corner problem after Joseki

LR24 · #1

Click Here To Show Diagram Code: [go]$$c first 10 joseki moves $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . 0 . . . . . $$ | . 8 4 . . 3 . . . . $$ | . 6 5 1 . . . . . , $$ | . 7 9 . . . . . . . $$ | . . 2 . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

Click Here To Show Diagram Code: [go]$$c joseki continuation $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . O 1 . . . . $$ | . O O 4 2 X . . . . $$ | . O X X 3 . . . . , $$ | . X X . . . 5 . . . $$ | . . O . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

My question:

Click Here To Show Diagram Code: [go]$$c What now? $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . O X . . . . $$ | . O O . O X . . . . $$ | . O X X X W . . , $$ | . X X . . . . . . . $$ | . . O . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

DO NOT READ THIS IF YOU WANT TO SOLVE THE CORNER PROBLEM BELOW YOURSELF

Promised Corner problem:

Click Here To Show Diagram Code: [go]$$c Black to play - status of white corner? $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . O X . . . . $$ | . O O . O X . . . . $$ | . O X X X X . . , $$ | . X X . . . . . . . $$ | . . a . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

There was a white stone at a which I edited out. Not totally sure if it changes anything, you may see it as an extra-question :mrgreen:

Sverre · #2

LR24 wrote:

Promised Corner problem:

Bill Spight · #3

LR24 wrote:

My question:

Click Here To Show Diagram Code: [go]$$c What now? $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . O X . . . . $$ | . O O . O X . . . . $$ | . O X X X W . . , $$ | . X X . . . . . . . $$ | . . O . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

Click Here To Show Diagram Code: [go]$$c What now? $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . O X . . . . $$ | . O O . O X . 1 . . $$ | . O X X X O 6 7 , $$ | . X X . . . . . . . $$ | . . O 3 2 5 . . . . $$ | . . . 4 . . . . . . $$ | . . . . . . . . . .[/go]

From the Suzuki-Kitani Small Joseki Dictionary.

Jonas · #4

Oh boy the move 5 simply looks gorgeous, while so simple I bet I'd have missed it in an actual game.

LR24 · #5

A late "Thanks" for the replies

I would never come to think about the sequence Bill posted :mrgreen:

HermanHiddema · #6

For a more interesting corner problem, remove the stone at E16.

So:

Click Here To Show Diagram Code: [go]$$W $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . 7 8 . . . . $$ | . 5 1 . 9 0 . . . . $$ | . 3 2 X . B . . . , $$ | . 4 6 . . . . . . . $$ | . . W . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

In this joseki (3-3 invasion after black answers the :wc:

approach with the high move :bc:

), what is the status if white plays tenuki with :w11:

?

Bill Spight · #7

HermanHiddema wrote:

For a more interesting corner problem, remove the stone at E16.

So:

Click Here To Show Diagram Code: [go]$$W $$ ------------------ $$ | . . . . . . . . . . $$ | . . . . 7 8 . . . . $$ | . 5 1 . 9 0 . . . . $$ | . 3 2 X . B . . . , $$ | . 4 6 . . . . . . . $$ | . . W . . . . . . . $$ | . . . . . . . . . . $$ | . . . . . . . . . .[/go]

In this joseki (3-3 invasion after black answers the :wc:

approach with the high move :bc:

), what is the status if white plays tenuki with :w11:

?

White needs medical help. He is in critical condition.