Challenging Sudoku Eight Logic Puzzles (Vol 1) 
 Chapter 12: Sixteen Challenging (DiffLev 14) HyperSudoku-8up Puzzles (numbers 143-158) 
 
-  Step-by-step instructions for solving  Puzzle 143, (42/64)   Diff: 14/94.2133.2122.2443
 -  Step-by-step instructions for solving  Puzzle 144, (43/64)   Diff: 14/64.2211.1112.5692
 -  Step-by-step instructions for solving  Puzzle 145, (44/64)   Diff: 14/54.2C21.2572.2135
 -  Step-by-step instructions for solving  Puzzle 146, (45/64)   Diff: 14/54.1AA2.5541.1366
 -  Step-by-step instructions for solving  Puzzle 147, (45/64)   Diff: 14/4A.2133.222B.3595
 -  Step-by-step instructions for solving  Puzzle 148, (46/64)   Diff: 14/76.4234.1212.3461
 -  Step-by-step instructions for solving  Puzzle 149, (46/64)   Diff: 14/71.1221.1244.4764
 -  Step-by-step instructions for solving  Puzzle 150, (46/64)   Diff: 14/54.2222.4442.2463
 -  Step-by-step instructions for solving  Puzzle 151, (46/64)   Diff: 14/53.4442.3421.2444
 -  Step-by-step instructions for solving  Puzzle 152, (47/64)   Diff: 14/72.2324.5414.4522
 -  Step-by-step instructions for solving  Puzzle 153, (47/64)   Diff: 14/42.3343.3223.3582
 -  Step-by-step instructions for solving  Puzzle 154, (48/64)   Diff: 14/74.5443.1112.3472
 -  Step-by-step instructions for solving  Puzzle 155, (48/64)   Diff: 14/31.11B2.A143.5888
 -  Step-by-step instructions for solving  Puzzle 156, (48/64)   Diff: 14/23.2345.3533.2364
 -  Step-by-step instructions for solving  Puzzle 157, (49/64)   Diff: 14/25.421B.1227.5565
 -  Step-by-step instructions for solving  Puzzle 158, (50/64)   Diff: 14/67.3444.1123.4542