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On lichess.org, when you turn the opening book on in an analysis board, you get names for the openings. For example, after 1.e4 d6 2.d4 Nf6 3.Nc3 c6, lichess says the opening is called "Czech Defense." Many openings have standard, accepted names, but sometimes there is disagreement, especially with deep variations. There is also sometimes disagreement between different playing platforms. For example, sometimes chess.com uses different names than lichess. What sources provide lichess all of the names?

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    It would be interesting if you could give some examples of disagreements between lichess and chess.com and ... Mar 1, 2022 at 20:18
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    @kjetilbhalvorsen: See for example 1. d4 d5 2. Bf4, which Lichess calls the "Mason Variation" and Chess.com calls the "Accelerated London System."
    – Kevin
    Mar 2, 2022 at 2:07
  • One rare name I've seen is Maroczy for Tartakower for Fantasy variation
    – Mark C
    Mar 2, 2022 at 21:12

1 Answer 1

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Lichess is open source. That source includes a table of openings compiled by the contributors to lichess.

https://github.com/lichess-org/chess-openings

And if you want to see who exactly made what change/addition to the list, you can click on the .tsv file in question and examine the history.

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    @SecretAgentMan: Only if we neglect the immediate followup "Good grief, where do the contributors come up with all those obscure names..." :-) Mar 1, 2022 at 8:27
  • @HaukeReddmann: Well, to quote the linked page: "Improvements, additions and fixes are welcome."
    – Heinzi
    Mar 1, 2022 at 9:03
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    And if you want to see who exactly made what change/addition to the list, you can click on the .tsv file in question and examine the history. Mar 1, 2022 at 12:38
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    I prefer “blame”: it's a much clearer (albeit sometimes inaccurate) way to see whose fault something is.
    – wizzwizz4
    Mar 2, 2022 at 14:03

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