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Actually I just remembered, there is an absolutely amazing piece of chess software available for free, and it's open source too. It doesn't exactly have chess 'personalities' but it comes bundled with a HUGE collection chess engines of varying strengths from absolute beginner levels all the way to grandmaster and beyond. It's also an absolute treasure trove of learning material with cool exercises like guess the move from gm games, you can learn and practice openings and endgames. It's called Lucas Chess and there are no ads or subscriptions, I think you might find this one interesting, check it out here: https://lucaschess.pythonanywhere.com/