Variations on Intermediate Sudoku Logic Puzzles (Vol 1) 
 Chapter 58: Four Easiest HyperSudoku-8up Puzzles (numbers 341-344) 
 
-  Step-by-step instructions for solving  Puzzle 341, (22/64)   Diff: 2/94
 -  Step-by-step instructions for solving  Puzzle 342, (22/64)   Diff: 2/93
 -  Step-by-step instructions for solving  Puzzle 343, (22/64)   Diff: 2/93
 -  Step-by-step instructions for solving  Puzzle 344, (22/64)   Diff: 2/92