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.sgf file: how to open it on Windows

1 Windows app registers the .sgf extension. Install one of them to open the file with a double-click.

About the format

Format
SGF record
Abbreviation
SGF · Smart Game Format
MIME type
application/x-go-sgf

Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).

Related guide: Change the default app for a file type in Windows