SHA256 (stockfish-4-win.zip) = dcd66a81c21380f18623d54f966fc69476a86c8d5ab667e2b138aa2e4ebb3487
SIZE (stockfish-4-win.zip) = 1839577
SHA256 (stockfish-231-book.zip) = 07ee06bcd3fe1c5e0d90a2d0aede8bac2dd31d52fb4e1c9bc477bb5a8939e414
SIZE (stockfish-231-book.zip) = 3479786