Variations on Tournament Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 5: Eight Tournament Education-Xtreme Puzzles (numbers 17-24) 
 
-  Step-by-step instructions for solving  Puzzle 17, (271/369)   Diff: 22/91.3446.7789.8999.9999.9953
 -  Step-by-step instructions for solving  Puzzle 18, (266/369)   Diff: 25/9.9956.9997.6999.9999.9859.9662
 -  Step-by-step instructions for solving  Puzzle 19, (260/369)   Diff: 26/99.9999.9999.9954.4A12.4559.6534
 -  Step-by-step instructions for solving  Puzzle 20, (250/369)   Diff: 27/999.9998.2333.4341.B334.3234.6552
 -  Step-by-step instructions for solving  Puzzle 21, (265/369)   Diff: 27/995.3499.9999.9999.9999.9444.5432
 -  Step-by-step instructions for solving  Puzzle 22, (246/369)   Diff: 29/9.9999.9624.4313.5434.2597.A437.5762
 -  Step-by-step instructions for solving  Puzzle 23, (257/369)   Diff: 29/9.9999.9999.9936.95B3.2243.3344.5442
 -  Step-by-step instructions for solving  Puzzle 24, (258/369)   Diff: 29/9.9677.4687.9999.9999.4657.92A2.4794