A problem

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rhwocns
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A problem

Post by rhwocns »

This is art. pretty good. top of my collection.
Click Here To Show Diagram Code
[go]$$c
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . , . . . . . . |
$$ | . . . . O O O O . . . . . |
$$ | . . . O X X X X O . . . . |
$$ | . . . O X O O X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O . . . . O . . . . |
$$ +---------------------------+[/go]
Black to
F1, H1, G1, E1.
or
F1, E1, G1, H1.

all stones are alive. and then, black's turn.
Click Here To Show Diagram Code
[go]$$
$$ . . . . . . . . . .
$$ . . . . . . . . . .
$$ . . . O O O O . . .
$$ . . O X X X X O . .
$$ . . O X O O X O . .
$$ . . O X . . X O . .
$$ . . O X . . X O . .
$$ . . O O X X O O . .
$$ -------------------[/go]

Code: Select all

(;GM[1]FF[4]SZ[13]CA[UTF-8]AW[di][dj][dk][dl][dm][eh][fh][gh][hh][ii][ij][ik][il][im][fj][gj]AB[ei][ej][ek][el][hi][hj][hk][hl][gi][fi];B[fm](;W[hm];B[gm];W[em])(;W[em];B[gm];W[hm]))
by 권오민 5p
From his book 신기묘수
Last edited by rhwocns on Thu Sep 08, 2022 3:08 am, edited 7 times in total.
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jlt
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Re: A problem

Post by jlt »

?
Click Here To Show Diagram Code
[go]$$c
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . , . . . . . . |
$$ | . . . . O O O O . . . . . |
$$ | . . . O X X X X O . . . . |
$$ | . . . O X O O X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O 2 1 3 . O . . . . |
$$ +---------------------------+[/go]
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Cassandra
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Re: A problem

Post by Cassandra »

jlt wrote:?
!!!
Click Here To Show Diagram Code
[go]$$c
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . , . . . . . . |
$$ | . . . . O O O O . . . . . |
$$ | . . . O X X X X O . . . . |
$$ | . . . O X O O X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O O X X 4 O . . . . |
$$ +---------------------------+[/go]
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)
John Fairbairn
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Re: A problem

Post by John Fairbairn »

This is the problem that famously stumped Yi Ch'ang-ho.
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CDavis7M
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Re: A problem

Post by CDavis7M »

Click Here To Show Diagram Code
[go]$$c
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . , . . . . . . |
$$ | . . . . O O O O 1 . . . . |
$$ | . . . O X X X X O . . . . |
$$ | . . . O X O O X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O X . . X O . . . . |
$$ | . . . O . . . . O . . . . |
$$ +---------------------------+[/go]
I didn't get to 1 kyu on Fox for no reason.
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Knotwilg
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Re: A problem

Post by Knotwilg »

I also recognized this problem immediately. One of the most famous and incomprehensible go problems.
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CDavis7M
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Re: A problem

Post by CDavis7M »

rhwocns wrote:by 권오민 5p
From his book 신기묘수
If you don't mind sharing, how did you come across the book? Did you purchase it online?
rhwocns
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Re: A problem

Post by rhwocns »

CDavis7M wrote: If you don't mind sharing, how did you come across the book? Did you purchase it online?
This is a Korean book, but it's out of stock in Korea, so it's hard to find. there are occasional second-hand deals, but only in Korea. I don't have it either. sorry.
Last edited by rhwocns on Thu Sep 01, 2022 7:34 am, edited 1 time in total.
Kirby
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Re: A problem

Post by Kirby »

I have the book:
Image
As you can see, the problem is on the front cover. There are 70 problems in total, with 281 pages of content. I have done a handful of problems from this book - usually the correct answer is not my first intuition.

It also has a CD, which I have never used. But upon closer inspection, I see that the CD says 인공지능 문제풀이 프로그램 - Artificial Intelligence Problem Solving Program. This book was before AlphaGo, but it might be interesting to check out.
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Re: A problem

Post by Kirby »

FWIW, I also have the second book:
Image
It also has 70 problems, but wraps up in 275 pages.

---

Regarding where to find the books, I still see them listed on Kyobo.
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