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Life & fun · February 25, 2026

Chess Rank — ELO to Rank

Transform your Elo into a visible, game-style rank

What it does

Chess Rank adds a visual layer to your chess Elo rating. See your rank like in Valorant or LoL — King IV, Rook II, etc. — directly on Chess.com with our browser extension. Same rating, just a more satisfying, tangible way to track your progress and feel proud of your achievements.

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    Hello HN, I'm Ghita, co-founder of ZeroEntropy (YC W25). We build high accuracy search infrastructure for RAG and AI Agents. We just released two new state-of-the-art rerankers zerank-1, and zerank-1-small. One of them is fully open-source under Apache 2.0. We trained those models using a novel Elo score inspired pipeline which we describe in detail in the blog attached. In a nutshell, here is an outline of the training steps: * Collect soft preferences between pairs of documents using an ensemble of LLMs. * Fit an ELO-style rating system (Bradley-Terry) to turn pairwise comparisons into…

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