Variations on Junior Sudoku Logic Puzzles (Vol 1) 
 Chapter 10: Twenty-Four Easy Sudoku-5 Puzzles (numbers 121-144) 
 
-  Step-by-step instructions for solving  Puzzle 121, (13/25)   Diff: 3/832
 -  Step-by-step instructions for solving  Puzzle 122, (13/25)   Diff: 3/751
 -  Step-by-step instructions for solving  Puzzle 123, (13/25)   Diff: 3/751
 -  Step-by-step instructions for solving  Puzzle 124, (14/25)   Diff: 3/662
 -  Step-by-step instructions for solving  Puzzle 125, (15/25)   Diff: 3/861
 -  Step-by-step instructions for solving  Puzzle 126, (15/25)   Diff: 3/456
 -  Step-by-step instructions for solving  Puzzle 127, (16/25)   Diff: 3/932
 -  Step-by-step instructions for solving  Puzzle 128, (16/25)   Diff: 3/664
 -  Step-by-step instructions for solving  Puzzle 129, (16/25)   Diff: 3/655
 -  Step-by-step instructions for solving  Puzzle 130, (17/25)   Diff: 3/953
 -  Step-by-step instructions for solving  Puzzle 131, (17/25)   Diff: 3/755
 -  Step-by-step instructions for solving  Puzzle 132, (17/25)   Diff: 3/692
 -  Step-by-step instructions for solving  Puzzle 133, (18/25)   Diff: 3/962
 -  Step-by-step instructions for solving  Puzzle 134, (16/25)   Diff: 4/4543
 -  Step-by-step instructions for solving  Puzzle 135, (17/25)   Diff: 4/6344
 -  Step-by-step instructions for solving  Puzzle 136, (17/25)   Diff: 4/5471
 -  Step-by-step instructions for solving  Puzzle 137, (18/25)   Diff: 4/5634
 -  Step-by-step instructions for solving  Puzzle 138, (18/25)   Diff: 4/5454
 -  Step-by-step instructions for solving  Puzzle 139, (18/25)   Diff: 4/4851
 -  Step-by-step instructions for solving  Puzzle 140, (18/25)   Diff: 4/3474
 -  Step-by-step instructions for solving  Puzzle 141, (19/25)   Diff: 4/8461
 -  Step-by-step instructions for solving  Puzzle 142, (19/25)   Diff: 4/7642
 -  Step-by-step instructions for solving  Puzzle 143, (19/25)   Diff: 4/6742
 -  Step-by-step instructions for solving  Puzzle 144, (20/25)   Diff: 4/5681