Variations on Junior Sudoku Logic Puzzles (Vol 1) 
 Chapter 6: Sixteen Easy Sudoku-4-OC Puzzles (numbers 49-64) 
 
-  Step-by-step instructions for solving  Puzzle 49, (10/16)   Diff: 3/451
 -  Step-by-step instructions for solving  Puzzle 50, (10/16)   Diff: 3/451
 -  Step-by-step instructions for solving  Puzzle 51, (11/16)   Diff: 3/551
 -  Step-by-step instructions for solving  Puzzle 52, (11/16)   Diff: 3/551
 -  Step-by-step instructions for solving  Puzzle 53, (11/16)   Diff: 3/443
 -  Step-by-step instructions for solving  Puzzle 54, (12/16)   Diff: 3/651
 -  Step-by-step instructions for solving  Puzzle 55, (12/16)   Diff: 3/651
 -  Step-by-step instructions for solving  Puzzle 56, (12/16)   Diff: 3/651
 -  Step-by-step instructions for solving  Puzzle 57, (12/16)   Diff: 3/561
 -  Step-by-step instructions for solving  Puzzle 58, (12/16)   Diff: 3/543
 -  Step-by-step instructions for solving  Puzzle 59, (11/16)   Diff: 4/2342
 -  Step-by-step instructions for solving  Puzzle 60, (11/16)   Diff: 4/2342
 -  Step-by-step instructions for solving  Puzzle 61, (12/16)   Diff: 4/4431
 -  Step-by-step instructions for solving  Puzzle 62, (12/16)   Diff: 4/4431
 -  Step-by-step instructions for solving  Puzzle 63, (12/16)   Diff: 4/4431
 -  Step-by-step instructions for solving  Puzzle 64, (12/16)   Diff: 4/4431