step instructions for solving  Puzzle 28, (194/369)   Diff: 6/99.9932
 -  Step-by-step instructions for solving  Puzzle 29, (195/369)   Diff: 6/99.9972
 -  Step-by-step instructions for solving  Puzzle 30, (197/369)   Diff: 6/99.9995
 -  Step-by-step instructions for solving  Puzzle 31, (199/369)   Diff: 6/99.9943
 -  Step-by-step instructions for solving  Puzzle 32, (200/369)   Diff: 6/99.9952
 -  Step-by-step instructions for solving  Puzzle 33, (201/369)   Diff: 6/99.9985
 -  Step-by-step instructions for solving  Puzzle 34, (202/369)   Diff: 6/99.9941
 -  Step-by-step instructions for solving  Puzzle 35, (203/369)   Diff: 6/99.9962
 -  Step-by-step instructions for solving  Puzzle 36, (204/369)   Diff: 6/99.9993
 -  Step-by-step instructions for solving  Puzzle 37, (207/369)   Diff: 6/99.9932
 -  Step-by-step instructions for solving  Puzzle 38, (208/369)   Diff: 6/99.9992
 -  Step-by-step instructions for solving  Puzzle 39, (209/369)   Diff: 6/99.9994
 -  Step-by-step instructions for solving  Puzzle 40, (209/369)   Diff: 6/99.9994
 -  Step-by-step instructions for solving  Puzzle 41, (210/369)   Diff: 6/99.9992
 -  Step-by-step instructions for solving  Puzzle 42, (210/369)   Diff: 6/99.9944
 -  Step-by-step instructions for solving  Puzzle 43, (211/369)   Diff: 6/99.9996
 -  Step-by-step instructions for solving  Puzzle 44, (215/369)   Diff: 6/99.9963
 -  Step-by-step instructions for solving  Puzzle 45, (218/369)   Diff: 6/99.9992
 -  Step-by-step instructions for solving  Puzzle 46, (220/369)   Diff: 6/99.9992
 -  Step-by-step instructions for solving  Puzzle 47, (220/369)   Diff: 6/99.9991
 -  Step-by-step instructions for solving  Puzzle 48, (221/369)   Diff: 6/99.9994
 -  Step-by-step instructions for solving  Puzzle 49, (221/369)   Diff: 6/99.9991
 -  Step-by-step instructions for solving  Puzzle 50, (224/369)   Diff: 6/99.9993