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Integral 8 - new version chess engine

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Integral - UCI Chess Engine
Author - Aron Petkovski  Rating Chess Engines Diary CEDR=3816

The Integral engine, ranked among the top 64, competes in the CEDR Chess League. In the 09/2026 season, it played in the Second League and finished 6th, missing out on promotion. Will this version step up and secure a spot in the First League in the 10/2026 season?


What's new?:
Notes
It's been over a year since the last Integral release — apologies! However, this version is much stronger and supports DFRC play, hopefully offsetting the wait for a new release :)

Network Improvements
Dataset grew to 16.7b unfiltered positions
Threat inputs
50-move rule inputs
Less notable things that I can't remember
Search Improvements

SPSA tunes (latest tune optimizes for SMP conditions)
A plethora of search patches
Special thanks to everyone in my OpenBench instance and the kind, helpful people in the Stockfish discord.

Progression Tests
ELO    99.16 +- 4.91 (95%)
CONF   10.0+0.10s Threads=1 Hash=16MB
GAMES  N: 5002 W: 2016 L: 626 D: 2360
PENTA  [3, 164, 842, 1424, 68]
ELO    109.63 +- 4.28 (95%)
CONF   40.0+0.40s Threads=1 Hash=128MB
GAMES  N: 5002 W: 2014 L: 486 D: 2502
PENTA  [2, 82, 821, 1578, 18]



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