It is currently Thu Oct 31, 2024 4:18 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 45 posts ]  Go to page 1, 2, 3  Next
Author Message
Offline
 Post subject: The most difficult problem ever. Igo Hatsuyoron 120
Post #1 Posted: Wed Aug 03, 2011 6:58 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
... has been published:

http://www.brett-und-stein.de/09-Alle_T ... -BSV18.php

http://www.amazon.co.uk/most-difficult- ... Cbr%20/%3E

If you ever wanted to know, why this problem has not been solved by professionals yet, you can find the answer in this book.

+ + + + + + + + + + + +

A short overview:

The Problem p. 7

Our Solution p. 8
... in one diagram.

Igo Hatsuyoron – Re-Evaluation by Amateurs p. 9
Introduction.

The Reference Path p. 11
In this chapter, we explain the professionally confirmed sequence with the strongest moves for both sides. White wins by two points !!!

Variations of the Reference Path p. 19

Key Results p. 51
In this chapter, we present in chronological order the main results, and findings.

The Decisive Moment p. 63
This chapter explains, in detail, the move (an Oki), which lead to the refutation of the known (professional) solutions.

Hidden Aspects of the Oki p. 69
In this chapter, we examine various aspects of the Oki, which we think could have been responsible for the effect that the professionals did not use it in the decisive moment.

Guzumi at Top Right p. 75
This chapter explains the consequences of the move (a Guzumi), overlooked by professionals, which we think gives the victory back to Black.

Additional Results p. 87
In this chapter, we consider some earlier commentaries concerning the Seki in the lower right corner.

After the Guzumi – Our Solution p. 91
In this chapter, we explain the main variations after the Guzumi in the upper right corner. Our solution ends with three points for Black.

About Approach-Move Liberties p. 119
This chapter explains an effect, which is important in conjunction with the Guzumi.

About Hanezeki p. 123
This chapter explains the problem's element in the lower right corner.

A Summary of Our Solution p. 127
We wrote this synopsis primarily to give an outline of our solution, but also to highlight some of the problem's main features and interdependencies, in an attempt to clarify the structure.

Acknowledgements p. 135

References p. 137

Postscript p. 138
After the book was in final proofs, we heard about a recently published book, "Research on Weiqi Fayanglun", by Cheng Xiaoliu 6p. This is an updated and extended edition of his 1988 book "Weiqi Fayanglun New solutions".
It was too late to integrate his findings, concerning problem 120, in our book, so we give a brief overview about his results here. Some more of our findings (but not all !!!) can be called "professionally validated" now.

Glossary p. 139

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)


This post by Cassandra was liked by: Akura
Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #2 Posted: Thu Aug 04, 2011 5:30 am 
Lives in gote

Posts: 408
Location: Poland, Gliwice
Liked others: 127
Was liked: 94
Rank: EGF 3kyu
Universal go server handle: tommyray (1d/2d)
Is it available in any e-format? Best would be Smartgo but PDF or any other non interactive format would be good enough too.

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #3 Posted: Thu Aug 04, 2011 8:51 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
lobotommy wrote:
Is it available in any e-format? Best would be Smartgo but PDF or any other non interactive format would be good enough too.

No, it isn't yet.

Gunnar Dickfeld from Brett-und-Stein publishing house is in talks with Anders Kierulf to get an idea about time, effort, and conditions, to have some of his books published as e-book.

But I fear that this will become a long-term project.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #4 Posted: Thu Aug 04, 2011 9:20 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
If you are looking for some SGF-files, these can be found either on our website or at

http://www.harryfearnley.com/go/trmdpe/ ... -2009.html

The commented SGF-file presents our knowledge as of mid 2008, but should be more than sufficient to understand the problem, especially the Main Path and its variations.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #5 Posted: Tue Jul 30, 2013 12:48 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
lobotommy wrote:
Is it available in any e-format? Best would be Smartgo but PDF or any other non interactive format would be good enough too.

The third edition of our book (with four times the volume of the first edition) has become part of Anders Kierulf's library of SmartGo Books recently:
http://www.smartgo.com/en/booksbypublisher.htm#tr

Any comments, questions, and suggestions might be posted here in this thread or in this other one:
viewtopic.php?f=15&t=342

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #6 Posted: Mon Aug 05, 2013 2:18 am 
Dies with sente

Posts: 92
Location: Zimbabwe
Liked others: 3
Was liked: 18
Rank: 6 - 9k
KGS: bleep
Tygem: rbleep
IGS: rbleep
I'm still having trouble with some of the easiest problems ever created. The one I find trickiest is this one:

Click Here To Show Diagram Code
[go]$$B 19x19 board
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Attachments:
Blank.sgf [56 Bytes]
Downloaded 1788 times

This post by bleep was liked by 2 people: Bonobo, Txewì
Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #7 Posted: Fri Aug 09, 2013 10:24 pm 
Dies in gote

Posts: 39
Location: The Pacific Island of Alameda
Liked others: 1
Was liked: 10
Rank: 6 kyu
Is there a way to purchase this without dealing with Spamazon? If so, I would like to order a copy.l

chiwito

_________________
I'm always looking for any go publications that i don't have, in any western language. Wanna trade or sell some?

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #8 Posted: Wed Feb 11, 2015 7:22 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
As preliminary information appending the current state of the first chapter of a book that should be widely available (in paper) in the foreseeable future.

From the book's cover:
The most difficult of all Go problems, created by Inoue Dosetsu Inseki (1646 - 1719), has still not been solved by professional Go players.
“How do you eat an elephant ?” is the usual management consultant’s reply, when being asked how to manage a project that is much too large to be treated as one single entity.
This book comes across with 120 slices, cutting down the problem in size.
We present, and explain, many small aspects of Igo Hatsuyôron 120 as (more or less simple) individual problems. Hopefully, this will make the reader fit to put together the entire puzzle on his own (to be honest: with some assistance, of course) in the very end, i.e. solving the most difficult problem ever.



Further information will be gladly given here. Or via the email-address that is given in the file.


Attachments:
HowDoYouEatAnElephant_Chapter1.pdf [1.3 MiB]
Downloaded 2055 times

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

This post by Cassandra was liked by: Boidhre
Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #9 Posted: Fri Feb 13, 2015 6:52 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
Update:

I am delighted that two publishers intend to include "An Elephant in Slices" in their library:

-- David Ormerod from GoGame Guru (in paper), and
-- Anders Kierulf from SmartGo Books.

Unfortunately, it will take some time until the publication.

-- David has several other books to come in his publishing pipeline already, so the "Elephant" must queue up.
-- Transformation into the SmartGo Books format will also last a while.

So far, some teachers, and players up to 6d, liked the idea that is behind the pedagogical concept of the book.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #10 Posted: Tue Feb 24, 2015 1:19 pm 
Lives with ko
User avatar

Posts: 129
Liked others: 5
Was liked: 14
Rank: KGS 4k
Wow, it is really cool that Igo Hatsuyoron has been published in English. I wonder how many English speaking players are really strong enough for this book though.

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #11 Posted: Tue Feb 24, 2015 1:44 pm 
Oza
User avatar

Posts: 2777
Location: Seattle, WA
Liked others: 251
Was liked: 549
KGS: oren
Tygem: oren740, orenl
IGS: oren
Wbaduk: oren
This is about just one problem from igo hatsuyoron. So far the only book for more problems is a fairly old one from Yutopian.

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #12 Posted: Tue Feb 24, 2015 1:45 pm 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
The "Elephant" is an introductory book to the problem, so most of the problems are not so very high level.

Quite the contrary, there is the risk that some readers might find some easier problems somewhat boring. As boring as checking the 100 blue puzzle pieces for creating the sky one by one, but from which each single one is necessary. And in the end they will enjoy the whole picture.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #13 Posted: Tue Feb 24, 2015 1:50 pm 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
oren wrote:
This is about just one problem from igo hatsuyoron. So far the only book for more problems is a fairly old one from Yutopian.

Cho HyeYeon 9p will publish an English translation of the entire Igo Hatsuyôron in her "Baduk Classic" series some when in the future.

Our publications are only about problem 120, the most difficult problem ever created.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #14 Posted: Sun May 10, 2015 6:18 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
We dedicated a website to Inoue Dosetsu Inseki's masterpiece, containing all the results of our investigations in the problem:

http://igohatsuyoron120.de/index.htm

We will be pleased to respond to suggestions, questions, and comments, here in this thread.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #15 Posted: Tue May 12, 2015 7:33 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
If you ever wanted to own a hardcover editon:

Image
http://www.lulu.com/shop/thomas-redecke ... 68688.html

Image
http://www.lulu.com/shop/thomas-redecke ... 68699.html


+ + + + + + + + + + +

@ admin:
I earn nothing with the books, so hopefully this post is not contrary to the forum rules.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #16 Posted: Tue May 12, 2015 4:20 pm 
Oza
User avatar

Posts: 2221
Location: Germany
Liked others: 8263
Was liked: 924
Rank: OGS 9k
OGS: trohde
Universal go server handle: trohde
Cassandra wrote:
[..]

@ admin:
I earn nothing with the books, so hopefully this post is not contrary to the forum rules.

Just the opinion of a user: This is a Go forum, and I suppose we all are interested in Go literature, so, IMHO, it should be OK even if you’d earn something :-)

Also, I’d actually wish that people who write good Go literature earn good money by selling their books!

Cordially, Tom

_________________
“The only difference between me and a madman is that I’m not mad.” — Salvador Dali ★ Play a slooooow correspondence game with me on OGS? :)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #17 Posted: Tue May 12, 2015 11:10 pm 
Judan

Posts: 6230
Liked others: 0
Was liked: 793
Books may be announced in the Go Books forum. What are the differences to the previous print version?

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #18 Posted: Tue May 12, 2015 11:38 pm 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
RobertJasiek wrote:
Books may be announced in the Go Books forum.

These can be understood as a supplement to the website. It's not the other way round.

RobertJasiek wrote:
What are the differences to the previous print version?

Which edition of our books do you mean ?

There is only a publicly available printed edition, from Brett-und-Stein-Verlag, as of 2011.

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #19 Posted: Tue May 12, 2015 11:56 pm 
Judan

Posts: 6230
Liked others: 0
Was liked: 793
Yes, this is the latest printed edition I have.

http://senseis.xmp.net/?TheMostDifficultProblemEver

Top
 Profile  
 
Offline
 Post subject: Re: The most difficult problem ever. Igo Hatsuyoron 120
Post #20 Posted: Wed May 13, 2015 12:21 am 
Lives in sente
User avatar

Posts: 1312
Liked others: 14
Was liked: 153
Rank: German 1 Kyu
RobertJasiek wrote:
Yes, this is the latest printed edition I have.
http://senseis.xmp.net/?TheMostDifficultProblemEver

Reply in detail will last a bit ...

However, if you are in a hurry:

-- Please refer to the table of contents, especially to the year numbers (and the page count of the chapters):
http://igohatsuyoron120.de/2015/0005.htm

-- Please refer to the introductory chapter "Igo Hatsuyōron 120 - Re-Evaluation by Amateurs", wherein you can find the timeline of the development of our work:
http://igohatsuyoron120.de/2015/0011.htm

_________________
The really most difficult Go problem ever: https://igohatsuyoron120.de/index.htm
Igo Hatsuyōron #120 (really solved by KataGo)

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 45 posts ]  Go to page 1, 2, 3  Next

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group