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JEV CHESS — jevchess.com
A single shared chess game where visitors play against Jev, which weighs every legal move at once as one Choice question and shades the board with its probabilities.
- Format
- Playground
- Reading time
- 2 min
- Published by
- Community
- Last verified
- Sep 2026
This is one of several Jev listings for the same project. The canonical entry is Jev Chess — hemanth.
Works forJev for Realtime control
Highlights
- The scoreboard reads Jev 76.5 to humans 40.5 across 117 games.
- A single Choice question covers every legal move, so Jev cannot play an illegal one.
- Jev's probability distribution over the legal moves shades the board in this pixel-art game.
- Per the site's schema.org data, Jev plays one side by picking from every legal move at once while anyone online plays the other.
Watch out
A community game site with no published method for the running human-versus-Jev score, which changes as new games are played.
Questions about this entry
Short answers drawn from the linked project or page.
A tally, not a rating. The site title carries a live score of Jev 245.5 against humans 77.5, and no method behind it is published. The figure shifts as more people play, so it cannot be compared against a chess engine.
It picks its own moves. Per the site's schema.org data, Jev plays one side by selecting from every legal move in a single Choice question, while whoever is online plays the other side. There is no fixed opponent to outplay.
It cannot, structurally. Every legal move is folded into one Choice question, and a Choice answer can only return one of the options you supplied, so a move outside the set is not representable in the response at all.
It is Jev's probability distribution across the legal moves, drawn as shades so you can read its confidence before it commits. It is a window into the model's ranking of options, not a hint about which move is objectively strongest.
It is a browser game with no documented install or sign-in: you open the site, move on the shared board, and Jev answers from the legal moves as the other side.
One shared game. Whoever is online plays the human side while Jev plays the other, and the running human-versus-Jev tally changes as more games are played.
No. It is a public browser playground rather than a package: the site itself is the interface, and no embeddable client or endpoint is documented, so reuse means reimplementing the Choice-over-legal-moves pattern yourself.
Reactions & coverage
Posts, threads, and videos about this entry from around the web.
X: Jev plays itself at 3D chess
Hacker News: Software Bombe and live Enigma demo where Jev ranks cribs and judges plaintext.
ag_212 pointsShow HN: Jev as the Bletchley Park Analyst: A Software Bombe on EnigmaRead the thread on Hacker NewsHacker News: Show HN for public Minecraft PvP where a diffusion LM picks moves from structured state.
2 pointsShow HN: Minecraft PvP against DiffusionGemma-as-Jev, 24 ms per decisionRead the thread on Hacker NewsHacker News: Show HN: Jev finished a Pokémon Red run, with the Hall of Fame stats on the landing page.
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