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You can click on the blue arrows here to download tarballs https://opensource.apple.com/release/macos-10126.html https://opensource.apple.com/release/macos-1012

• jason_slack 9y ago
  Kudos! I'd love to see the game logic.
  • microtherion 9y ago
    The game engine itself is a pretty much off the shelf version of Sjeng: https://www.sjeng.org/indexold.html https://www.sjeng.org/indexold.html
    • gsnedders 9y ago
      That's interesting, given Chess has a near identical UI to the old NeXTSTEP Chess.app, which predates Sjeng!
      • microtherion 9y ago
        The initial board perspective is similar, but otherwise, the two apps are quite different (One obvious difference is that NeXTStep Chess.app used a bitmapped board with a fixed perspective). For comparison, the source of the older Chess is also available, in https://opensource.apple.com/release/mac-os-x-1015.html https://opensource.apple.com/release/mac-os-x-1015.html though some parts might no longer compile.