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Stockfish

Stockfish is a free, open-source, and strong UCI chess engine derived from Glaurung 2.1 that analyzes chess positions and computes optimal moves. It is one of the strongest chess engines available and uses a neural network-based evaluation since 2023.
Latest: 18.0 Winget
Last checked: Jun 9, 2026 12:10am
Rank: 4076/15140
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Overview

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License: GNU General Public License version 3 (GPLv3)Winget: Available

Version & Lifecycle

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Current: 18.0 N-2: 17.1 Oldest supported: 2004, Stockfish initial release circa 2008 Avg cadence: Every 205 days

Top Contributors

Top sitewide contributors:

  1. Anbarasan
  2. nico_k
  3. Bob
  4. Vigneshwaran

Community Notes

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Release Notes & Updates

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Also known as

Other names people use for this app — helps search and matching.

Stockfishstockfish Stockfish

Packaging Notes

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Source code distributed; no official GUI included; requires third-party GUI for use

Notes

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Stockfish does not include a graphical user interface; users must use a compatible GUI to interact with it. The engine is continuously developed by the Stockfish community and is widely used for chess analysis and competitions.