Challenging Sudoku Twelve Logic Puzzles (Vol 1) 
 Chapter 26: Two Challenging (DiffLev 18-20) Farsightedly Puzzles (numbers 131-132) 
 
-  Step-by-step instructions for solving  Puzzle 131, (93/144)   Diff: 18/65.5964.7932.2222.5992
 -  Step-by-step instructions for solving  Puzzle 132, (92/144)   Diff: 20/8742.211D.46D2.3333.4797