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NameSizeDate Added

Corner based

1394
Corner based problems. See also "Side based", "Floating", "Whole Board Positions" and "Giant".
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Side based

989
Side based problems. See also "Corner based", "Floating", "Whole Board Positions" and "Giant".
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Encyclopedia of Life and Death - Easy

882
Cho Chikun’s encyclopedia of life and death part first – elementary problems
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Amateur Game

802
Problems taken from real amateur games. These can often prove instructive as most of us are still amateurs, and the situations that arise in such games are relevant to our experience.
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Self made

632
Problems made by the goproblems users themselves, with no book or other players inspiration.
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Whole Board Positions

347
Real game problems where the moves must be played according to the rest of the board. See also "Corner based", "Side based", "Floating" and "Giant".
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Middle based

306
Middle based problems. See also "Side based", "Corner based", "Whole Board Positions" and "Giant".
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Game based

173
Problems based on game positions
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4x4 problems

135
You can't play on a 4x4 board, but there are some nice problems. Solving them, you always have to look after the "best result"; that means, a win by two points is better than a win by one, and even a loss by three is better than a loss by two (and therefore the solution). This is a bit unusual, of course, but since there is only a limited number of interesting positions, this is a natural way to increase this number. Please note also that all problems use japanes rules.
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Go Seigen Tsumego

134
A collection of 142 problems created by Master Go Seigen 9p, and out of which problems No.1 to No.110 are solved and explained in detail by his student O Rissei 9p.
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Giant

122
Non-real game problems that encompasses an entire board, or at least the majority of it. Otherwise known as 'chinrou.'" See also "Side based", "Middle based", "Corner based" and "Whole Board Positions".
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9*9 games

122
Here you can find a problem: find the sequence leading you to victory on 9*9 board.
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Yi Ch'ang-ho's Selected Life and Death Go Problems Book 6

122
Volume 6: ISBN: 7-8105-1526-8
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Multiple Choice

121
The possible moves are listed for the problem solver as choices.
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Yi Ch'ang-ho's Selected Life and Death Go Problems Book 1

121
Lee Chang-ho's Selected Life and Death Go Problems (李昌镐精讲围棋死活,
Yi Chang-ho Jingjiang Weiqi Sihuo) is a set of six Chinese, go problem books. Each of these volumes includes 123 life and death problems.
In volumes 1-3, the first 60-problems are White/Black to live; the last 63-problems are White/Black to kill.
In volumes 4-6, the first 52-problems are White/Black to live; the last 71-problems are White/Black to kill.
Each page has one problem with the solution on the back w/ accompanying Chinese text. The problems become more difficult as one proceeds through the set of six books. The second half, to kill problems, of each book seems to be noticeably harder than the first half, to live problems.

Volume 1: ISBN: 7-8105-1521-7
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Yi Ch'ang-ho's Selected Life and Death Go Problems Book 2

121
Volume 2: ISBN: 7-8105-1522-5
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Yi Ch'ang-ho's Selected Life and Death Go Problems Book 3

120
Volume 3: ISBN: 7-8105-1523-3
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Yi Ch'ang-ho's Selected Life and Death Go Problems Book 5

119
Volume 5: ISBN: 7-8105-1525-X
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Yi Ch'ang-ho's Selected Life and Death Go Problems Book 4

117
Volume 4: ISBN: 7-8105-1524-1
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Pro Game

116
A position from a professional game. The classical way to learn.
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Encyclopedia of Life and Death - Medium

111
Cho Chikun’s encyclopedia of life and death part second – intermediate problems
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Xuan Xuan Qijing

75
This classic Chinese text dates from the fourteenth century, originally published in 1347 by Yan Defu and Yan Tianzhang. The problems take fanciful and historical aspects, with themes relating to stories and events. For example, in the 'Mother of Seven Sons' problem, the seven sons refers to seven white stones at the core of the problem. Known in Japanese as 'Gen Gen Go Kyo.'
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7x7 Endgames

73
Endgames on a 7 by 7 board.
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GuanZiPu

53
This ancient chinese text contains 1454 challenging problems. It's know as KanZuFu in Japanese. The English translation is roughly 'Manual of Endgame Positions.' However, these aren't endgame problems in the typical sense: they're problems wherein if you could solve one in a game, the game would end, as you'd have just killed a large group or saved some crucial stones.

The original book was split into three parts, a start, a middle, and an end. In referencing these problems, I've indicated from which part originated the problem, along with the problem number.

More information at sensei's.

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L-Group

44
Problems dealing with the basic 'L' shape in the corner (or derivatives of). L* denotes the L group without the corner stone.
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Classic Life and Death

44
Where all the basic, elementary and classical life and death to be included. Generally those common life and death. by xinwen
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Hideo Otake — Opening Theory Made Easy

41
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Tripod

22
Creating and handling the tripod group
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Carpenter's Square

21
Many variations stem from this seminal formation.
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Large L-Group

19
Problems dealing with the basic large 'L' shape in the corner (or derivatives of). Large L* denotes the Large L-group without the corner stone.
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1035 tsumego part1 No.495

18
one problem but seperate to two problems in goproblems.com #14079 by kaf #14096 by tails #597 by adum
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Japanese People's Go Playing Style

16
It's our country Japan's playing style. Apologies if you feel it's weird.
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Famous Problems

14
Special problems that stem from professional games or other specifically designed problems. For example: Shusaku's ear-reddening move and Dosaku's Nose hit.
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Hikaru No Go

14
Situations that come from the popular Japanese manga/anime series Hikaru No Go.
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The Top Ten Life-and-Death Problems

14
As selected by 40 professional go players
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Study Japanese sweet language!

14
This group contains of Japanese characters, Japanese language, and Japanese culture. When you visit Japan, please enjoy the time with the OMOTENASHI :)
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Igo Hatsuyo-Ron

13
This ancient Japanese tsume-go book was orginally crafted by Meijin Dosetsu Inseki in 1713. The problems contained therein tend to be extraordinarily hard. 'Hatsuyo' can be translated as 'discover - yang,' where 'yang' relates to 'yin-yang.' More information at Sensei's Library.
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Maeda

11
Recent classic problems by Maeda Nobuaki.
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Korean problem academy

11
The collection of problems named Korean problem academy
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J-Group

8
Problems dealing with the basic 'J' shape in the corner (or derivatives of).
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Help Thy Opponent

8
Mostly problems in which you're allowed to make a move instead of your opponent. (Should auto-imply Instruction-Required, Strange and Fun)
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Reverse sente basics

8
Endgame problems where preventing opponent's sente play is the key consideration.
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Irregular go's handicap games group p-p

8
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S and S Tesuji Dictionary

7
This two-volume tesuji dictionary was originally published by Kensaku Segoe and Go Seigen in 1971. For what I think were political reasons, it fell out of print, but has recently been reprinted. It's filled with challenging and fascinating tesujis that look like they've been lifted from games, all organized by general theme.
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Zalesak Tsumego

7
This is a collection of Tsumego compiled by A. Zalesak.
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mamegoma3

6
܂߃S}
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GO GO GO GO!

5
Igolatte's group GO GO GO GO!
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Black board

5
The most stones on the boards are Black. Why did I create this group? Coz I like Black people.
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Let me fix the 4 eyed position.

4
The title tells you everything.
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Zely problems

4
Problems from my imaginary player Zely.
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Zelypedia problems Zerogou

4
Problems from my imaginary go book Zelypedia problems Zerogou.
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Zezezezely p-p

4
Problems from my imaginary go book Zezezezely p-p.
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Zeh, Black IME

4
The problems of this group include IME shaped Black stones. See also, Zely problems, Zelypedia problems zerogou, and Zezezezely p-p.
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Gongo no go

4
The group that named Gongo no go. (Funny parody, not plagiarism lol)
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IGS Art Gallery

3
Solutions to problems found in the IGS art galleries.
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Weiqi Life and Death 1.000 Problems

3
It is 385-pages in length with 1000-problems & solutions.
The problems are categorized into two main sections:
tsumego and tesuji;
then further broken into 10 and 15 thematic subsections respectively.
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9~9 endgame

3
ǂȂ
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The people's deactivated position museum

2
"Instruction Required" can make the dead position reborn. I want to help the dead problems.
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gogalar gomidensha6's Scrapped Hikaru No Go Group

2
It's not insulting. It's just The Scrapped Hikaru No Go collection. As I said before, I ain't Irregular go. I just love to watch scrapped vehicles on the internet.
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gogalar rules

1
There are many go rules Chinese rules, Japanese rules, Korean rules, American rules, AGA rules and New Zealand rules. I wanted to create my own rules. 1. Not to recapture and count ko even if there are ko threats. 2. Scoring are New Zealand rules included. 3. If one player passes with no intersections to play, if another player passes after making the territory unconditionally, the faster territory made player wins. 4. You can use Irregular boards.
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bougalar boudensha6's Irregular board.

1
bougalar boudensha6's Irregular board.
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