Triumviratus 8.1 20261028 - new version strong chess engine
Triumviratus is a strong, UCI-compliant chess engine written in C++. Author: Francesco ( fraTorsello) Rating Chess Engines Diary CEDR=3849 Triumviratus what's new? Triumviratus 8.1: pre-release (28 October 2026) This is a pre-release for testing. bench 219346 . Strength Against 8.0 (official release): +14.5 ± 6.5 Elo over 2,728 games, SPRT [0, 5] passed. Both universal PGO builds, 8+0.08, 1 thread per engine, UHO openings. At 15+0.15 and 30+0.3: estimated at about +10 Elo, from shorter runs. The network alone: +10.3 ± 4.3 Elo over Consilium (the 8.0 network) with the same search, 30k nodes per move, 8,332 games. What is new New network: Consilium Plebis Each side has its own expert, chosen by the non-pawn material that side is facing (8.0 chose one expert for both sides by the total piece count). Eight experts; the king-relative weights are int8, so the eight take the memory of four. A small pawn-king subnetwork, cached per thread, adds its view of the pawns...
