i raised the level from 20min/game to 45 min yes theres significant difference in playing strength...i lost 2 games in a row..2nd went to endgame but the little machine stood better all the way...milano pro is surprisingly good..you can see it play some masters in tournaments
http://www.365chess.com/players/Comp_Milano_Pro
it beats even 2350 rated humans!!! it loses also but not to under 2100 rated humans...
ah i see sorry about that..when i saw your oppinion i thought it was about milano pro so automatically i said this guy has no idea about milano pro.sure its not impossible to beat the machine but trust me tactically its really great and it can build up positions to that...excalibur machines by the way are very weak..