Medium Sudoku Five Logic Puzzles (Vol 1) 
 Chapter 8: Twelve Medium (DiffLev 6) Sudoku-5-Spot Puzzles (numbers 61-72) 
 
-  Step-by-step instructions for solving  Puzzle 61, (18/25)   Diff: 6/52.2441
 -  Step-by-step instructions for solving  Puzzle 62, (20/25)   Diff: 6/43.3541
 -  Step-by-step instructions for solving  Puzzle 63, (20/25)   Diff: 6/43.3352
 -  Step-by-step instructions for solving  Puzzle 64, (20/25)   Diff: 6/32.3363
 -  Step-by-step instructions for solving  Puzzle 65, (20/25)   Diff: 6/24.4352
 -  Step-by-step instructions for solving  Puzzle 66, (20/25)   Diff: 6/24.3452
 -  Step-by-step instructions for solving  Puzzle 67, (20/25)   Diff: 6/23.3453
 -  Step-by-step instructions for solving  Puzzle 68, (20/25)   Diff: 6/22.4453
 -  Step-by-step instructions for solving  Puzzle 69, (20/25)   Diff: 6/13.3553
 -  Step-by-step instructions for solving  Puzzle 70, (20/25)   Diff: 6/13.2455
 -  Step-by-step instructions for solving  Puzzle 71, (21/25)   Diff: 6/43.4361
 -  Step-by-step instructions for solving  Puzzle 72, (21/25)   Diff: 6/24.4632