Stockfish

UCI chess engine

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6Distinct people

6Mentions

0Explicit recommenders

1.9KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

UCI chess engine

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year6 dated mentions

Observed mentions: 2013-11-25 05:37:51 UTC to 2017-12-06 19:57:19 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2013	2013-01-01 00:00:00 UTC	2014-01-01 00:00:00 UTC	1	1
2014	2014-01-01 00:00:00 UTC	2015-01-01 00:00:00 UTC	2	2
2015	2015-01-01 00:00:00 UTC	2016-01-01 00:00:00 UTC	0	0
2016	2016-01-01 00:00:00 UTC	2017-01-01 00:00:00 UTC	0	0
2017	2017-01-01 00:00:00 UTC	2018-01-01 00:00:00 UTC	3	3

What Hacker News says

6 sources

gwern·Dec 6, 2017

To be a little more precise: Stockfish has used >5,667,382 CPU-hours (5.6 million CPU-hours) adding up just the participants who contributed >10,000 CPU-hours according to https://github.com/mcostalba/Stockfish/blob/master/Top%20CPU...

In Mastering Chess and Shogi by Self-Play with General Reinforcement Learning

nl·Dec 6, 2017

For those complaining about the TPU resources used during self training it is worth noting that Stockfish has used over 10,000 CPU hours for tuning its parameters. See https://github.com/mcostalba/Stockfish/blob/master/Top%20CPU...

In Mastering Chess and Shogi by Self-Play with General Reinforcement Learning

josephernest·Nov 19, 2017

Is it only this code and nothing else? https://github.com/mcostalba/Stockfish/tree/ONE_PLY/src Is there no DB or machine learning inside?

In Stockfish Wins Chess.com Computer Championship

meowface·Jun 1, 2014

I'm rather surprised at how relatively simple and small the codebase is: https://github.com/mcostalba/Stockfish/tree/master/src

In Strongest chess player, ever

icambron·Jun 1, 2014

I always thought of the heuristics for evaluating a chess position as the really hard part of building a chess engine; i.e. how do you capture all of the positional subtleties in a number to feed into minimax? But looking at the source, it's not really that complicated [1]. Can someone who knows more than me comment on that? Is it that the innovations are elsewhere? That good chess really can be boiled down to < 1000 LOC? That the numbers in this heuristic are just super expertly tuned? [1] https://github.com/mcostalba/Stockfish/blob/master/src/evalu...

In Strongest chess player, ever

pk2200·Nov 25, 2013

Stockfish (ranked #2 on the various computer rating lists) runs on Mac, Windows, Linux, Android. It's also free and open source! http://stockfishchess.org/ https://github.com/mcostalba/Stockfish

In How to Get Good at Chess, Fast