Challenging Sudoku Eight Logic Puzzles (Vol 1) 
 Chapter 3: Fourteen Challenging (DiffLev 13) Sudoku-8 Puzzles (numbers 1-14) 
 
-  Step-by-step instructions for solving  Puzzle 1, (38/64)   Diff: 13/7.2212.4122.4353
 -  Step-by-step instructions for solving  Puzzle 2, (40/64)   Diff: 13/6.3322.1136.5242
 -  Step-by-step instructions for solving  Puzzle 3, (41/64)   Diff: 13/7.12A1.1255.5344
 -  Step-by-step instructions for solving  Puzzle 4, (41/64)   Diff: 13/6.3211.1224.6742
 -  Step-by-step instructions for solving  Puzzle 5, (41/64)   Diff: 13/1.3212.4213.6871
 -  Step-by-step instructions for solving  Puzzle 6, (42/64)   Diff: 13/9.4224.2122.4451
 -  Step-by-step instructions for solving  Puzzle 7, (43/64)   Diff: 13/4.3353.1241.3671
 -  Step-by-step instructions for solving  Puzzle 8, (43/64)   Diff: 13/3.3334.3344.3451
 -  Step-by-step instructions for solving  Puzzle 9, (44/64)   Diff: 13/9.3311.1222.6832
 -  Step-by-step instructions for solving  Puzzle 10, (44/64)   Diff: 13/6.1233.4322.3645
 -  Step-by-step instructions for solving  Puzzle 11, (44/64)   Diff: 13/3.2AA2.A247.8742
 -  Step-by-step instructions for solving  Puzzle 12, (45/64)   Diff: 13/7.4334.6322.2342
 -  Step-by-step instructions for solving  Puzzle 13, (45/64)   Diff: 13/2.5533.1133.4474
 -  Step-by-step instructions for solving  Puzzle 14, (47/64)   Diff: 13/4.4112.3645.3464