Koivisto

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Home * Engines * Koivisto

Hjalmar Munsterhjelm - Koivikko ja ruispelto [1]

Koivisto,
an UCI compliant open source chess engine by Kim Kåhre and Finn Eggers, at times supported by Eugenio Bruno, written in C++, and first released on GitHub in September 2020 under the GPL v3.0. The bitboard engine provides automated evaluation tuning by logistic regression, either using stochastic gradient descent or AdaGrad. Koivisto 5.0 in July 2021 replaced the perceptron approach of a real-men-evaluation (RME) by an own NNUE, as of Koivisto 5.9, with two layers [2].

Features

Board Representation

Search

Evaluation

Misc

Forum Posts

2020

Re: New engine releases 2020 by Finn Eggers, CCC, September 03, 2020
Re: Koivisto by Finn Eggers, CCC, September 04, 2020

2021

2022

External Links

Chess Engine

Misc

koivikko - Wiktionary

References

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