Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Enjoyable, but I'm disappointed

I've used many version of Chessmaster since version 3000, but CM 9000 is the first that's really frustrated me. Not because of the strength of play, but because of bugs that Ubi Soft seems to have no desire or ability to fix. At times, the computer tells me my game clock has run out, even though I have plenty of time left. When I look at the clock, it shows some ludicrous time, such as -43:00. At other times, the pregenerated opponents will simply stop thinking. You can sit until their time runs out, and they will not make a move. Neither problem happens all the time, but enough to be irritating.I may eventually give CM 10th a try, but, for now, I've switched to Fritz 9.