It is currently Thu Apr 18, 2024 11:24 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 4 posts ] 
Author Message
Offline
 Post subject: kyu problem
Post #1 Posted: Fri Jul 24, 2015 5:13 am 
Lives in gote
User avatar

Posts: 314
Location: Germany
Liked others: 10
Was liked: 128
Rank: KGS 4k
Ever have your opponent play a ko threat and you're like
Image
and then you connect the ko and then you resign 3 moves later?

Here's an easy kyu tsumego that resulted from that exact situation. White to live with those middle 6 stones. It's kind of obvious, but make sure you read it out completely
Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . O X X O O O O O X . O . . . |
$$ | . . . O . O . X X O X X X X . O . O . |
$$ | . . . , . . X . . X O X . . . , O . . |
$$ | . . . . . . . . . . O X . X . . . O . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]

Top
 Profile  
 
Offline
 Post subject: Re: kyu problem
Post #2 Posted: Fri Jul 24, 2015 6:54 am 
Oza
User avatar

Posts: 2411
Location: Ghent, Belgium
Liked others: 359
Was liked: 1019
Rank: KGS 2d OGS 1d Fox 4d
KGS: Artevelde
OGS: Knotwilg
Online playing schedule: UTC 18:00 - 22:00
I think I know what you're after but after 7 forcing moves and answers, :w15: leaves Black in a loose ladder and White's top group has two liberties. At that point, Black can atari that group from the inside. Or there's a variation I'm missing but in any case I wouldn't call it obvious.

Top
 Profile  
 
Offline
 Post subject: Re: kyu problem
Post #3 Posted: Fri Jul 24, 2015 7:24 am 
Oza

Posts: 2180
Location: ʍoquıɐɹ ǝɥʇ ɹǝʌo 'ǝɹǝɥʍǝɯos
Liked others: 237
Was liked: 662
Rank: AGA 5d
GD Posts: 4312
Online playing schedule: Every tenth February 29th from 20:00-20:01 (if time permits)
Knotwilg, I think you are overlooking one simple thing:

The trick is to not threaten to connect out to the right as that reduces white's liberties by one.
Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ | . . . . . . 3 4 1 . . . 2 . . . . . . |
$$ | . . . . . O X X O O O O O X . O . . . |
$$ | . . . O . O 0 X X O X X X X . O . O . |
$$ | . . . , . . X 9 5 X O X . . . , O . . |
$$ | . . . . . . . . 7 6 O X . X . . . O . |
$$ | . . . X . . . . . 8 . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]


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

_________________
Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).


This post by DrStraw was liked by: Knotwilg
Top
 Profile  
 
Offline
 Post subject: Re: kyu problem
Post #4 Posted: Mon Jul 27, 2015 10:27 am 
Lives in gote
User avatar

Posts: 314
Location: Germany
Liked others: 10
Was liked: 128
Rank: KGS 4k
since the first problem was such a hit, here another little reading exercise from a recent game. Black to reduce white's "territory". This one should really be easy.
Click Here To Show Diagram Code
[go]$$B
$$ +--------------------
$$ | . . X X O . . . . .
$$ | X X . X O X . . . .
$$ | O O X X O X X X . X
$$ | . . O , O . O . . ,
$$ | . O . . . . O . . .
$$ | . O X . . . O . . .
$$ | . . O . . . O . . .
$$ | . X O X . . O . . .
$$ | . X X O . O . O . .
$$ | . . . O . . . . . ,
$$ | . . X . . . . . . .[/go]



Quote:
in any case I wouldn't call it obvious

The points is that every move is essentially forced, you just have to do the work and count the liberties carefully. Kind of like that spiral ladder problem from Kageyama's Lessons in the Fundamentals of Go:
Click Here To Show Diagram Code
[go]$$B black to capture the cutting stones
$$ --------------------+
$$ . . . . . . . O . . |
$$ . . . . . X O . . . |
$$ . . . . X X X O O . |
$$ , . . . . Q Q X . . |
$$ . . . X . . . X . . |
$$ . . . . . O . . . . |
$$ . . . . . . . X . . |
$$ . . . . . . O X . . |
$$ . . . . . . O X . . |
$$ , . . . . . , . . . |
$$ . . . . . . . . . . |[/go]

(I assume it's alright to post this problem here, if not then I'll remove it)

I would also consider that an easy problem, since there's no branching whatsoever. You just have to place the stones on your mental goban.

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

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