The Many Faces of Go, version 11.0

"The Many Faces of Go, version 12", two time gold medalist at the ICGA 2008 computer go championship, is now available as free trial download. Buy it to get registration keys to unlock the full functionality.

"The Many Faces of Go, version 11" (released in 2002) was the 2002 World Computer Go Champion, 1998 World Computer Go Champion, and ten time US Computer Go Champion. It is one of the strongest Computer Go opponents in the world, and has many other great features including an integrated IGS client so you can play on the internet. A sophisticated set of go problems and a Joseki tutor help you improve your game.

System requirements: IBM-PC or compatible, Pentium or faster, Windows 95, 98, ME, NT, XP, 2000, or Vista, 64 MB main memory. 32 MB hard disk.

Buy or upgrade The Many Faces of Go

Many Faces of Go screenshot

Download a free 9x9 go program based on The Many Faces of Go.

Major New Features in Version 11

Version 11 Features:

Version 10 Features:

How To Buy It

The most recent computer go engine (11.0) is available in Japan, as "AI IGO", with a Japanese user interface for Windows or Macintosh. This is one of the best selling go programs in Japan.

You can play against "The Many Faces of Go" on the internet at IGS or NNGS. It uses the name "ManyFaces" on both servers. The version on IGS might talk to you. Give it a try. It can also remember simple facts and repeat them.


Go ratings for amateurs are on a scale that starts around 25 Kyu for beginners, goes to 1 kyu, then 1 dan, then 6 dan or so for the strongest players. Most people who are serious about studying the game, and have stronger players to play with, can get to 10 kyu in about a year, and 1 dan in 3 to 5 years. American (AGA), Japanese, and NNGS ratings are a little weaker than ratings in China, Taiwan, Korea, Europe, and IGS.

Go programs are hard to rate accurately, since they each have areas of strength, and other areas of weakness compared to people. So far no one has made a go program that can learn from its mistakes, so once someone has played a few games against a program, they can change the handicap against it by several stones.

Many Faces of Go has a 6 Kyu diploma from the Japanese Nihon-Ki-in, based on test games against rated Japanese players and some sample play against a 9-dan professional.

Many Faces maintains a rank of around 10 Kyu on NNGS, based on hundreds of games against many different players.

Known Bugs, Incompatibilities, and issues in Version 11.0

Known Bugs, Incompatibilities, and issues in Version 10.0

Popular suggestions for future versions. No guarantees that any of these will be in the next version, but this is what I am thinking about working on.

Click here to send mail to report bugs in version 11.0, or to suggest new features for the next version.

Older Versions

I've been working on this go engine for a long time, and it has appeared in many earlier products:

Other Information About The Many Faces of Go

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