The itch
I'm a retired engineer in Sydney. About a year ago I started taking my rapid games on chess.com seriously — playing more, and actually reviewing afterwards. The problem was always the same: I'd finish a game, know roughly that I was leaking rating somewhere, and then go drill a generic puzzle set that had nothing to do with the mistake I'd just made. The blunder that actually cost me last Tuesday never came back around.
So I built the tool I wanted. It pulls my own games, runs every move through Stockfish, finds the exact moment a game turned, and hands those positions back to me as puzzles — scheduled so the ones I keep missing come back sooner. After a few months it had genuinely changed how I studied, and friends at the club wanted a copy. That's ChessMend.
The same itch showed up again with openings. I had a rough feeling I was weaker in some lines than others, but no real number — so ChessMend grew an Opening Stats screen that scores every opening I've actually played, and an Opening Coach that drills a repertoire against a coach who plays like a real opponent, then hands off to Stockfish the moment I step outside my own prep.
What it believes
Your games, not a stranger's
Every puzzle comes from a position you actually reached and misplayed. That's the whole idea.
Your machine, your data
Analysis runs locally with a bundled engine. Your games stay on your PC — nothing is uploaded to a ChessMend server to be studied.
Own it, don't rent it
A yearly licence if you like subscriptions, or pay once and keep it forever. No dark patterns, no auto-renew traps.
How it's made
ChessMend is a native Windows application. The heavy lifting is done by Stockfish, the open-source chess engine, which is bundled with the installer and used under the GNU General Public License v3. ChessMend talks to it the same way any GUI does, over the standard engine protocol; ChessMend's own code stays separate. You can get the Stockfish source from the official project at any time.
ChessMend imports from chess.com and lichess.org. It isn't affiliated with, endorsed by, or connected to either site — they're just where your games live. Imports are done in a way that respects each site's terms of use.
Who's behind it
ChessMend is a small independent project, not a venture-backed startup with a support call centre. That has a good side and an honest side. The good side: you can email me and a real person who wrote the code will read it and usually reply within a day or two. The honest side: I'm one person, so I ask for a little patience if something takes a day longer than a big company would take.
Questions, bugs, feature ideas, or a coaching/club licence? Send a message or email hello@chessmend.com.
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