Triumviratus has taken the top spot in computer chess engine rankings, edging out Stockfish 18 and 19 with a rating of 3969.2. The engine scored 437.5 points across 540 games, posting an 81.0% performance rate that outpaces the competition.
Stockfish's split ranking into separate versions reflects the ongoing development of the industry standard. Stockfish 18 sits second at 3964.7 with 512.5 points from 643 games, while the newer Stockfish 19 trails slightly at 3964.0 despite identical theoretical strength. Revolution-5.90-140626 rounds out the top tier at 3961.6.
The rankings reveal something important about modern engine competition. The gap between first and tenth place spans roughly 40 rating points. That's tight. Reckless, Cool Iris, and Rems M all cluster around 3950-3958, suggesting the frontier of engine strength has consolidated. Even lower-ranked entries like Berserk 14 and Viridithas remain formidable opponents.
Performance percentages tell the real story. Triumviratus converted 81% of its games, an exceptional rate. Stockfish variants hover around 80%, while engines ranked outside the top ten drop to 72-78% conversion rates.
These numbers come from engine-to-engine matches, not human play. The testing environment strips away opening preparation and human psychology. What matters here is raw calculation, endgame precision, and tactical accuracy. Triumviratus is executing that formula better than anything else right now.