{-WETT You could spend a lifetime on an Othello AI, or just a day if you start late enough and don't really value your sleep. I used this (http://ledpup.blogspot.com.au/search/label/Reversi) and this (http://www.mkorman.org/othello.pdf) and the great chessprogramming.com website as starting points, then tried my luck at machine learning using least squares for optimized feature weights. Since it wasn't really possible to accomplish that with 10 minutes left, I decided to accept the penalty I'll incur for submitting a little late, hoping that it would help my AI more than it hurts my score. Since hmatrix doesn't build on Windows though, and Mathematica is too cumbersome for iterative refining, all that got me precisely nothing. This leaves a pretty standard AI with Alpha-Beta-pruning, a static lookahead depth and questionable feature weighing... we'll see how it goes. -}