Solving an SE 11.9 Puzzle with Logic
List of all dxSudoku videos: / @dxsudokuchannel
In this video demonstrated Method 3 (M3FC) Puzzle-Solving Technique which is an improved way of doing Forcing Chains and Nets.
Forum thread having the hardest puzzles I could find:
http://forum.enjoysudoku.com/the-hard...