OpenPairings

Run world-class chess tournaments.

Swiss pairings from our own engine, FIDE tie-break rules, and official report formats - from the first round to the final crosstable, right in your browser.

Swiss (Dutch), round robin, Keizer & team tournaments, grouped per event
Ainalrami · our own FIDE 2026 Swiss engine, checked against billions of pairings
FIDE mode · warns you before anything would break the rules
FIDE C.07 tie-breaks, title norms & a pairing explanation for every round
Publish to OpenResults · live results, standings & team pages, only what you choose
Co-arbiters, a full audit trail and a manual in English & Dutch
TRF-2026, TRF, SWAR & PGN import / export, plus FIDE & KBSB rating lists

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