Sudokus are not about "number values" , it is all about a geometric positioning. Hence this technique.
Within the cosmos of sudokus you will find three levels, and when you've reached the smallest squares (cells), it is there that dottin expands your perception, much like a fractal.
Dottin takes the solver to the micro-level and the patterns created are easily recognizable.
A beginner may use it to ease the path of discovery and a master may use it to "read" the patterns of possibilities.
Dottin has a magic of it's own and by the nature of continuing the pattern of nines through the cells, it expands your vision.
If you are like me, you are a traditionalist (no freaking computer programs nor on-line puzzles).
Just the brain the puzzle and the pen, that is all that is needed.
Dottin can be used with any other technique, dottin creates patterns of recognition.
Once you've started thinking in DOTS, you'll never go back.
try it
http://sudokusolvingsys.blogspot.com/