Variations on Intermediate Sudoku Logic Puzzles (Vol 1) 
 Chapter 27: Eight Challenging Sudoku-7C Puzzles (numbers 145-152) 
 
-  Step-by-step instructions for solving  Puzzle 145, (36/49)   Diff: 13/3.AB21.2243.5542
 -  Step-by-step instructions for solving  Puzzle 146, (37/49)   Diff: 13/4.3222.2322.4542
 -  Step-by-step instructions for solving  Puzzle 147, (38/49)   Diff: 13/4.1123.2322.3753
 -  Step-by-step instructions for solving  Puzzle 148, (38/49)   Diff: 13/3.2233.5124.1471
 -  Step-by-step instructions for solving  Puzzle 149, (40/49)   Diff: 13/5.2211.3324.5534
 -  Step-by-step instructions for solving  Puzzle 150, (35/49)   Diff: 14/11.111A.A222.5944
 -  Step-by-step instructions for solving  Puzzle 151, (38/49)   Diff: 14/42.1221.1444.2542
 -  Step-by-step instructions for solving  Puzzle 152, (39/49)   Diff: 14/1A.3124.4235.2353