Tournament Sudoku-by5 Logic Puzzles (Vol 1) 
 Chapter 6: Twenty Tournament (DiffLev 26-27) Sudoku-by5 Puzzles (numbers 61-80) 
 
-  Step-by-step instructions for solving  Puzzle 61, (248/369)   Diff: 26/99.9999.8894.2676.348B.4799.9952
 -  Step-by-step instructions for solving  Puzzle 62, (254/369)   Diff: 26/99.8563.8899.9579.9998.9999.8784
 -  Step-by-step instructions for solving  Puzzle 63, (256/369)   Diff: 26/99.9999.9911.1B54.9977.9996.9995
 -  Step-by-step instructions for solving  Puzzle 64, (258/369)   Diff: 26/99.9999.9997.7947.52D6.4789.9993
 -  Step-by-step instructions for solving  Puzzle 65, (258/369)   Diff: 26/99.8969.9999.9999.9762.2A12.2576
 -  Step-by-step instructions for solving  Puzzle 66, (262/369)   Diff: 26/99.9999.9999.9825.4264.A137.4742
 -  Step-by-step instructions for solving  Puzzle 67, (262/369)   Diff: 26/99.8443.2324.7999.9999.9996.7344
 -  Step-by-step instructions for solving  Puzzle 68, (264/369)   Diff: 26/95.467B.3665.8999.9999.9999.8853
 -  Step-by-step instructions for solving  Puzzle 69, (266/369)   Diff: 26/99.9999.9999.9976.2A12.32A2.2554
 -  Step-by-step instructions for solving  Puzzle 70, (266/369)   Diff: 26/99.9999.9999.7447.954D.3126.7874
 -  Step-by-step instructions for solving  Puzzle 71, (269/369)   Diff: 26/96.9766.8967.9899.9999.9999.9243
 -  Step-by-step instructions for solving  Puzzle 72, (262/369)   Diff: 27/999.9999.9997.4554.685A.1343.5652
 -  Step-by-step instructions for solving  Puzzle 73, (264/369)   Diff: 27/999.9997.9995.1113.3689.9999.9991
 -  Step-by-step instructions for solving  Puzzle 74, (265/369)   Diff: 27/998.5899.6456.4588.9999.8655.4873
 -  Step-by-step instructions for solving  Puzzle 75, (267/369)   Diff: 27/999.9999.9999.9622.564B.2453.4462
 -  Step-by-step instructions for solving  Puzzle 76, (268/369)   Diff: 27/999.7999.9999.9999.9554.B551.B255
 -  Step-by-step instructions for solving  Puzzle 77, (269/369)   Diff: 27/994.2236.533D.6799.9999.9999.5555
 -  Step-by-step instructions for solving  Puzzle 78, (270/369)   Diff: 27/999.9888.8999.9999.9799.77C6.7785
 -  Step-by-step instructions for solving  Puzzle 79, (271/369)   Diff: 27/999.9799.9999.9999.6C36.9974.3756
 -  Step-by-step instructions for solving  Puzzle 80, (271/369)   Diff: 27/998.6999.9999.9899.8998.9994.B445