Medium Sudoku Seven Logic Puzzles (Vol 1) 
 Chapter 14: Twelve Medium (DiffLev 7-8) Sudoku-7C-2V Puzzles (numbers 151-162) 
 
-  Step-by-step instructions for solving  Puzzle 151, (36/49)   Diff: 7/774.4761
 -  Step-by-step instructions for solving  Puzzle 152, (38/49)   Diff: 7/767.4464
 -  Step-by-step instructions for solving  Puzzle 153, (39/49)   Diff: 7/495.6653
 -  Step-by-step instructions for solving  Puzzle 154, (40/49)   Diff: 7/468.5881
 -  Step-by-step instructions for solving  Puzzle 155, (40/49)   Diff: 7/344.6894
 -  Step-by-step instructions for solving  Puzzle 156, (38/49)   Diff: 8/6314.8952
 -  Step-by-step instructions for solving  Puzzle 157, (38/49)   Diff: 8/2643.3398
 -  Step-by-step instructions for solving  Puzzle 158, (38/49)   Diff: 8/2125.3795
 -  Step-by-step instructions for solving  Puzzle 159, (39/49)   Diff: 8/3387.4563
 -  Step-by-step instructions for solving  Puzzle 160, (39/49)   Diff: 8/3337.3677
 -  Step-by-step instructions for solving  Puzzle 161, (40/49)   Diff: 8/4433.5794
 -  Step-by-step instructions for solving  Puzzle 162, (40/49)   Diff: 8/3334.7767