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弈瞬：双 Jev 五子棋九宫格输入实验台，逐手查看模型决策，支持真实对局回放与实时对战。
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CommunityJev Demos & Experiments
Jev Gomoku
A gomoku lab that runs nine 15x15 games at once with two Jev players, holding the rules fixed while you vary how much tactical detail reaches the model.
- Stars
- 3
- Language
- JavaScript
- Published by
- Community
- Author
- XieChengYuan
- Last verified
- Oct 2026
Works forJev for Classification
Used inJev for Software & DevTools
- Languages
- JavaScript
Highlights
- Every move is one fixed Choice question over rule-generated candidates, and the live board shows state, questions, answers, usage and candidate probabilities.
- Five input schemes isolate what explicit information buys: board only, plus tactics, one-ply lookahead, a coordinate list, or line counts.
- The hosted build replays 144 recorded Jev decisions with an API request count of zero, and only goes live when you supply your own key.
- Local runs need Node 22+, write each round to reports/experiments, and npm test covers rules, input isolation, decision parsing, replay and live transport.
Watch out
The matchup is not unassisted. Candidates are heuristic-filtered to your own top eight, the opponent's top four plus all immediate wins and direct blocks, so the model chooses from a shortlist rather than every empty point. Option probabilities are explicitly not win rate, there is no Score or Noul toggle and no win-rate configuration, and no chain of thought is collected. The README states that nine-game outcomes depend on opening, side, model version and sampling, so a result cannot on its own show that one input scheme is better. The short-term lookahead is computed by local rule code, not by the model, and the four-direction analysis only looks at consecutive stones. Live play bills your own OpenRouter account, and pausing does not cancel already-submitted upstream requests, which may still be charged. Copy reviewed against the repository README on 2026-10-04, not from running it.
Questions about this entry
Short answers drawn from the linked project or page.
No, and the README says so directly. Nine-game outcomes are affected by the opening, which side the model has, the model version and sampling variation, so a single round cannot isolate the input. The author's own recommendation is stricter: switch input on the same position, repeat runs and swap colors before drawing any conclusion.
Yes, through the hosted build. The default mode replays 144 recorded Jev decisions with an API request count of zero, is marked as replay in the interface and locks the input scheme. Live battles are the part that needs your own OpenRouter key, with usable credit and Jev access, and that account pays.
No. The product exposes no Score or Noul decision switch and no final win-rate configuration; only Choice is used, and the README states plainly that option probabilities are not win rate. It also notes the model supplies no chain of thought here, and the underlying parser keeps historical regression tests for Score and Noul shapes.
Symmetric by construction: both sides use the same candidate policy, code fixes the question type rather than letting the model choose it, and the model only picks the placement. The catch is that the candidate shortlist is pre-filtered by heuristic rules, so neither player is choosing among all empty points.
Board only; board plus tactical facts such as immediate wins, blocks and win counts after each move; board plus tactics plus a one-ply lookahead; the same board restated as black and white coordinate lists; and board plus tactics plus four-direction consecutive-line counts. The lab holds the rules and question template fixed so the input text is the only variable.
Requests go straight from the browser to OpenRouter's decisions endpoint, up to three games in parallel, and the key lives only in the current page's memory: it is cleared on submit, is not written to the browser archive, the repository, GitHub Actions or the site's server, and you re-enter it after a refresh.
Two ways. A local run writes each round to reports/experiments/<roundId>.json and keeps .env and the report directory out of version control, while the hosted build saves rounds to the browser's IndexedDB with download-to-JSON and restore of the last archive. Clearing browser data erases those archives, so download what you want to keep.
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