Today, in a game against another 4 dan, I encountered the following position:
$$B White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . . X O . O X X . . |
$$ | . X X O . . . X O X . . X O O O X . . |
$$ | . X O O . O . O X X X . X X O X X . X |
$$ | . . . . . . . O X O . . X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |
[go]$$B White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . . X O . O X X . . |
$$ | . X X O . . . X O X . . X O O O X . . |
$$ | . X O O . O . O X X X . X X O X X . X |
$$ | . . . . . . . O X O . . X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |[/go]
White to play, status of the black group at the top?
Re: Tsumego from a game
Posted: Sun Oct 06, 2013 12:15 pm
by RBerenguel
I watched intently for a few minutes kicking my head against "WTF, it has two eyes." Then gave up on reading the continuations of this.
$$W White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . . X O . O X X . . |
$$ | . X X O . . . X O X . 1 X O O O X . . |
$$ | . X O O . O . O X X X . X X O X X . X |
$$ | . . . . . . . O X O . . X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |
[go]$$W White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . . X O . O X X . . |
$$ | . X X O . . . X O X . 1 X O O O X . . |
$$ | . X O O . O . O X X X . X X O X X . X |
$$ | . . . . . . . O X O . . X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |[/go]
Re: Tsumego from a game
Posted: Sun Oct 06, 2013 1:20 pm
by Dusk Eagle
Since playing at 'a', getting the response at 'b', then playing doesn't work, play directly.
$$B White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . . X O . O X X . . |
$$ | . X X O . . . X O X . W X O O O X . . |
$$ | . X O O . O . O X X X . X X O X X . X |
$$ | . . . . . . . O X O b a X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |
[go]$$B White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . . X O . O X X . . |
$$ | . X X O . . . X O X . W X O O O X . . |
$$ | . X O O . O . O X X X . X X O X X . X |
$$ | . . . . . . . O X O b a X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |[/go]
Re: Tsumego from a game
Posted: Sun Oct 06, 2013 7:37 pm
by speedchase
$$W White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . 5 X O . O X X . . |
$$ | . X X O . . . X O X . 1 X O O O X . . |
$$ | . X O O . O . O X X X 3 X X O X X . X |
$$ | . . . . . . . O X O 2 4 X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |
[go]$$W White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O . 5 X O . O X X . . |
$$ | . X X O . . . X O X . 1 X O O O X . . |
$$ | . X O O . O . O X X X 3 X X O X X . X |
$$ | . . . . . . . O X O 2 4 X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |[/go]
$$W White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O 4 . X O . O X X . . |
$$ | . X X O . . . X O X . 1 X O O O X . . |
$$ | . X O O . O . O X X X 2 X X O X X . X |
$$ | . . . . . . . O X O 3 5 X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |
[go]$$W White to play
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . X O . . . . O O 4 . X O . O X X . . |
$$ | . X X O . . . X O X . 1 X O O O X . . |
$$ | . X O O . O . O X X X 2 X X O X X . X |
$$ | . . . . . . . O X O 3 5 X O O X O X . |
$$ | . . X . . X . . O X X X O O X O O O . |
$$ | . . . . . . . . . O O O . . X . . . . |
$$ | . . . . . . . . . . . . O . X . O . . |[/go]
I don't see anything good for black after this
Re: Tsumego from a game
Posted: Mon Oct 07, 2013 12:40 am
by HermanHiddema
All correct
This is the most tsumego-y tsumego position I've ever seen in a real game. It feels constructed