Variations on Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 35: Three Tournament HyperSudoku-Xtreme Puzzles (numbers 97-99) 
 
-  Step-by-step instructions for solving  Puzzle 97, (275/369)   Diff: 24/9999.9999.9999.52A2.2354.4573
 -  Step-by-step instructions for solving  Puzzle 98, (276/369)   Diff: 28/9999.9844.5526.5989.9999.8345.5658
 -  Step-by-step instructions for solving  Puzzle 99, (281/369)   Diff: 29/9.9999.9999.8798.9674.2A13.6555.7962