I've heard that too back then, and it wasn't even Google saying that but people defending stockfish (who felt like the publication was unfair towards stockfish because of specific settings). I assumed it'd be a sensible thing to have for a chess engine. Thinking back on it, I think I only saw a mention of an opening book once, when SF played A0, and Google said stockfish "wasn't using an opening book" - they seemed to be highlighting that, I guess I just assumed it meant they'd turned it off for that match, rather than stockfish never had it. If you do have a conterexample of a top engine losing recently without being limited by an opening book, please share, I am interested. There are some tournaments without opening books, but those just end up being decided by top engines beating up on the weaker engines and farming points there. *I have had people repeatedly claim to me that engines draw a lot, but not all the time, but noone has been able to show me an example. The absolute top engines (as in top 3) playing each other from the starting positions would just be drawing every single game* so they are forced to sacrifice a piece for two pawns + castling rights on move 6 so the positions are unbalanced enough for decisive results - and they still end up with 75% drawrates. For most of the big computer chess tournaments there ARE opening books - but the purpose isn't to make the engines stronger, it is to force them out of well known lines and balanced positions into dangerous twosided unbalanced positions. Stockfish does not hardcode openings, it just plays them so well that we use it to make books. Please continue to give us your feedback and suggestions on how we can help make /r/chess better for everyone. Use the message the moderators link if your posts or comments don't appear, or for help with any administrative matters. Twitter/Facebook posts must contain a direct link to the tweet/post, and include the author's nameĬhess Spoiler format for problem answers etc., Public Moderator Logs (broken by API changes)ĭon’t engage in abusive, discriminatory, or bigoted behavior.ĭon't ask for advice about ongoing games.ĭo not use /r/chess exclusively to promote your own content. Instructions for /r/chess PGN addon ( Chrome, Firefox) News Puzzles Games Strategy Twitch Other Resources
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