Life In 19x19 :: Whole-board Tesuji Problem

Click Here To Show Diagram Code: [go]$$W White to play and kill something $$ --------------------------------------- $$ | . . . . . . . . O X X . . . X O O . . | $$ | . . . . . . . O O O X . . X . X O O . | $$ | . O O . . . O O X X . . . . X X O . O | $$ | O O O O . O O X . , . . . . . , X O O | $$ | X O X X O O X X X X . . X X . . X X O | $$ | X X X . X O O O O X X X X O X X . . X | $$ | . . X X . X X O O O O O X O O X . . . | $$ | . X . . X X X X X O . X O O . O X . . | $$ | X . X X O X O . X . O X X O O O X 2 . | $$ | X X O O O X O X . X X X . X O X 1 X X | $$ | O O O X O O O X X . . X . X O X 3 X O | $$ | . O X X O O X X . . X X X O . O X X O | $$ | . O X X O X X . X X X X O O O . O O O | $$ | O O . X X . . . X X O X O X O . O X . | $$ | . O X X X X X X O O O O X X . O O O . | $$ | O X X O X O O O . O O . O X . X O X O | $$ | . O O O O O X . . . . O . X . X O X . | $$ | . . . . . . . . . . . . O O X X X O O | $$ | . . . . . . . . . . . . . . O . X X . | $$ ---------------------------------------[/go]

¡Cuidado!

Click Here To Show Diagram Code: [go]$$W Oops! $$ --------------------------------------- $$ | . . . . . . . . O X X . . . X O O . . | $$ | . . . . . . . O O O X . . X . X O O . | $$ | . O O . . . O O X X . . . . X X O . O | $$ | O O O O . O O X . , . . . . . , X O O | $$ | X O X X O O X X X X . . X X . . X X O | $$ | X X X . X O O O O X X X X O X X . 1 X | $$ | . . X X . X X O O O O O X O O X . 3 2 | $$ | . X . . X X X X X O . X O O . O X 5 4 | $$ | X . X X O X O . X . O X X O O O X X . | $$ | X X O O O X O X . X X X . X O . O X X | $$ | O O O X O O O X X . . X . X O . O X O | $$ | . O X X O O X X . . X X X O . O X X O | $$ | . O X X O X X . X X X X O O O . O O O | $$ | O O . X X . . . X X O X O X O . O X . | $$ | . O X X X X X X O O O O X X . O O O . | $$ | O X X O X O O O . O O . O X . X O X O | $$ | . O O O O O X . . . . O . X . X O X . | $$ | . . . . . . . . . . . . O O X X X O O | $$ | . . . . . . . . . . . . . . O . X X . | $$ ---------------------------------------[/go]

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

Click Here To Show Diagram Code: [go]$$W Safe! $$ --------------------------------------- $$ | . . . . . . . . O X X . . . X O O . . | $$ | . . . . . . . O O O X . . X . X O O . | $$ | . O O . . . O O X X . . . . X X O . O | $$ | O O O O . O O X . , . . . . . , X O O | $$ | X O X X O O X X X X . . X X . . X X O | $$ | X X X . X O O O O X X X X O X X . 3 X | $$ | . . X X . X X O O O O O X O O X . 5 4 | $$ | . X . . X X X X X O . X O O . O X X 6 | $$ | X . X X O X O . X . O X X O O O X 2 1 | $$ | X X O O O X O X . X X X . X O . O X X | $$ | O O O X O O O X X . . X . X O . O X O | $$ | . O X X O O X X . . X X X O . O X X O | $$ | . O X X O X X . X X X X O O O . O O O | $$ | O O . X X . . . X X O X O X O . O X . | $$ | . O X X X X X X O O O O X X . O O O . | $$ | O X X O X O O O . O O . O X . X O X O | $$ | . O O O O O X . . . . O . X . X O X . | $$ | . . . . . . . . . . . . O O X X X O O | $$ | . . . . . . . . . . . . . . O . X X . | $$ ---------------------------------------[/go]

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

Author:	Chew Terr [ Wed Apr 06, 2011 9:09 am ]
Post subject:	Whole-board Tesuji Problem
Click Here To Show Diagram Code [go]$$Wc White to play and kill something $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . . X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O . O X . . \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X . X X \| $$ \| O O O X O O O X X . . X . X O X . X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Saw this in a friend's game. The game ended here, but there is one tesuji for white.

Author:	Harleqin [ Wed Apr 06, 2011 9:21 am ]
Post subject:	Re: Whole-board Tesuji Problem
White can capture two stones.

Author:	mw42 [ Wed Apr 06, 2011 9:23 am ]
Post subject:	Re: Whole-board Tesuji Problem
Click Here To Show Diagram Code [go]$$W White to play and kill something $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . b X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O . O X . . \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X Q X X \| $$ \| O O O X O O O X X . . X . X O X a X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Not sure I'd call a tesuji, but if black responds at (a) then W(b).

Author:	Chew Terr [ Wed Apr 06, 2011 9:28 am ]
Post subject:	Re: Whole-board Tesuji Problem
Harleqin and mw: Yep, that's the one I was talking about. I thought it looked cool enough to show, not to mention that something similar could give the points I need to win, someday.

Author:	judicata [ Wed Apr 06, 2011 9:32 am ]
Post subject:	Re: Whole-board Tesuji Problem
I just read the subject and shuddered with fear.

Life In 19x19 http://www.lifein19x19.com/

Whole-board Tesuji Problem http://www.lifein19x19.com/viewtopic.php?f=12&t=3588	Page 1 of 1

Author:	judicata [ Wed Apr 06, 2011 9:40 am ]
Post subject:	Re: Whole-board Tesuji Problem
After actually looking at the problem, I realized worst fears are not manifest--i.e., it is not a tesuji problem that actually involves the whole board. Click Here To Show Diagram Code [go]$$W White to play and kill something $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . 3 X \| $$ \| . . X X . X X O O O O O X O O X . 5 4 \| $$ \| . X . . X X X X X O . X O O . O X 7 6 \| $$ \| X . X X O X O . X . O X X O O O X 9 8 \| $$ \| X X O O O X O X . X X X . X O X 1 X X \| $$ \| O O O X O O O X X . . X . X O X 2 X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Of course, black just should give up the two stones, and play another move at 9 (so white can finish in sente). Then again, I didn't count, so it may be lost either way.

Author:	dedroid [ Wed Apr 06, 2011 6:45 pm ]
Post subject:	Re: Whole-board Tesuji Problem
thanks, that was an interesting problem. I found it really enjoyable.

Author:	Bill Spight [ Wed Apr 06, 2011 8:37 pm ]
Post subject:	Re: Whole-board Tesuji Problem
Click Here To Show Diagram Code [go]$$W White to play and kill something $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . . X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O . O X . . \| $$ \| X . X X O X O . X . O X X O O O X 2 . \| $$ \| X X O O O X O X . X X X . X O X 1 X X \| $$ \| O O O X O O O X X . . X . X O X 3 X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] ¡Cuidado! Click Here To Show Diagram Code [go]$$W Oops! $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . 1 X \| $$ \| . . X X . X X O O O O O X O O X . 3 2 \| $$ \| . X . . X X X X X O . X O O . O X 5 4 \| $$ \| X . X X O X O . X . O X X O O O X X . \| $$ \| X X O O O X O X . X X X . X O . O X X \| $$ \| O O O X O O O X X . . X . X O . O X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Click Here To Show Diagram Code [go]$$W Correct defense $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . . X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O . O X 2 . \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X 1 X X \| $$ \| O O O X O O O X X . . X . X O X 3 X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Click Here To Show Diagram Code [go]$$W Safe! $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . 3 X \| $$ \| . . X X . X X O O O O O X O O X . 5 4 \| $$ \| . X . . X X X X X O . X O O . O X X 6 \| $$ \| X . X X O X O . X . O X X O O O X 2 1 \| $$ \| X X O O O X O X . X X X . X O . O X X \| $$ \| O O O X O O O X X . . X . X O . O X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Click Here To Show Diagram Code [go]$$W Correct play $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . 1 X \| $$ \| . . X X . X X O O O O O X O O X 8 3 2 \| $$ \| . X . . X X X X X O . X O O . O X 5 4 \| $$ \| X . X X O X O . X . O X X O O O X 0 6 \| $$ \| X X O O O X O X . X X X . X O X 7 X X \| $$ \| O O O X O O O X X . . X . X O X 9 X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] Edit: Oops! I goofed. Click Here To Show Diagram Code [go]$$W Correct play $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X a 1 X \| $$ \| . . X X . X X O O O O O X O O X . 2 3 \| $$ \| . X . . X X X X X O . X O O . O X . 4 \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X b X X \| $$ \| O O O X O O O X X . . X . X O X . X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] is the right way to start. Then is correct defense, leading to the ko. It is after midnight. Maybe White can play at "a" and fight the ko. In fact, I am pretty sure of it. But I am going to bed, now. If is at "b", Black can capture the stone, and White has lost a ko threat.

Author:	Joaz Banbeck [ Thu Apr 07, 2011 6:46 am ]
Post subject:	Re: Whole-board Tesuji Problem
Chew Terr wrote: White to play and kill something My solution: Click Here To Show Diagram Code [go]$$W $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . . X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O W O X . . \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X . X X \| $$ \| O O O X O O O X X . . X . X O X . X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go]

Author:	topazg [ Thu Apr 07, 2011 6:53 am ]
Post subject:	Re: Whole-board Tesuji Problem
Thank you all for showing me I should have spotted it

Author:	entropi [ Thu Apr 07, 2011 7:18 am ]
Post subject:	Re: Whole-board Tesuji Problem
Joaz Banbeck wrote: Chew Terr wrote: White to play and kill something My solution: Click Here To Show Diagram Code [go]$$W $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . . X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O W O X . . \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X . X X \| $$ \| O O O X O O O X X . . X . X O X . X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X . \| $$ ---------------------------------------[/go] My solution: Click Here To Show Diagram Code [go]$$W $$ --------------------------------------- $$ \| . . . . . . . . O X X . . . X O O . . \| $$ \| . . . . . . . O O O X . . X . X O O . \| $$ \| . O O . . . O O X X . . . . X X O . O \| $$ \| O O O O . O O X . , . . . . . , X O O \| $$ \| X O X X O O X X X X . . X X . . X X O \| $$ \| X X X . X O O O O X X X X O X X . . X \| $$ \| . . X X . X X O O O O O X O O X . . . \| $$ \| . X . . X X X X X O . X O O . O X . . \| $$ \| X . X X O X O . X . O X X O O O X . . \| $$ \| X X O O O X O X . X X X . X O X . X X \| $$ \| O O O X O O O X X . . X . X O X . X O \| $$ \| . O X X O O X X . . X X X O . O X X O \| $$ \| . O X X O X X . X X X X O O O . O O O \| $$ \| O O . X X . . . X X O X O X O . O X . \| $$ \| . O X X X X X X O O O O X X . O O O . \| $$ \| O X X O X O O O . O O . O X . X O X O \| $$ \| . O O O O O X . . . . O . X . X O X . \| $$ \| . . . . . . . . . . . . O O X X X O O \| $$ \| . . . . . . . . . . . . . . O . X X W \| $$ ---------------------------------------[/go]

Author:	robinz [ Thu Apr 07, 2011 7:28 am ]
Post subject:	Re: Whole-board Tesuji Problem
Well, if we're into suicidal moves now, surely S17 is the biggest one? (Assuming black takes advantage by playing T19, and we don't get into playing "losing go"...)

Author:	entropi [ Thu Apr 07, 2011 7:39 am ]
Post subject:	Re: Whole-board Tesuji Problem
robinz wrote: Well, if we're into suicidal moves now, surely S17 is the biggest one? (Assuming black takes advantage by playing T19, and we don't get into playing "losing go"...) I don't think s17 is bigger. t1 brings the black group back to life. Ok, the problem was killing something but t1 kills the game

Author:	robinz [ Thu Apr 07, 2011 7:55 am ]
Post subject:	Re: Whole-board Tesuji Problem
Good point - I'd somehow missed that

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Author:	Bill Spight [ Thu Apr 07, 2011 9:16 am ]
Post subject:	Re: Whole-board Tesuji Problem
An SGF file with variations.