> Stockfish argues that ChessBase isn’t compliant because they refuse to release the weights. No. The first license violation was that ChessBase released FF2 w

> Stockfish argues that ChessBase isn’t compliant because they refuse to release the weights. No. The first license violation was that ChessBase released FF2 without source code for their modified Stockfish, and without the GPL license. This was later fixed after we reported it. The second license violation was Houdini, which contains Stockfish code, and even today is not a available under the GPL.