Free chess engines:
Stockfish collections for macOS and Apple Silicon:
- collections of some Stockfish binaries. A binary file has the name “stockfish” with the suffix of its version, e.g., sockfish15, stockfish15_1
- zip file: unzip it anywhere. Before using an engine, you should run it first to give it the right to run: right-click for the popup menu and select Open With->Terminal
- pkg file: an installer, codesigned and notarized by Apple (safe from malware). After running it, all Stockfish binaries will be installed into a specific folder (typically it is /usr/local/bin/). All are ready to run (users don’t need to set the right to run for them)
For macOS: Versions: 2.1 2.3.1 3 4 5 6 7 8 9 10 11 12 13 14 14.1 15 15.1. Warning: those binaries can’t run with Apple Silicon since they are compiled with bmi2 instructions
– Stockfish collection for macOS - zip file
– Stockfish collection for macOS - pkg file (codesigned & notarized)
For Apple Silicon: Versions: 3 4 5 6 7 8 9 10 11 12 13 14 14.1 15 15.1 (missing two binaries 2.1, 2.31 compared with ones for macOS). All are in native Apple Silicon code and typically they are faster than ones for Intel
– Stockfish collection for AppleSilicon - zip file
– Stockfish collection for AppleSilicon - pkg file (codesigned & notarized)
Chess game databases:
– Lichess Puzzles 2.4 million games, OCGDB format
– Megabase 3.45 million games, OCGDB format
– Big EPD collection, 57K positions, EPD.DB3 format