Auto86%Harbor: pendingAgentic / Tool UseAbstract Reasoning

XiangqiBench

XiangqiBench for Closed-Loop Evaluation of LLM Agents

An executable benchmark with 119 tactical Chinese chess endgames where LLM agents play Red against an engine defender to measure closed-loop conversion success.

How to run

ltb · xiangqibench
$ npm i -g lettokenburn-cli
$ ltb bench info xiangqibench

External harness. No Harbor adapter has been generated for this benchmark yet. `ltb bench info` prints the known links.

Runs happen on your machine with your own subscription; only the score summary is pushed. CLI docs

Scores

12 sourced entries
HarnessSourceConfidenceLink
Gemini 3.1 Pro38.7N/AIndependentmediumOct 1, 2026arxiv.org
GPT-5.517.6N/AIndependentmediumOct 1, 2026arxiv.org
Qwen3.7 Max13.4N/AIndependentmediumOct 1, 2026arxiv.org
Claude Opus 4.710.9N/AIndependentmediumOct 1, 2026arxiv.org
DeepSeek V4 Pro5.0N/AIndependentmediumOct 1, 2026arxiv.org
Seed 2.0 Pro2.5N/AIndependentmediumOct 1, 2026arxiv.org
DeepSeek R11.7N/AIndependentmediumOct 1, 2026arxiv.org
Kimi K2.51.7N/AIndependentmediumOct 1, 2026arxiv.org
DeepSeek V3.20.8N/AIndependentmediumOct 1, 2026arxiv.org
GPT-oss 120B0.8N/AIndependentmediumOct 1, 2026arxiv.org
MiniMax M2.50.8N/AIndependentmediumOct 1, 2026arxiv.org
Mistral Large 30.8N/AIndependentmediumOct 1, 2026arxiv.org

Every number links to where it was published. Low-confidence rows are muted and need per-cell verification.

Reproduced by the community

All runs
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About

XiangqiBench comprises 119 search-supported tactical endgames from classical treatises. Agents interact via a REPL interface with simulation tools to deliver checkmate against a strong engine defender.

Scoring relies on terminal win outcomes rather than move matching. Results reveal significant gaps between static competence and closed-loop success, with top models winning only a fraction of trials despite high pass@3 scores.