Challenging Sudoku Seven Logic Puzzles (Vol 1) 
 Chapter 6: Fourteen Challenging (DiffLev 14) Sudoku-7B Puzzles (numbers 43-56) 
 
-  Step-by-step instructions for solving  Puzzle 43, (34/49)   Diff: 14/41.1A12.2111.3249
 -  Step-by-step instructions for solving  Puzzle 44, (35/49)   Diff: 14/11.32AA.2123.2457
 -  Step-by-step instructions for solving  Puzzle 45, (36/49)   Diff: 14/42.121A.1223.4346
 -  Step-by-step instructions for solving  Puzzle 46, (36/49)   Diff: 14/31.11A1.1A34.5554
 -  Step-by-step instructions for solving  Puzzle 47, (36/49)   Diff: 14/22.A232.1123.5372
 -  Step-by-step instructions for solving  Puzzle 48, (36/49)   Diff: 14/21.1122.4111.3764
 -  Step-by-step instructions for solving  Puzzle 49, (37/49)   Diff: 14/45.2231.1331.2343
 -  Step-by-step instructions for solving  Puzzle 50, (37/49)   Diff: 14/34.2422.2112.5441
 -  Step-by-step instructions for solving  Puzzle 51, (37/49)   Diff: 14/21.1234.2A13.3383
 -  Step-by-step instructions for solving  Puzzle 52, (37/49)   Diff: 14/21.1111.1145.5671
 -  Step-by-step instructions for solving  Puzzle 53, (38/49)   Diff: 14/41.21B3.3234.3244
 -  Step-by-step instructions for solving  Puzzle 54, (38/49)   Diff: 14/31.A21A.1434.3473
 -  Step-by-step instructions for solving  Puzzle 55, (38/49)   Diff: 14/21.1111.2335.6354
 -  Step-by-step instructions for solving  Puzzle 56, (39/49)   Diff: 14/22.4111.1234.6741