Medium Sudoku Eight Logic Puzzles (Vol 1) 
 Chapter 6: Sixteen Medium (DiffLev 7-8) Sudoku-8-X Puzzles (numbers 47-62) 
 
-  Step-by-step instructions for solving  Puzzle 47, (40/64)   Diff: 7/545.8891
 -  Step-by-step instructions for solving  Puzzle 48, (42/64)   Diff: 7/635.8962
 -  Step-by-step instructions for solving  Puzzle 49, (45/64)   Diff: 7/987.4591
 -  Step-by-step instructions for solving  Puzzle 50, (45/64)   Diff: 7/777.2794
 -  Step-by-step instructions for solving  Puzzle 51, (46/64)   Diff: 7/464.7976
 -  Step-by-step instructions for solving  Puzzle 52, (47/64)   Diff: 7/656.9992
 -  Step-by-step instructions for solving  Puzzle 53, (43/64)   Diff: 8/9524.4694
 -  Step-by-step instructions for solving  Puzzle 54, (44/64)   Diff: 8/9811.2793
 -  Step-by-step instructions for solving  Puzzle 55, (45/64)   Diff: 8/9447.5574
 -  Step-by-step instructions for solving  Puzzle 56, (45/64)   Diff: 8/8768.5443
 -  Step-by-step instructions for solving  Puzzle 57, (45/64)   Diff: 8/6678.6651
 -  Step-by-step instructions for solving  Puzzle 58, (45/64)   Diff: 8/1348.7975
 -  Step-by-step instructions for solving  Puzzle 59, (46/64)   Diff: 8/6766.4791
 -  Step-by-step instructions for solving  Puzzle 60, (46/64)   Diff: 8/3577.6961
 -  Step-by-step instructions for solving  Puzzle 61, (47/64)   Diff: 8/8869.6622
 -  Step-by-step instructions for solving  Puzzle 62, (48/64)   Diff: 8/2347.8994