Also have a look at our directory of free go software.

• Jouez en direct contra GNU Go! Play with GNU Go 2.4 courtesy of the Fédération Française de Go.
• The Computer Go Ladder. GNU Go is a participant.
• The Computer Go Mailing List
• Markus Enzenberger's on-line On Line Computer Go Bibliography!
• fltkgo. A GUI for GNU Go based on fltk.
• GoThic. A Qt Goban widget that will work with GNU Go.
• Gogui from Markus Enzenberger is a Java workbench that allows you to play with a gtp engine such as GNU Go. Source code is in the CVS. Licence is GPL. Potentially very useful. Like Gothic, allows you to monitor the gtp stream.
• The CGoban1 development list.
• Theorem Proving in Go by Tristan Cazenave, and le Recherche Abstraite Graduelle de Preuve.
• Tuning GNU Go
• Some perl tools for rotating and displaying sgf files and test suites.
• The SGF specification
• The Go Modem Protocol.
• GNU Go incidence reports
• Bouzy's thesis (from the Go archives computer library at IGS) describes the algorithm in score.c around page 84.
• Eyespace values in Go by Howard Landman, another paper we've found useful.

Send inquiries and bug reports to gnugo@gnu.org.