Challenging Sudoku Seven Logic Puzzles (Vol 1) 
 Chapter 8: Twelve Challenging (DiffLev 14) Sudoku-7B-2V Puzzles (numbers 71-82) 
 
-  Step-by-step instructions for solving  Puzzle 71, (37/49)   Diff: 14/31.2213.5323.3333
 -  Step-by-step instructions for solving  Puzzle 72, (38/49)   Diff: 14/51.2121.1342.2581
 -  Step-by-step instructions for solving  Puzzle 73, (39/49)   Diff: 14/42.A112.3124.4563
 -  Step-by-step instructions for solving  Puzzle 74, (39/49)   Diff: 14/33.3223.2225.4233
 -  Step-by-step instructions for solving  Puzzle 75, (39/49)   Diff: 14/33.3122.1212.4564
 -  Step-by-step instructions for solving  Puzzle 76, (39/49)   Diff: 14/32.1121.1125.4565
 -  Step-by-step instructions for solving  Puzzle 77, (39/49)   Diff: 14/23.A112.3523.5551
 -  Step-by-step instructions for solving  Puzzle 78, (39/49)   Diff: 14/11.AA32.1234.3591
 -  Step-by-step instructions for solving  Puzzle 79, (40/49)   Diff: 14/53.4331.1223.5242
 -  Step-by-step instructions for solving  Puzzle 80, (40/49)   Diff: 14/52.4421.3231.1363
 -  Step-by-step instructions for solving  Puzzle 81, (40/49)   Diff: 14/33.2341.1222.4742
 -  Step-by-step instructions for solving  Puzzle 82, (41/49)   Diff: 14/34.2211.2232.3664