Variations on Intermediate Sudoku Logic Puzzles (Vol 1) 
 Chapter 67: Eight Challenging SuperSudoku-8 Puzzles (numbers 397-404) 
 
-  Step-by-step instructions for solving  Puzzle 397, (46/64)   Diff: 13/6.5131.2257.5441
 -  Step-by-step instructions for solving  Puzzle 398, (47/64)   Diff: 14/33.5432.11A3.4755
 -  Step-by-step instructions for solving  Puzzle 399, (48/64)   Diff: 14/64.111A.1126.9843
 -  Step-by-step instructions for solving  Puzzle 400, (46/64)   Diff: 15/711.32A2.A235.6372
 -  Step-by-step instructions for solving  Puzzle 401, (47/64)   Diff: 15/332.1432.1A13.8591
 -  Step-by-step instructions for solving  Puzzle 402, (46/64)   Diff: 16/9332.1111.21A2.4374
 -  Step-by-step instructions for solving  Puzzle 403, (46/64)   Diff: 16/7321.1111.2423.4752
 -  Step-by-step instructions for solving  Puzzle 404, (46/64)   Diff: 16/6232.1B23.3111.4564