Variations on Intermediate Sudoku Logic Puzzles (Vol 1) 
 Chapter 18: Four Easiest Sudoku-7B-X Puzzles (numbers 93-96) 
 
-  Step-by-step instructions for solving  Puzzle 93, (17/49)   Diff: 2/91
 -  Step-by-step instructions for solving  Puzzle 94, (17/49)   Diff: 2/91
 -  Step-by-step instructions for solving  Puzzle 95, (18/49)   Diff: 2/93
 -  Step-by-step instructions for solving  Puzzle 96, (22/49)   Diff: 2/91