Tournament Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 8: Twelve Tournament (DiffLev 26-29) HyperSudoku-12 Puzzles (numbers 61-72) 
 
-  Step-by-step instructions for solving  Puzzle 61, (103/144)   Diff: 26/55.4412.3223.22B2.6423.2568.9852
 -  Step-by-step instructions for solving  Puzzle 62, (108/144)   Diff: 26/43.2353.4545.4121.1133.4899.8574
 -  Step-by-step instructions for solving  Puzzle 63, (98/144)   Diff: 27/844.62B2.1111.1112.A143.6845.8981
 -  Step-by-step instructions for solving  Puzzle 64, (102/144)   Diff: 27/554.1244.2246.4552.2112.3366.5882
 -  Step-by-step instructions for solving  Puzzle 65, (101/144)   Diff: 28/8522.AAA1.2235.4442.3524.5377.5562
 -  Step-by-step instructions for solving  Puzzle 66, (101/144)   Diff: 28/7532.2333.1A12.4341.1B32.3554.9964
 -  Step-by-step instructions for solving  Puzzle 67, (107/144)   Diff: 28/8622.1A22.3122.2244.3484.4533.4789
 -  Step-by-step instructions for solving  Puzzle 68, (107/144)   Diff: 28/8432.3334.4855.1111.1123.3599.6432
 -  Step-by-step instructions for solving  Puzzle 69, (100/144)   Diff: 29/3.3242.3223.3211.4658.64D3.2233.4663
 -  Step-by-step instructions for solving  Puzzle 70, (104/144)   Diff: 29/7.5554.2521.2A23.6434.4512.5433.2365
 -  Step-by-step instructions for solving  Puzzle 71, (104/144)   Diff: 29/7.2324.21A1.A1A2.3323.6655.4485.8842
 -  Step-by-step instructions for solving  Puzzle 72, (105/144)   Diff: 29/6.4431.5342.1211.1122.2112.7975.4896