Variations on Intermediate Sudoku Logic Puzzles (Vol 1) 
 Chapter 59: Four Easy HyperSudoku-8up Puzzles (numbers 345-348) 
 
-  Step-by-step instructions for solving  Puzzle 345, (26/64)   Diff: 3/982
 -  Step-by-step instructions for solving  Puzzle 346, (27/64)   Diff: 3/982
 -  Step-by-step instructions for solving  Puzzle 347, (29/64)   Diff: 3/991
 -  Step-by-step instructions for solving  Puzzle 348, (38/64)   Diff: 4/9971