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============================== My email: jotes@go2.pl



Iris 2.0 - new version chess engine

on


Iris - UCI chess engine
Author: Citrus610

Iris 2.0 what's new?

Release notes
The second release of Iris! Iris v2.0 is significantly stronger than v1.0.

This comes mostly from introducing NNUE, which completely replaces the previously used HCE. The network is 768 -> 128x2 -> 1, trained on 150,000,000 positions generated from self-play.

Additionally, a few updates to search have been made, such as singular extension, razoring, etc.
Once again huge thanks to members of the MinusKelvin discord for helping me and allowing me into their Openbench instance.
Choose your binary based on microarchitecture levels.

Self-play against Iris v1.0
STC

Elo   | 524.61 +- 45.29 (95%)
Conf  | 8.0+0.08s Threads=1 Hash=8MB
Games | N: 1010 W: 933 L: 17 D: 60
Penta | [0, 0, 18, 58, 429]
LTC

Elo   | 457.89 +- 33.78 (95%)
Conf  | 40.0+0.40s Threads=1 Hash=64MB
Games | N: 1002 W: 882 L: 14 D: 106
Penta | [0, 1, 13, 105, 382]

Iris 2.0 download


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