Houdini ... a must see now ..... !!! And he shows tough ..... Even Rybka, Fritz, Chessmaster, a tone or HiArc are below ..... !!! Defeating artificial intelligence Houdini proves to be a daunting task .... ..... This is more than formidable opponent .... and I weigh my words ..... While attention to you !!!! and if you want the challenge .... well ..... good luck !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!