Medium Sudoku Seven Logic Puzzles (Vol 1) 
 Chapter 8: Twelve Medium (DiffLev 7-8) Sudoku-7B-2V Puzzles (numbers 71-82) 
 
-  Step-by-step instructions for solving  Puzzle 71, (36/49)   Diff: 7/574.6662
 -  Step-by-step instructions for solving  Puzzle 72, (37/49)   Diff: 7/894.4633
 -  Step-by-step instructions for solving  Puzzle 73, (34/49)   Diff: 8/6353.3482
 -  Step-by-step instructions for solving  Puzzle 74, (36/49)   Diff: 8/6544.7433
 -  Step-by-step instructions for solving  Puzzle 75, (36/49)   Diff: 8/5544.7443
 -  Step-by-step instructions for solving  Puzzle 76, (37/49)   Diff: 8/4357.6462
 -  Step-by-step instructions for solving  Puzzle 77, (38/49)   Diff: 8/5485.6442
 -  Step-by-step instructions for solving  Puzzle 78, (38/49)   Diff: 8/2345.4884
 -  Step-by-step instructions for solving  Puzzle 79, (39/49)   Diff: 8/5246.7762
 -  Step-by-step instructions for solving  Puzzle 80, (39/49)   Diff: 8/3355.4487
 -  Step-by-step instructions for solving  Puzzle 81, (40/49)   Diff: 8/5756.3392
 -  Step-by-step instructions for solving  Puzzle 82, (40/49)   Diff: 8/4467.5464