Is it time for a chess checkup?
A plain-English introduction to ChessCheckup.com, a principles-first chess habit check for beginner and intermediate players, powered by the Elo+Chess reporting engine.
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研究
Elo+Chess で使用されるチェスの分析、レーティング マッピング、ベンチマークの構築、およびデータ駆動型の改善手法に関する研究メモ。
Elo+Chess の層別 Lichess ベンチマーク曲線の構築
Elo+Chess が大規模な移動状態サンプルとプレイヤー ゲーム サンプルから階層化された Lichess ベンチマーク カーブ、プレイヤー履歴パーセンタイル ターゲット、およびプロダクション レポート グラフィックスを構築する方法を説明する方法論のメモ。
論文を読むモーダル回帰を使用したクロスプラットフォームのチェスのレーティング マッピングの推定
Elo+Chess の同一ユーザー名レーティング マッピング調査、モーダル フィットの動機、フィルタリング基準、およびゲーム タイプ別の現在の Lichess から Chess.com へのコンバージョン推定値を説明するメソッド ノート。
論文を読むA Very Large Scale Study of the Halloween Gambit
A Lichess.org study of the Halloween Gambit's frequency, practical success, played-versus-declined outcomes, and opening clock impact from January 2025 through May 2026.
Read articleWho let the cows out?
A Lichess.org study of tucked Cow setups, single-cow redeployments, and the full b/g-file knight shuffle from January 2025 through May 2026.
Read articleYour Chess Teacher Was Right: We Analyzed 1.3 Billion Games To Prove It
A public Medium article sharing Elo+Chess research observations and charts for a wider chess audience.
Read on MediumDoes Bullet and Blitz Hurt 10min Rapid Improvement on Lichess.org?
An observational Lichess.org study of more than one billion public games testing whether 1min bullet and 3min blitz volume is associated with slower 10min rapid improvement for beginner and club-level players.
Read articleDo Beginners Resign Too Early?
A low-key research note on Lichess 10+0 rapid resignation-like endings. In this dataset, well-sampled rating bands from under 800 to nearly 1800 typically resign around a 7-pawn Stockfish disadvantage.
Read articleA comparison of pieces remaining on-board for valid game endings across Elo buckets.
A Lichess study comparing how many pieces remain on the board at valid checkmate and engine-confirmed resignation-like endings across Bullet, Blitz, 10min Rapid, and >10min Rapid.
Read studyPawn Patience Gallery
Static research gallery showing the average move number before each original pawn is first touched, split by game type, color, pawn file, and Elo bucket.
Explore galleryf3/f6 Move Metrics
Static research gallery for White f3 and Black f6 rates, including before castling, before development completion, and associated win-rate views by Elo bucket.
Explore galleryPawn Capture and Promotion Outcomes
Static research gallery showing the average row where pawns are captured, how often promoted pieces are captured immediately, and how often captured promotions produce no net material gain.
Explore gallery