Challenging Sudoku Seven Logic Puzzles (Vol 1) 
 Chapter 5: Fourteen Challenging (DiffLev 13) Sudoku-7B Puzzles (numbers 29-42) 
 
-  Step-by-step instructions for solving  Puzzle 29, (35/49)   Diff: 13/6.1111.1142.3266
 -  Step-by-step instructions for solving  Puzzle 30, (35/49)   Diff: 13/4.4231.1211.2653
 -  Step-by-step instructions for solving  Puzzle 31, (35/49)   Diff: 13/1.2221.1355.2443
 -  Step-by-step instructions for solving  Puzzle 32, (36/49)   Diff: 13/5.3222.2134.2442
 -  Step-by-step instructions for solving  Puzzle 33, (36/49)   Diff: 13/4.11B1.2367.1242
 -  Step-by-step instructions for solving  Puzzle 34, (37/49)   Diff: 13/5.5211.1111.3457
 -  Step-by-step instructions for solving  Puzzle 35, (37/49)   Diff: 13/5.4111.2313.6334
 -  Step-by-step instructions for solving  Puzzle 36, (37/49)   Diff: 13/4.3411.2336.3241
 -  Step-by-step instructions for solving  Puzzle 37, (37/49)   Diff: 13/4.2321.1222.3375
 -  Step-by-step instructions for solving  Puzzle 38, (37/49)   Diff: 13/3.1132.3324.4551
 -  Step-by-step instructions for solving  Puzzle 39, (37/49)   Diff: 13/2.1232.AA11.4685
 -  Step-by-step instructions for solving  Puzzle 40, (37/49)   Diff: 13/2.11B2.4343.4245
 -  Step-by-step instructions for solving  Puzzle 41, (37/49)   Diff: 13/1.1251.1125.2484
 -  Step-by-step instructions for solving  Puzzle 42, (38/49)   Diff: 13/3.1122.4332.3653