Challenging Sudoku Seven Logic Puzzles (Vol 1) 
 Chapter 9: Fourteen Challenging (DiffLev 13) Sudoku-7B-X Puzzles (numbers 83-96) 
 
-  Step-by-step instructions for solving  Puzzle 83, (36/49)   Diff: 13/3.2211.2214.7353
 -  Step-by-step instructions for solving  Puzzle 84, (37/49)   Diff: 13/2.2A11.1223.3892
 -  Step-by-step instructions for solving  Puzzle 85, (38/49)   Diff: 13/6.3111.31A3.5652
 -  Step-by-step instructions for solving  Puzzle 86, (38/49)   Diff: 13/3.31A4.2231.3843
 -  Step-by-step instructions for solving  Puzzle 87, (39/49)   Diff: 13/5.2A11.1221.2588
 -  Step-by-step instructions for solving  Puzzle 88, (39/49)   Diff: 13/4.321A.3313.5661
 -  Step-by-step instructions for solving  Puzzle 89, (39/49)   Diff: 13/2.3321.1252.6651
 -  Step-by-step instructions for solving  Puzzle 90, (39/49)   Diff: 13/1.AA21.1122.4994
 -  Step-by-step instructions for solving  Puzzle 91, (39/49)   Diff: 13/1.1234.5233.2256
 -  Step-by-step instructions for solving  Puzzle 92, (40/49)   Diff: 13/2.3321.2211.3686
 -  Step-by-step instructions for solving  Puzzle 93, (40/49)   Diff: 13/2.1223.1432.6455
 -  Step-by-step instructions for solving  Puzzle 94, (40/49)   Diff: 13/1.2532.3122.1486
 -  Step-by-step instructions for solving  Puzzle 95, (40/49)   Diff: 13/1.1A12.2115.9682
 -  Step-by-step instructions for solving  Puzzle 96, (40/49)   Diff: 13/1.11AA.A133.8982