Medium Sudoku Eight Logic Puzzles (Vol 1) 
 Chapter 11: Sixteen Medium (DiffLev 5-6) HyperSudoku-8up Puzzles (numbers 127-142) 
 
-  Step-by-step instructions for solving  Puzzle 127, (37/64)   Diff: 5/9.9941
 -  Step-by-step instructions for solving  Puzzle 128, (38/64)   Diff: 5/9.7992
 -  Step-by-step instructions for solving  Puzzle 129, (38/64)   Diff: 5/7.9963
 -  Step-by-step instructions for solving  Puzzle 130, (38/64)   Diff: 5/6.9946
 -  Step-by-step instructions for solving  Puzzle 131, (40/64)   Diff: 5/9.9651
 -  Step-by-step instructions for solving  Puzzle 132, (41/64)   Diff: 5/9.9981
 -  Step-by-step instructions for solving  Puzzle 133, (36/64)   Diff: 6/97.6552
 -  Step-by-step instructions for solving  Puzzle 134, (39/64)   Diff: 6/97.7861
 -  Step-by-step instructions for solving  Puzzle 135, (39/64)   Diff: 6/66.8685
 -  Step-by-step instructions for solving  Puzzle 136, (41/64)   Diff: 6/99.5651
 -  Step-by-step instructions for solving  Puzzle 137, (43/64)   Diff: 6/88.5893
 -  Step-by-step instructions for solving  Puzzle 138, (43/64)   Diff: 6/86.8957
 -  Step-by-step instructions for solving  Puzzle 139, (43/64)   Diff: 6/79.9853
 -  Step-by-step instructions for solving  Puzzle 140, (45/64)   Diff: 6/89.9881
 -  Step-by-step instructions for solving  Puzzle 141, (47/64)   Diff: 6/98.8895
 -  Step-by-step instructions for solving  Puzzle 142, (47/64)   Diff: 6/76.6997