What happens when you ask a 2026 coding agent like Claude Code to build a chess engine from scratch (with no plan, no architecture document, no step-by-step guidance) in a language that was never designed for this purpose? Building a chess engine is a non-trivial software engineering challenge: it involves board representation, move generation with dozens of special rules (castling, en passant, promotion), recursive tree search with pruning, evaluation heuristics, as well as a way to assess engine correctness and performance, including Elo rating. Doing it from scratch, with minimal human guidance, is a serious test of what coding agents can do today. Doing it in LaTeX’s macro language, which has no arrays, no functions with return values, no convenient local variables or stack frames, and no built-in support for complex data structures or algorithms? More than that, as far as I can tell, it has never been done before (I could not find any existing TeX chess engine on CTAN, GitHub, or TeX.SE). Yet, the coding agent built a functional chess engine in pure TeX that runs on pdflatex and reaches around 1280 Elo (the level of a casual tournament player). This post dives deep into how this engine, called TeXCCChess, works, the TeX-specific challenges encountered during development. You can play against it in Overleaf (see demo https://youtu.be/ngHMozcyfeY) or your local TeX installation https://youtu.be/Tg4r_bu0ANY, while the source code is available on GitHub https://github.com/acherm/agentic-chessengine-latex-TeXCCChess/
——美丽中国建设取得新的重大进展。绿色生产生活方式基本形成，碳达峰目标如期实现，单位国内生产总值二氧化碳排放降低17%，清洁低碳安全高效的新型能源体系初步建成。生态环境质量全面改善，主要污染物排放总量持续减少，地级及以上城市细颗粒物（PM2.5）浓度降至27微克/立方米以下，优良水体比例提高到85%，森林覆盖率达到25.8%，生态系统多样性稳定性持续性不断提升。，推荐阅读chatGPT官网入口获取更多信息
。手游对此有专业解读
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This suggests that sleep may temporarily mask the effects of tinnitus by engaging the same brain circuits.
后来被逼无奈，把JDK从17升到21，SpringBoot从2.7升到3.2，然后在配置文件里加了一行 spring.threads.virtual.enabled=true，再压测——好家伙，QPS直接飙到3100！我揉了揉眼睛，以为压测工具坏了，换了三台机器、换了两种压测工具，结果都一样。那一刻我彻底服了：原来我们这么多年调线程池，都是在错误的路上狂奔。