Stockfish icon
Stockfish icon

Stockfish

Open-source UCI chess engine for analyzing positions, evaluating candidate lines, and selecting moves. It runs from the command line and connects to independent chess GUIs and apps on desktop or mobile systems for board display and move input, with GPLv3 source access.

Stockfish screenshot 1

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Platforms

  • Mac
  • Windows
  • Linux
  • Android
  • iPhone
  • Android Tablet
  • iPad
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Games

Apple AppStore

  •   Updated 
  •   3.97 avg rating
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GitHub repository

  •  16,918 Stars
  •  3,075 Forks
  •  43 Open Issues
  •   Updated  
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Download from iPhone App Store

Install from the command line

  • winget install -e --id Stockfish.Stockfish
  • brew install stockfish

Be careful what you paste into a terminal. Check what a command installs before running it.

What is Stockfish?

Stockfish is a free and strong UCI chess engine derived from Glaurung 2.1 that analyzes chess positions and computes the optimal moves.

Stockfish does not include a graphical user interface (GUI) that is required to display a chessboard and to make it easy to input moves. These GUIs are developed independently from Stockfish and are available online. Read the documentation for your GUI of choice for information about how to use Stockfish with it.