Variations on Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 28: Three Tournament HyperSudoku-by5 Puzzles (numbers 76-78) 
 
-  Step-by-step instructions for solving  Puzzle 76, (243/369)   Diff: 23/999.9999.7311.1232.221A.2693
 -  Step-by-step instructions for solving  Puzzle 77, (262/369)   Diff: 24/9999.9999.9544.54C1.2233.4553
 -  Step-by-step instructions for solving  Puzzle 78, (267/369)   Diff: 28/9999.9999.9999.6686.9224.2A25.7664