How to beat Jimmy
Jimmy is a beginner Chess.com bot listed at 600. See how its games develop, what usually goes wrong and how to review yours.
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How Jimmy plays
Jimmy is adaptive: he is listed at 600 but plays harder when you play well, so the game you win comfortably and the game you lose can be the same bot on the same day. That is what makes his reviews confusing. Two games with similar accuracy can end differently, because the opposition was not the same in both.
The plan
Ignore the result and read the accuracy. If your accuracy holds above roughly 80 across several games against Jimmy, you are beating the level regardless of how the individual games ended. Play the same solid opening every time so the comparison means something.
Review the game you just lost
Bot games on Chess.com have their own address once they are finished: chess.com/game/computer/…. Type rv in front of it, rvchess.com/game/computer/…, and the full review builds itself: accuracy for both sides, every move labelled, and a graph you can click to jump to the moment the game turned. It is free, needs no account, and does not count against Chess.com's daily Game Review.
If you cannot find the address, paste the game's PGN instead. A free Chess.com account caps Game Review at one a day, and bot games count against it. Here every saved bot game can be reviewed in full, as many as you play.
Which move to look at
Against a beginner bot the useful move is rarely the last one. Open the review, find the first place the graph tips against you, and ask what Jimmy was threatening there. That is the pattern to fix; the final blunder is just where it showed up.
Bot strengths are as Chess.com listed them at the time of writing; the site re-rates and adds bots. This site is not affiliated with Chess.com.