ChessPairings.org

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Free chess tournament management software — available in 13 languages

🇬🇧 English Chess Pairing Software 🇮🇹 Italiano Software Gestione Tornei Scacchi 🇪🇸 Español Software de Emparejamiento de Ajedrez 🇫🇷 Français Logiciel d'Appariement d'Echecs 🇩🇪 Deutsch Schach-Turnierverwaltung Software 🇵🇱 Polski Oprogramowanie do Parowania Szachowego 🇹🇷 Türkçe Satranc Turnuvasi Yazilimi 🇷🇺 Русский Программа для Шахматных Турниров 🇳🇱 Nederlands Schaaktoernooi Software 🇵🇹 Português Software de Torneio de Xadrez 🇳🇴 Norsk Sjakkturnering Programvare 🇮🇳 हिन्दी शतरंज टूर्नामेंट सॉफ्टवेयर 🇨🇳 中文 国际象棋配对软件

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ChessPairings.org is built on two trusted, battle-tested open-source engines

♟ bbpPairings High-performance Swiss pairing engine written in C++. Implements the FIDE Dutch system rules (2025 edition, effective 2026) with weighted matching algorithms for optimal, fully compliant pairings. Pairing Engine ♞ TieBreakServer Python-based tiebreak calculation server. Handles all 28 tiebreak systems according to FIDE specifications, with support for TRF-16/TRF-25 formats and comprehensive tournament data validation. Tiebreak Engine

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Created by Stefano Loberti