It is currently Thu Apr 25, 2024 9:10 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 452 posts ]  Go to page Previous  1 ... 13, 14, 15, 16, 17, 18, 19 ... 23  Next
Author Message
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #301 Posted: Sat Jul 26, 2014 2:27 am 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
RBerenguel wrote:
I have a shogi board, "The Art of Shogi" and even a computer opponent on my iPad (and a tsumeshogi app on my old iPod touch.) But man, the game is "hard." Hard to see anything, hard to follow the opening patterns. It's been almost 2 years on hold, because I don't have that much free time and I try to focus in "just one board game," so no tsumeshogi, no hex, I just to tsumego and the like, at least for the time being :) I'd be glad to read your shogi endeavours too here! (btw, there's a subreddit for shogi, but it's 99% dead.)


I ordered "Shogi for Beginners" (from John Fairbairn, who could have guessed ; ) ) and "Joseki at a Glance" (Josekis are openings, like in chess, if I'm not mistaken), those two should - hopefully - bring me to a level where I don't lose against the weakest bot on 81dojo.com ^^

I feel that Josekis in Shogi are even more important than openings in chess. Because of the move-peculiarities of the Shogi pieces (quite a few of them can't move backwards), you have to be really careful where to move them.
I attended a Shogi event with two professional Shogi players (and got to play one of them - yay!) and the strongest amateur player there (a 2-dan) played a show match against one of them. Essentially he lost because he moved his King in the attack line of his opponent's Joseki, which he didn't know.
Later on the pro gave him a book he had written, where he explains this Joseki ^^ (Sadly it's all in Japanese.)

Another strong player (got awarded a 5-dan diploma in his prime but stopped playing) told me, when I understand everything what's in "Shogi for Beginners" I could be already Shodan ^^

Then I do a lot of one- and three-move Tsumeshogi with Anki, thanks to you ; )
The internet is so kind as to present me around 100 one-move- and almost 900 three-move-problems (no scans or such as far as I'm aware).
I finished the one-move-problems three times by now and solved a quarter of the three-move ones. By the way for those of you who know chess: three-move-problems actually mean three moves in total, this would be a mate in two in chess. A five-move-problem in Shogi is a mate in three in chess.

As with Go I'm more the study type and play less. Once a week I play a couple of games with a friend and occasionally I play against a Hamster (http://www.hozo.biz/shogi/) : D Sadly the handicap system is completely weird in Hamster-Shogi (it doesn't follow the usual pattern), so I can't learn proper handicap Josekis and such.

So much for my Shogi endeavours =D

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #302 Posted: Fri May 01, 2015 8:34 am 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
Uh, it started again.

After some Shogi and some serious chess (slowly but surely I have as many chess books as I have Go books...), I'm back to Go. Even dusted my Goban from the cellar this day and replayed a Go Seigen game ("Final Summit" - Game 1). Trying to get into a Tsumego routine, too - GGPfB as of now (rusty, rusty ^^").

On KGS I'm at 1-kyu again, but I mostly lose against human players and only my wins against bots help me keep this rank. On the other side I'm a mighty strong 1-dan on Tygem, so I'm satisfied with this feeling of fake accomplishment ; )

So far~

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #303 Posted: Thu May 07, 2015 12:36 pm 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
Since RBerenguel posted his approach of doing Tsumego via a SRS (i.e. Anki: viewtopic.php?f=48&t=10416), I wanted to test that myself. I already did so with Shogi and chess problems and now I started transcribing Go problems, too.

I finished the first two volumes of GGPfB a couple of days ago and even managed to get a few problems wrong (careless, careless me). Started the third volume today and generally aim to do 50 new problems a day (plus whatever I have to review). The plan for now is to complete the whole series (completion means repeating the cards/problems until they become "old" in Anki) and then go heavy on Tesuji problems since my main weakness is still the middlegame and fighting. This probably includes Tesuji, Get Strong at Tesuji and the Yi Ch'ang-Ho Tesuji series - we'll see when I get there.

Regarding "Final Summit": I replayed the 7th game today; easily one of my favourite games in this series. Go Seigen makes winning look so easy. After that I will test my own advice and start replaying Go Seigen's complete legacy. I took the compilation logan kindly put together and plan to quickly go over up to ten games a day. That's something I would like to do anyway, realisticly it seems three games a day would already be great - time-wise.

I also wanted to post a 5H-game I played against a 4-5d recently but I forgot the right order of moves in a lot of situations : ( Suffice to say, he got the better of me and by the start of the endgame we were roughly even in points. Aside from maybe playing too solidly, I also missed the bigger picture once and defended incorrectly against a probe - cost me quite some points since some cut-off stones could now connect to a weak-ish group of his, making life for both. The game was quite comfortable for White then. Still happy with the game since I didn't get demolished from start to finish : )

_________________
My "guide" to become stronger in Go


This post by SoDesuNe was liked by: RBerenguel
Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #304 Posted: Tue May 12, 2015 11:57 am 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
This one took waaaaay too long...

Click Here To Show Diagram Code
[go]$$B Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X . |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X . . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #305 Posted: Thu May 14, 2015 1:44 pm 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
I'm still uber bad when it comes to unorthodox play.



After the overplay in the top-right it all went south. Funny though, that in the moment I cut, I realized he just needed to extend and I was in trouble. I guess, I should have tried to live in the center later on, but I couldn't see any good moves. Unorthodox play really throws me off. (Yes, I could have captured the group at the bottom.)

Luckily I won two games on Tygem after that. Faith restored.

Tomorrow I'll finish GGPfB vol. 3 and will start the last one.

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #306 Posted: Fri May 15, 2015 7:44 am 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
What d'you do, when you lose some 40 points in a Ko fight? You just kill a quarter of the board and force your opponent to resign.


_________________
My "guide" to become stronger in Go


This post by SoDesuNe was liked by 2 people: daal, RBerenguel
Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #307 Posted: Fri May 15, 2015 10:48 am 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
SoDesuNe wrote:
This one took waaaaay too long...

Click Here To Show Diagram Code
[go]$$B Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X . |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X . . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


1-2-3 reading, baby!

Trying to get more liberties by connecting one of black's obvious weakpoints fails:
Click Here To Show Diagram Code
[go]$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 2 |
$$ | . . . . . . . . X O O X 3 |
$$ | . . . , . . . . . O X 1 . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 4 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


So play where the opponent played!

Click Here To Show Diagram Code
[go]$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 1 |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X 3 . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 2 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #308 Posted: Fri May 15, 2015 11:57 am 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
Click Here To Show Diagram Code
[go]$$B Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.


This post by Bill Spight was liked by: SoDesuNe
Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #309 Posted: Sat May 16, 2015 2:13 am 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
Kirby wrote:
SoDesuNe wrote:
This one took waaaaay too long...

Click Here To Show Diagram Code
[go]$$B Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X . |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X . . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


1-2-3 reading, baby!

Trying to get more liberties by connecting one of black's obvious weakpoints fails:
Click Here To Show Diagram Code
[go]$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 2 |
$$ | . . . . . . . . X O O X 3 |
$$ | . . . , . . . . . O X 1 . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 4 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


So play where the opponent played!

Click Here To Show Diagram Code
[go]$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 1 |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X 3 . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 2 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Righty-right! =)


Bill Spight wrote:
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)


My reasoning: By connecting N6 White cannot decrease my liberties via the throw-in at M4 (I get an eye). So I have ample time to connect all my weaknesses.


It's astonishing by the way how fast my reading skill kinda vaporised. I do so badly at GGPfB vol 4, I think I'm doing even worse than I was when being around 3-kyu :o It's a good thing though that experience almost makes it up. Especially against weaker players.

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #310 Posted: Sat May 16, 2015 7:54 am 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
SoDesuNe wrote:
Bill Spight wrote:
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)


My reasoning: By connecting N6 White cannot decrease my liberties via the throw-in at M4 (I get an eye). So I have ample time to connect all my weaknesses.


Well, yeah, but the connection at M4 prevents White from throwing in there, too. :)

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #311 Posted: Sat May 16, 2015 8:15 am 
Oza
User avatar

Posts: 2401
Location: Tokyo, Japan
Liked others: 2340
Was liked: 1332
Rank: Jp 6 dan
KGS: ez4u
Bill Spight wrote:
SoDesuNe wrote:
Bill Spight wrote:
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)


My reasoning: By connecting N6 White cannot decrease my liberties via the throw-in at M4 (I get an eye). So I have ample time to connect all my weaknesses.


Well, yeah, but the connection at M4 prevents White from throwing in there, too. :)

Now, now Senbei. SDN has correctly identified the essentials of the position even if the wording could be more precise. No taunting now! :)

_________________
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #312 Posted: Sat May 16, 2015 9:20 am 
Honinbo

Posts: 9545
Liked others: 1600
Was liked: 1711
KGS: Kirby
Tygem: 커비라고해
Still an interesting question about the four marked points: why.

I don't have an answer myself, except that I verified it works. Why does it work?

That's a tough question.

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #313 Posted: Sat May 16, 2015 9:39 am 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
ez4u wrote:
SoDesuNe wrote:
Bill Spight wrote:
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)


My reasoning: By connecting N6 White cannot decrease my liberties via the throw-in at M4 (I get an eye). So I have ample time to connect all my weaknesses.

Bill Spight wrote:
Well, yeah, but the connection at M4 prevents White from throwing in there, too. :)

Now, now Senbei. SDN has correctly identified the essentials of the position even if the wording could be more precise. No taunting now! :)


Aniki, Black has no eye, which is why he needs to connect. The point is not about making an eye or preventing an eye.

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #314 Posted: Sat May 16, 2015 12:20 pm 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X b . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X a |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X d |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X c . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Okay, forget eyes, here comes the next try. This time, techniques:
Connecting any other point besides 'd' allows some sort of technique for White. 'a' and 'b' allow a snap-back after throwing in at 'c'. 'c' leads to oiotoshi after yet another throw-in from White (here at 'd'). So connecting at 'd' prevents any technique from White to create a shortage of liberties.

Any takers? : D

_________________
My "guide" to become stronger in Go


This post by SoDesuNe was liked by: Bill Spight
Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #315 Posted: Sat May 16, 2015 12:43 pm 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
Bravo, SoDesuNe, bravo! :clap:

Succinctly

A White throw-in at "d" takes away a potential Black liberty.


The reason that I think that that is an important point is that it is very general.

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.


This post by Bill Spight was liked by: SoDesuNe
Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #316 Posted: Sat May 16, 2015 1:03 pm 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
Great, thank you! : )

I guess, I sometimes take my approach to hardwire shapes into my brain (by repeating the same problems over and over again) a step too far and forget that you can solve quite a bunch with simple logical reasoning; understanding the problem behind the problem.

Maybe logical reasoning is also easier to remember or preserved longer. Seeing, how difficult GGPfB vol 4 is for me, I wonder whether long lasting Go strength has more to do with understanding than with remembering. Although these two might be hard to differentiate.

I'm looking forward to books like the Yi Ch'ang'ho series, which I solved quite heavily before my "break". Really thrilled to see how well they go now compared to before, maybe I'll find some first clues to answer my question? =)

On another note, I wanted to comment on a handicap game by Go Seigen, especially focussing on amashi and hiroi. Well, figures, I'm way to weak to do that but I nevertheless enjoyed Go Seigen's play immensely. So, for public pleasure, here it is:




I forgot, was a game won by 1 point considered a masterpiece-contender or a game lost by 1 point?

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #317 Posted: Sat May 16, 2015 4:38 pm 
Gosei
User avatar

Posts: 1585
Location: Barcelona, Spain (GMT+1)
Liked others: 577
Was liked: 298
Rank: KGS 5k
KGS: RBerenguel
Tygem: rberenguel
Wbaduk: JohnKeats
Kaya handle: RBerenguel
Online playing schedule: KGS on Saturday I use to be online, but I can be if needed from 20-23 GMT+1
Lost by 1 while giving handicap, isn't it?

_________________
Geek of all trades, master of none: the motto for my blog mostlymaths.net

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #318 Posted: Sat May 16, 2015 6:03 pm 
Oza
User avatar

Posts: 2401
Location: Tokyo, Japan
Liked others: 2340
Was liked: 1332
Rank: Jp 6 dan
KGS: ez4u
Bill Spight wrote:
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)

...

Aniki, Black has no eye, which is why he needs to connect. The point is not about making an eye or preventing an eye.

While I now understand the general point you wanted to emphasize, the full solution does involve an eye. If Black mistakenly starts with 1 below, White plays 2 and 4. Both of these plays reduce Black's liberties. After 4 White is two liberties ahead in the capturing race. If White plays 'a' instead of 4, Black is captured but White is only one liberty ahead so Black 'b' is left as a ko threat.
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X 1 . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X b |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 2 |
$$ | . . . . . . . . X O O X 3 |
$$ | . . . , . . . . . O X 4 . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X a |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black 2 below prevents both 2 and 4 in the diagram above. It simultaneously protects two of Black's connection points because of the threat to make an eye if White throws in at 3 below. White has nothing better than 2 and Black is safe after 3.
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 1 |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X 3 a |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 2 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]

Just my ¥2 worth.

_________________
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #319 Posted: Sat May 16, 2015 10:02 pm 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
ez4u wrote:
Bill Spight wrote:
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X C . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X C |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X C |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X C . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X . |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black has no eye in the corner, but has four connection points (marked). One of these points is special. Which one is it, and why? :)

...

Aniki, Black has no eye, which is why he needs to connect. The point is not about making an eye or preventing an eye.

While I now understand the general point you wanted to emphasize, the full solution does involve an eye. If Black mistakenly starts with 1 below, White plays 2 and 4. Both of these plays reduce Black's liberties. After 4 White is two liberties ahead in the capturing race. If White plays 'a' instead of 4, Black is captured but White is only one liberty ahead so Black 'b' is left as a ko threat.
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X 1 . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X b |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 2 |
$$ | . . . . . . . . X O O X 3 |
$$ | . . . , . . . . . O X 4 . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X a |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


Black 2 below prevents both 2 and 4 in the diagram above. It simultaneously protects two of Black's connection points because of the threat to make an eye if White throws in at 3 below. White has nothing better than 2 and Black is safe after 3.
Click Here To Show Diagram Code
[go]$$Bc Black to play
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X . . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X 1 |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X 3 a |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 2 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]

Just my ¥2 worth.


Click Here To Show Diagram Code
[go]$$Bc White to live
$$ +---------------------------+
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . |
$$ | . . . , . . . . . X X 1 . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . . . . X O X . |
$$ | . . . . . . , . . . O O X |
$$ | . . . . . . . . X . O X a |
$$ | . . . . . . . . X O O X . |
$$ | . . . , . . . . . O X . . |
$$ | . . . . . . . X . O X X O |
$$ | . . . . . . . X O . O X 2 |
$$ | . . . . . . . . O . O O O |
$$ +---------------------------+[/go]


If :b1: I believe that :w2: is correct. No need to sacrifice a stone at "a". :)

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

Top
 Profile  
 
Offline
 Post subject: Re: SoDesuNe paves his road to Shodan
Post #320 Posted: Wed May 20, 2015 1:55 pm 
Gosei
User avatar

Posts: 1810
Liked others: 490
Was liked: 365
Rank: KGS 1-dan
Cute little Tsumego:
Click Here To Show Diagram Code
[go]$$Wc White to play in the bottom left.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . O X X . . |
$$ | . . O O . X . O O . . . O . . X . X . |
$$ | . . . , . . X X O , . . O . X X X O . |
$$ | . . O . X . . . O . . . . . X X O O . |
$$ | . . . . . . . X . . . . . O X O O . . |
$$ | . . O . X . . . . . . . . O O X . . . |
$$ | . . . . . . . . . . . . . O X X . O . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . X . X . X . O . |
$$ | . . . O . . . . . . . . . . . . X O . |
$$ | . . . . X . . . . . . . . . . X . . . |
$$ | . O . . . . . . . . . . . . O O X . . |
$$ | O . O . . . . . . . . . . . . . X . . |
$$ | . O X X . . . . . . . . X O . O . . . |
$$ | . X . , X X . . . , . . X X O , O . . |
$$ | . X . O X . X . . . . . . . X O . . . |
$$ | . . O . O X . . . . . . . . X O . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Hint:
Click Here To Show Diagram Code
[go]$$Bcm89
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . O X X . . |
$$ | . . O O . X . O O . . . O . . X . X . |
$$ | . . . , . . X X O , . . O . X X X O . |
$$ | . . O . X . . . O . . . . . X X O O . |
$$ | . . . . . . . X . . . . . O X O O . . |
$$ | . . O . X . . . . . . . . O O X . . . |
$$ | . . . . . . . . . . . . . O X X . O . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . X . X . X . O . |
$$ | . . . O . . . . . . . . . . . . X O . |
$$ | . . . . X . . . . . . . . . . X . . . |
$$ | . O . . . . . . . . . . . . O O X . . |
$$ | O . O . . . . . . . . . . . . . X . . |
$$ | . O X X . . . . . . . . X O . O . . . |
$$ | . X 1 , X X . . . , . . X X O , O . . |
$$ | . X . O X . X . . . . . . . X O . . . |
$$ | . . O . O X . . . . . . . . X O . . . |
$$ | . . . O . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

That's what Go Seigen played in the game. Why?

_________________
My "guide" to become stronger in Go

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 452 posts ]  Go to page Previous  1 ... 13, 14, 15, 16, 17, 18, 19 ... 23  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