Medium Sudoku Six Logic Puzzles (Vol 1) 
 Chapter 4: Twelve Medium (DiffLev 6) Sudoku-Junior Puzzles (numbers 13-24) 
 
-  Step-by-step instructions for solving  Puzzle 13, (23/36)   Diff: 6/63.3632
 -  Step-by-step instructions for solving  Puzzle 14, (24/36)   Diff: 6/65.5242
 -  Step-by-step instructions for solving  Puzzle 15, (24/36)   Diff: 6/56.5332
 -  Step-by-step instructions for solving  Puzzle 16, (25/36)   Diff: 6/64.4452
 -  Step-by-step instructions for solving  Puzzle 17, (25/36)   Diff: 6/54.3553
 -  Step-by-step instructions for solving  Puzzle 18, (25/36)   Diff: 6/23.5654
 -  Step-by-step instructions for solving  Puzzle 19, (26/36)   Diff: 6/76.3442
 -  Step-by-step instructions for solving  Puzzle 20, (26/36)   Diff: 6/74.5352
 -  Step-by-step instructions for solving  Puzzle 21, (26/36)   Diff: 6/66.4343
 -  Step-by-step instructions for solving  Puzzle 22, (26/36)   Diff: 6/64.4642
 -  Step-by-step instructions for solving  Puzzle 23, (26/36)   Diff: 6/36.7532
 -  Step-by-step instructions for solving  Puzzle 24, (26/36)   Diff: 6/26.5751