Onno Chess Software

Welcome to onnochess.com!

Onno is a professional chess program, more precisely a chess engine. That is a computer program that plays chess, i.e. computes the computer’s moves. You can also use Onno to analyse chess games.

Onno uses UCI to communicate with a chess GUI.

Onno plays a positional style. Compared to other engines, it can handle quiet positions better then tactical positions.

Onno is being tested on Schwarzer Blitz.

Onno Website in English

Onno Website auf Deutsch


July 17, 2021 Just wanted to update everyone on what I’ve been up to for the past few years. I’ve taken on a new project at CasinoBonusBezVkladu.cz, developing casino games (mainly slots) which has taken up most of my time. For those wondering about Onno, don’t worry, I plan on releasing a new version in the near future!

Dec 13, 2010 Many people asked me and I guess even more asked themselves if there are any news about Onno. To be honest, I could spend almost no time on development since this Summer. The two projects (one of which involves developing games for Casino Zara Online) I have at my job at Fraunhofer just have higher priorities; also I am neither willing nor constantly able to give up my private life to do both jobs with the engagement they require.

I seriously thought about discontinuing Onno, but I cannot accomplish that either. So I will resume Onno now, but I cannot tell how much time will be left for that. Not being able to spend sufficient time on Onno makes me sad, but there is no other choice.

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