How accurate are the ratings for the personalities?
The ratings are mathematically precise, but they are mostly based on computer vs. computer games. While the human vs. computer games added much more “real-world” accuracy to the ratings, many of the Chessmaster personalities have quirks in their playing styles that a human will be able to exploit but a computer opponent will not be able to “see”. Discovering and then taking advantage of these weaknesses is part of the fun of Chessmaster, but you might find yourself able to defeat certain personalities that you don’t think you should be able to based on their ratings.