Andrew

Solo founder. Building FlexiChess.

#101463600 followers 2 following

🌟 5 day streak

About

I'm building FlexiChess, chess prep that runs in a browser. Most of my time goes on the search side. 10.4 million tournament games, searchable by idea, so you type 'Petrosian's exchange sacs' and they come back in seconds. Bootstrapped, out of Cairns. Launch is 1 Sep.

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Maker History

FlexiChessPrep smarter. Play sharper. Chess prep in your browser.
Sep 2026

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Joined Product HuntAugust 18th, 2026

Forums

p/flexichess

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2mo ago

For a while, position search only returned games from the 1890s

Partial position search on my chess database went through a stretch where every result came back from the 1890s. No date filter was set. It just did that.

Each position maps to a list of game ids, and I was slicing the first 4,000 off that list before ranking anything. Ids run roughly oldest to newest, so the pool being ranked was the oldest games in the corpus and nothing modern ever got considered.

It survived a while because it looked fine. Fast, and the games really did contain the position you asked for. You'd have to know there were 10.4 million games in there to notice yours only ever came from a few thousand.

Fixed now. Launching here on 1 September.

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2mo ago

FlexiChess - Prep smarter. Play sharper. Chess prep in your browser.

Search 10.4 million tournament games by idea — type "Petrosian's exchange sacs" and the matching games are on screen in seconds. Scout any opponent, find the leaks in your own games, and ask an AI coach that verifies every move it names. Free, in your browser.