Easy Sudoku Five Logic Puzzles (Vol 1) 
 Chapter 8: Twenty-Four Easy (DiffLev 4) Sudoku-5B Puzzles (numbers 121-144) 
 
-  Step-by-step instructions for solving  Puzzle 121, (15/25)   Diff: 4/6441
 -  Step-by-step instructions for solving  Puzzle 122, (17/25)   Diff: 4/3563
 -  Step-by-step instructions for solving  Puzzle 123, (18/25)   Diff: 4/7461
 -  Step-by-step instructions for solving  Puzzle 124, (18/25)   Diff: 4/6561
 -  Step-by-step instructions for solving  Puzzle 125, (18/25)   Diff: 4/4833
 -  Step-by-step instructions for solving  Puzzle 126, (18/25)   Diff: 4/3753
 -  Step-by-step instructions for solving  Puzzle 127, (19/25)   Diff: 4/9532
 -  Step-by-step instructions for solving  Puzzle 128, (19/25)   Diff: 4/8551
 -  Step-by-step instructions for solving  Puzzle 129, (19/25)   Diff: 4/7651
 -  Step-by-step instructions for solving  Puzzle 130, (19/25)   Diff: 4/7363
 -  Step-by-step instructions for solving  Puzzle 131, (19/25)   Diff: 4/5662
 -  Step-by-step instructions for solving  Puzzle 132, (19/25)   Diff: 4/5581
 -  Step-by-step instructions for solving  Puzzle 133, (19/25)   Diff: 4/5554
 -  Step-by-step instructions for solving  Puzzle 134, (19/25)   Diff: 4/5455
 -  Step-by-step instructions for solving  Puzzle 135, (19/25)   Diff: 4/4762
 -  Step-by-step instructions for solving  Puzzle 136, (19/25)   Diff: 4/3871
 -  Step-by-step instructions for solving  Puzzle 137, (19/25)   Diff: 4/3682
 -  Step-by-step instructions for solving  Puzzle 138, (19/25)   Diff: 4/3592
 -  Step-by-step instructions for solving  Puzzle 139, (20/25)   Diff: 4/8543
 -  Step-by-step instructions for solving  Puzzle 140, (20/25)   Diff: 4/7841
 -  Step-by-step instructions for solving  Puzzle 141, (20/25)   Diff: 4/6653
 -  Step-by-step instructions for solving  Puzzle 142, (20/25)   Diff: 4/6653
 -  Step-by-step instructions for solving  Puzzle 143, (20/25)   Diff: 4/6644
 -  Step-by-step instructions for solving  Puzzle 144, (20/25)   Diff: 4/3575