SuDoku is a solver for the Su Doku problems which appear in various newspapers and seem to be a current craze. I've yet to find a solvable problem which it can't do (not that I've looked very hard). It warns when a puzzle has multiple solutions, and contains a 'hint mode' allowing you to check your own attempts without peeking, too. also available to download is a (slightly larger) un-mangled BASIC version, so you can look at the source-code if you want (the solving routine is horribly messy, however, as I've added quite a lot of features higgeldy-piggedly - sorry!).

New! SuDoku is now at version 1.2, with a number of extra usability features suggested by Rex Palmer - including locking of initial grid when entering 'Hint' mode (so you can't delete the 'given' numbers by mistakes) and full keyboard navigation/shortcut support.