Life In 19x19

Posted: **Tue Dec 06, 2022 5:04 pm**

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

Posted: **Wed Dec 07, 2022 7:37 am**

Can't white just do this?

Click Here To Show Diagram Code: [go]$$Wc White to play $$ +---------------------------------------+ $$ | . . . . O . . . . . . . X O X X . . . | $$ | . X X X O O . . 2 1 3 . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Posted: **Wed Dec 07, 2022 8:43 am**

Kirby wrote:Can't white just do this?

Then what about this?

Click Here To Show Diagram Code: [go]$$Wc Seki? $$ +---------------------------------------+ $$ | . . . . O . . 9 8 6 4 0 X O X X . . . | $$ | . X X X O O . 5 2 1 3 . . O O X . . . | $$ | . . O X O X O 7 X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Click Here To Show Diagram Code: [go]$$Wc Ko? $$ +---------------------------------------+ $$ | . . . . O . . . . 5 4 . X O X X . . . | $$ | . X X X O O . . 2 1 3 6 . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Posted: **Wed Dec 07, 2022 8:53 am**

To avoid the yose ko mentionned by Lightvector why not

Click Here To Show Diagram Code: [go]$$Wc White to play $$ +---------------------------------------+ $$ | . . . . O . . . . . 3 . X O X X . . . | $$ | . X X X O O . . 2 1 . . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Posted: **Wed Dec 07, 2022 9:52 am**

lightvector wrote:
Kirby wrote:Can't white just do this?
Then what about this?
$$Wc Seki?
$$ +---------------------------------------+
$$ | . . . . O . . 9 8 6 4 0 X O X X . . . |
$$ | . X X X O O . 5 2 1 3 . . O O X . . . |
$$ | . . O X O X O 7 X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
$$ | X O . . O O X O X . . X . X X O X . X |
$$ | O . . . O X X X . . X O X X O O O X . |
$$ | . O . O X X . . X X O O O X . O X . X |
$$ | . . . O O O X O X X O . O . . O X X . |
$$ | . . O . . . X X O O X O O O . O X O . |
$$ | . X O X X X X O O X X . O . O . O X . |
$$ | . O O O X O O O . . . . O . O O X . . |
$$ | . O X X X O . O O X . . . O X X X X . |
$$ | O O X . X . O . O X . . . O O X O . . |
$$ | O X O O O O O O X O . . O O X O O . . |
$$ | X X X X O X X O X O O O . O X X O X . |
$$ | . . X . X . . X X X O X O X X O X . X |
$$ | . . . . . . . . X . . . . . . . . X . |
$$ +---------------------------------------+
Click Here To Show Diagram Code
[go]$$Wc Seki? $$ +---------------------------------------+ $$ | . . . . O . . 9 8 6 4 0 X O X X . . . | $$ | . X X X O O . 5 2 1 3 . . O O X . . . | $$ | . . O X O X O 7 X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

$$Wc Ko?
$$ +---------------------------------------+
$$ | . . . . O . . . . 5 4 . X O X X . . . |
$$ | . X X X O O . . 2 1 3 6 . O O X . . . |
$$ | . . O X O X O . X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
$$ | X O . . O O X O X . . X . X X O X . X |
$$ | O . . . O X X X . . X O X X O O O X . |
$$ | . O . O X X . . X X O O O X . O X . X |
$$ | . . . O O O X O X X O . O . . O X X . |
$$ | . . O . . . X X O O X O O O . O X O . |
$$ | . X O X X X X O O X X . O . O . O X . |
$$ | . O O O X O O O . . . . O . O O X . . |
$$ | . O X X X O . O O X . . . O X X X X . |
$$ | O O X . X . O . O X . . . O O X O . . |
$$ | O X O O O O O O X O . . O O X O O . . |
$$ | X X X X O X X O X O O O . O X X O X . |
$$ | . . X . X . . X X X O X O X X O X . X |
$$ | . . . . . . . . X . . . . . . . . X . |
$$ +---------------------------------------+
Click Here To Show Diagram Code
[go]$$Wc Ko? $$ +---------------------------------------+ $$ | . . . . O . . . . 5 4 . X O X X . . . | $$ | . X X X O O . . 2 1 3 6 . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Yes. After moves 1,3 there will be ko or seki

Posted: **Wed Dec 07, 2022 10:08 am**

Gérard TAILLE wrote:
To avoid the yose ko mentionned by Lightvector why not
$$Wc White to play
$$ +---------------------------------------+
$$ | . . . . O . . . . . 3 . X O X X . . . |
$$ | . X X X O O . . 2 1 . . . O O X . . . |
$$ | . . O X O X O . X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
$$ | X O . . O O X O X . . X . X X O X . X |
$$ | O . . . O X X X . . X O X X O O O X . |
$$ | . O . O X X . . X X O O O X . O X . X |
$$ | . . . O O O X O X X O . O . . O X X . |
$$ | . . O . . . X X O O X O O O . O X O . |
$$ | . X O X X X X O O X X . O . O . O X . |
$$ | . O O O X O O O . . . . O . O O X . . |
$$ | . O X X X O . O O X . . . O X X X X . |
$$ | O O X . X . O . O X . . . O O X O . . |
$$ | O X O O O O O O X O . . O O X O O . . |
$$ | X X X X O X X O X O O O . O X X O X . |
$$ | . . X . X . . X X X O X O X X O X . X |
$$ | . . . . . . . . X . . . . . . . . X . |
$$ +---------------------------------------+
Click Here To Show Diagram Code
[go]$$Wc White to play $$ +---------------------------------------+ $$ | . . . . O . . . . . 3 . X O X X . . . | $$ | . X X X O O . . 2 1 . . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

The right answer!

Posted: **Wed Dec 07, 2022 10:09 am**

Click Here To Show Diagram Code: [go]$$Wc How respond to 4? $$ +---------------------------------------+ $$ | . . . . O . . . 4 . 3 . X O X X . . . | $$ | . X X X O O . . 2 1 . . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Posted: **Wed Dec 07, 2022 10:22 am**

Like this?

Posted: **Wed Dec 07, 2022 10:55 am**

jlt wrote:Like this?

$$Wc How respond to 4
$$ +---------------------------------------+
$$ | . . . . O . . . 4 . 3 . X O X X . . . |
$$ | . X X X O O . . 2 1 5 . . O O X . . . |
$$ | . . O X O X O . X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
$$ | X O . . O O X O X . . X . X X O X . X |
$$ | O . . . O X X X . . X O X X O O O X . |
$$ | . O . O X X . . X X O O O X . O X . X |
$$ | . . . O O O X O X X O . O . . O X X . |
$$ | . . O . . . X X O O X O O O . O X O . |
$$ | . X O X X X X O O X X . O . O . O X . |
$$ | . O O O X O O O . . . . O . O O X . . |
$$ | . O X X X O . O O X . . . O X X X X . |
$$ | O O X . X . O . O X . . . O O X O . . |
$$ | O X O O O O O O X O . . O O X O O . . |
$$ | X X X X O X X O X O O O . O X X O X . |
$$ | . . X . X . . X X X O X O X X O X . X |
$$ | . . . . . . . . X . . . . . . . . X . |
$$ +---------------------------------------+
Click Here To Show Diagram Code
[go]$$Wc How respond to 4 $$ +---------------------------------------+ $$ | . . . . O . . . 4 . 3 . X O X X . . . | $$ | . X X X O O . . 2 1 5 . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Yes

Click Here To Show Diagram Code: [go]$$Wc what happens next? $$ +---------------------------------------+ $$ | . . . . O . . . 4 . 3 . X O X X . . . | $$ | . X X X O O . 5 2 1 . . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

Posted: **Wed Dec 07, 2022 11:06 am**

Click Here To Show Diagram Code: [go]$$Wc what happens next? $$ +---------------------------------------+ $$ | . . . . O . . 9 4 8 3 . X O X X . . . | $$ | . X X X O O . 5 2 1 6 7 . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . |[/go]

Click Here To Show Diagram Code: [go]$$Wc ko $$ +---------------------------------------+ $$ | . . . . O . . O X X O . X O X X . . . | $$ | . X X X O O . O X . B O . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . |[/go]

Posted: **Wed Dec 07, 2022 11:15 am**

jlt wrote:
$$Wc what happens next?
$$ +---------------------------------------+
$$ | . . . . O . . 9 4 8 3 . X O X X . . . |
$$ | . X X X O O . 5 2 1 6 7 . O O X . . . |
$$ | . . O X O X O . X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
Click Here To Show Diagram Code
[go]$$Wc what happens next? $$ +---------------------------------------+ $$ | . . . . O . . 9 4 8 3 . X O X X . . . | $$ | . X X X O O . 5 2 1 6 7 . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . |[/go]

$$Wc ko
$$ +---------------------------------------+
$$ | . . . . O . . O X X O . X O X X . . . |
$$ | . X X X O O . O X . B O . O O X . . . |
$$ | . . O X O X O . X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
Click Here To Show Diagram Code
[go]$$Wc ko $$ +---------------------------------------+ $$ | . . . . O . . O X X O . X O X X . . . | $$ | . X X X O O . O X . B O . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . |[/go]

white can play better

Posted: **Wed Dec 07, 2022 11:26 am**

Click Here To Show Diagram Code: [go]$$Wc $$ +---------------------------------------+ $$ | . . . . O . . . 4 8 3 7 X O X X . . . | $$ | . X X X O O . 5 2 1 6 . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . |[/go]

Click Here To Show Diagram Code: [go]$$Wc Black dead $$ +---------------------------------------+ $$ | . . . . O . . . X X O O . O X X . . . | $$ | . X X X O O . O X . X . W O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . |[/go]

Posted: **Wed Dec 07, 2022 11:29 am**

good point jlt

Click Here To Show Diagram Code: [go]$$W $$ +---------------------------------------+ $$ | . . . . O . . . 4 . 3 . X O X X . . . | $$ | . X X X O O . b 2 1 a . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]

In any case white "a" seems better than white "b" because after white "a" black has no more ko threat available

Posted: **Wed Dec 07, 2022 11:51 am**

Techniques of Capturing Race by Tsuruyama Atsushi 8p
Nihon Kiin Go Channel for overseas

https://www.youtube.com/watch?v=MpxuHGhiXW0

Posted: **Wed Dec 07, 2022 12:04 pm**

dany wrote:
Gérard TAILLE wrote:
To avoid the yose ko mentionned by Lightvector why not
$$Wc White to play
$$ +---------------------------------------+
$$ | . . . . O . . . . . 3 . X O X X . . . |
$$ | . X X X O O . . 2 1 . . . O O X . . . |
$$ | . . O X O X O . X X O O O O O X X . . |
$$ | . X X O X . O O X O O X X X X O X . . |
$$ | X . . O O O X O O X O O X O O O O X . |
$$ | X . O . O X X O X X X X X X O O X X . |
$$ | X O . . O O X O X . . X . X X O X . X |
$$ | O . . . O X X X . . X O X X O O O X . |
$$ | . O . O X X . . X X O O O X . O X . X |
$$ | . . . O O O X O X X O . O . . O X X . |
$$ | . . O . . . X X O O X O O O . O X O . |
$$ | . X O X X X X O O X X . O . O . O X . |
$$ | . O O O X O O O . . . . O . O O X . . |
$$ | . O X X X O . O O X . . . O X X X X . |
$$ | O O X . X . O . O X . . . O O X O . . |
$$ | O X O O O O O O X O . . O O X O O . . |
$$ | X X X X O X X O X O O O . O X X O X . |
$$ | . . X . X . . X X X O X O X X O X . X |
$$ | . . . . . . . . X . . . . . . . . X . |
$$ +---------------------------------------+
Click Here To Show Diagram Code
[go]$$Wc White to play $$ +---------------------------------------+ $$ | . . . . O . . . . . 3 . X O X X . . . | $$ | . X X X O O . . 2 1 . . . O O X . . . | $$ | . . O X O X O . X X O O O O O X X . . | $$ | . X X O X . O O X O O X X X X O X . . | $$ | X . . O O O X O O X O O X O O O O X . | $$ | X . O . O X X O X X X X X X O O X X . | $$ | X O . . O O X O X . . X . X X O X . X | $$ | O . . . O X X X . . X O X X O O O X . | $$ | . O . O X X . . X X O O O X . O X . X | $$ | . . . O O O X O X X O . O . . O X X . | $$ | . . O . . . X X O O X O O O . O X O . | $$ | . X O X X X X O O X X . O . O . O X . | $$ | . O O O X O O O . . . . O . O O X . . | $$ | . O X X X O . O O X . . . O X X X X . | $$ | O O X . X . O . O X . . . O O X O . . | $$ | O X O O O O O O X O . . O O X O O . . | $$ | X X X X O X X O X O O O . O X X O X . | $$ | . . X . X . . X X X O X O X X O X . X | $$ | . . . . . . . . X . . . . . . . . X . | $$ +---------------------------------------+[/go]
The right answer!

There is another right answer

Life In 19x19

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