Variations on Intermediate Sudoku Logic Puzzles (Vol 1) 
 Chapter 64: Four Easy SuperSudoku-8 Puzzles (numbers 377-380) 
 
-  Step-by-step instructions for solving  Puzzle 377, (29/64)   Diff: 3/972
 -  Step-by-step instructions for solving  Puzzle 378, (32/64)   Diff: 3/994
 -  Step-by-step instructions for solving  Puzzle 379, (31/64)   Diff: 4/9951
 -  Step-by-step instructions for solving  Puzzle 380, (35/64)   Diff: 4/9922