Medium Sudoku Five Logic Puzzles (Vol 1) 
 Chapter 7: Twelve Medium (DiffLev 5) Sudoku-5-Spot Puzzles (numbers 49-60) 
 
-  Step-by-step instructions for solving  Puzzle 49, (18/25)   Diff: 5/4.5333
 -  Step-by-step instructions for solving  Puzzle 50, (19/25)   Diff: 5/5.5441
 -  Step-by-step instructions for solving  Puzzle 51, (19/25)   Diff: 5/5.4451
 -  Step-by-step instructions for solving  Puzzle 52, (20/25)   Diff: 5/4.4633
 -  Step-by-step instructions for solving  Puzzle 53, (20/25)   Diff: 5/4.4462
 -  Step-by-step instructions for solving  Puzzle 54, (20/25)   Diff: 5/4.4462
 -  Step-by-step instructions for solving  Puzzle 55, (20/25)   Diff: 5/3.6461
 -  Step-by-step instructions for solving  Puzzle 56, (20/25)   Diff: 5/3.4553
 -  Step-by-step instructions for solving  Puzzle 57, (20/25)   Diff: 5/2.5733
 -  Step-by-step instructions for solving  Puzzle 58, (21/25)   Diff: 5/3.3555
 -  Step-by-step instructions for solving  Puzzle 59, (21/25)   Diff: 5/3.2583
 -  Step-by-step instructions for solving  Puzzle 60, (21/25)   Diff: 5/2.5563