Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

add a common C54 line (currently misclassified as C50) #140

Merged
merged 1 commit into from
Nov 13, 2023

Conversation

jdart1
Copy link
Contributor

@jdart1 jdart1 commented Nov 11, 2023

No description provided.

@cmgchess
Copy link
Contributor

isnt C54 c3 followed by d4
i checked with chess.com opening list as well

@jdart1
Copy link
Contributor Author

jdart1 commented Nov 11, 2023

There are many C54 lines without d4. ECO version 4 (old paper copy) has 1. e4 c5 2. Nf3 Nc6 3. Bc4 Bc5 4. c3 Nf6 as the start of the classification (C53 is lines without .. Nf6). Then lines C54/2 through C54/5 have d4, and the rest of the lines have 5. d3. This is also consistent with how ChessBase does classification.

@cmgchess
Copy link
Contributor

Ah! I came across yours on Wikipedia. Guess there's a lot of cleaning up to do then

@niklasf niklasf merged commit e6b3f15 into lichess-org:master Nov 13, 2023
1 check passed
@jdart1 jdart1 deleted the C54-fix branch November 18, 2023 19:11
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

3 participants