Improve the logic code by looking at a solver site
I was wondering if the logic code could be improved, so the game could offer additional hints, and be able to solve more puzzles by itself.
A good solver is located at http://www.sudokusolver.co.uk
, and it has a very hard page at http://www.sudokusolver.co.uk/grids_veryhard.html
Is it feasible to review how the solver solves some of these very hard puzzles and add that to the logic on ZoS?