The Many Faces of Go

The Many Faces of Go, version 11.0

"The Many Faces of Go" is 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, or 2000, 64 MB main memory. 32 MB hard disk.

Many Faces of Go Screen shot

Download The Many Faces of Go.

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

Major New Features in Version 11

Stronger go player, especially at life and death reading.
Sound
Much better go problems
Internet Go Client
Game score graph
ctrl-click to go directly to a move
Rotate the go board
Much better computer problem solver
More commented games

Version 11 Features:

Great graphics. Beautiful and adjustable 3-D slate and clamshell stones with shadows, and realistic wood grain. You can rotate the board, or add coordinates. Won the "Best Design" award at the 1991 World Computer Go Championship.
Sound. Realistic clicks and capture sounds, and sounds for pass, IGS match, etc.
Strong go player. 10 levels of play, from about 20 Kyu to about 8 kyu. 1998 World Computer Go Champion.
Go tutorial. Over 100 screens of text, examples, and simple problems teach you the rules, elementary tactics and strategies.
Go problems. Over 2000 go problems for all levels of player. The program selects problems for you based on your strength, and tracks your strength as you solve them. Problems appear in different orientations and colors to aid learning. Go problems can be upated over the internet, and it is easy for you to add additional problems or problem sets.
Play go on the Internet. An Internet Go Server is built in so you can play go on the internet with the familiar Many Faces interface, and use its powerful editing features to comment your games.
Move suggestions. At each move it can show suggestions for next move, by category (such as attacking, invading, endgame, etc). Can also show liberty counts and/or group strengths for all groups. The computer can show its lookahead while it is thinking.
Game Score Graph. Graph your score at each move. Click on a move to go to that position.
Move hints. Suggests your best move.
Move explanations. Can explain why it made a move or suggested a move for you.
Computer solving of go problems. The computer can solve life and death problems in yor games to help you improve.
Thousands of games to play through. Hundreds of professional games with commentary. About a thousand uncommented professional game records, organized by tournament. About a thousand commented amateur games from the Go Teaching Ladder. Over 4,000 uncommented very strong amateur games.
Powerful Game Editor. Can present for review any game in the standard Ishi format (.go) or the popular Smart Game Format (.sgf). When reviewing a game you can try to guess the next move. A wide variety of marks are supported. You can add commentary or variations. Use ctrl-click to move directly to any move in the game. Insert, delete, or drag stones to new positions. Great for recording your own games for later study.
Can play and score using all major rule sets (Japanese, Chinese, GOE, and American).
Can play either color, or serve as an electronic go board for two people.
Can give or receive a handicap.
Fuseki Libraries. Libraries of opening sequences on the whole board from professional games. At each position, shows the popularity of each next move. Two libraries are included, one which includes all moves from about 5700 professional games, and one which includes an additional 29,000 strong amateur games.
Joseki Tutor. Over 45,000 move library of standard corner sequences is available for browsing or testing. Includes joseki, near-joseki, trick plays, and responses to many bad moves. Use it to look up variations, or to test your joseki knowledge.
Play by modem. Uses the Computer Go standard modem protocol for play with any other go program that supports this protocol. Either player can make moves for either color,allowing discussion or teaching games. Players can type messages to each other during the game.
Printing of go diagrams or full games with numbered moves.
On-line manual with information on history, tournaments, professionals, etc.

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.

Rating

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.

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Older Versions

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

Between 1981 and 1987, various versions were given away free to friends, running on HP-1000, Vax, and PA-RISC. An old HP-UX free version is still available on some web sites, called xgo.
September, 1988. Cosmos, the Computer Go Partner for the IBM-PC. One upgrade version of Cosmos was released in 1990.
The source code for the final version of Cosmos was given to the Spec benchmark committee, and is now 099.GO, one of the SpecInt95 benchmark suite. Hundreds of compiler writers around the world are tuning their compilers to make my go program run faster :-) Spec's description of the program.
The Many Faces of Go had four earlier releases (7.0x, 8.0x, 9.0x, and 10.0)
Igowin is a free 9x9 only Windows-95/98/NT version of Many Faces of Go, that plays fast, tracks your go strength as you improve, and learns from its mistakes so it never loses the same way twice. It includes the full Many Faces of Go tutorial, and an on-line manual with lots of information about the game. Download it here.
Igo was a 9x9 only DOS version of Many Faces of Go, with a deliberately dumber engine. It includes the Go tutorial from The Many Faces of Go, and has the same great graphics. It is free, and intended to help beginners learn the game.
Go simulator was a version of the first release of The Many Faces of Go, released in Europe with a 3 language manual and box.
An early version of The Many Faces of Go was sold in Korea, with a Korean box and manual.
A version for EO and Intel Penpoint OS handheld computers.
Go programs based on the Many Faces of Go engine are on sale in Japan and Korea, for IBM-PC, Mac, and Sony Playstation.