GNU Go

GNU Go is a free program that plays the game of Go.
you can using this to play Go with your PC.
but, GNU Go need a GUI.
then, qGo(QT 3) or Quarry(GTK+ 2) will be needed.

GNU Go : http://www.gnu.org/software/gnugo/
qGo : http://sourceforge.net/projects/qgo/
Quarry : http://home.gna.org/quarry/

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