Life In 19x19

Posted: **Thu Jan 10, 2019 10:12 am**

hyperpape wrote:I wonder, does everyone involved know whose turn it is?

It is my turn. At last I think it is. Regardless, I'm going to move next.
I just need some time to think about it.

Posted: **Tue May 28, 2019 1:36 am**

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

This stone contains his group, and connects to my center group like this:

Click Here To Show Diagram Code: [go]$$Bc $$ ----------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . X O O . . . . . . . . . . . . . . . | $$ | . X O X . O O X . O . X . . . . . . . | $$ | . . X X . O O X X O . O X X . X . X . | $$ | . . . . . X O . X X O . O . . . . . . | $$ | . . . X . X O . . . O . . . . . O . . | $$ | . . . . . O O X . X O 1 X B . O . . . | $$ | . X . X . . . . . . X O . . . O X . . | $$ | . O . . X O . . . . X . X . . . . . . | $$ | . . O O . O X X X , X . . . O , O . . | $$ | . O X O . O O O . O O . . . . . . . . | $$ | . . X X X O . . . O X . . X O . X . . | $$ | . . . X O O X . . . . . O O . . . . . | $$ | . . O X . X . . . . . . . . X . X . . | $$ | . . . . . X X . X X X X O . . . . . . | $$ | . . X X . . . . O . . O . O . X . . . | $$ | . X O X X O O . O X X . . O X . . . . | $$ | . O O O O . . X O . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ----------------------------------------[/go]

or like this:

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

Posted: **Wed Jun 05, 2019 4:15 am**

I read a while ago (maybe in a Kageyama book? Or maybe the Treasure Chest Enigma?) that if your opponent spends 1 hour on a move, you should spend 2 hours on the response.

I moved in November 2017; and the reply was May 2019. So I think that give me 3 years for the next move, or a May 2022 target.

Posted: **Wed Jun 05, 2019 5:35 am**

drmwc wrote:I read a while ago (maybe in a Kageyama book? Or maybe the Treasure Chest Enigma?) that if your opponent spends 1 hour on a move, you should spend 2 hours on the response.

I am put in mind of a story about Emmanuel Lasker by a British player who played against him in a tournament after Lasker was no longer world champion. The player wanted to sacrifice a knight against Lasker, and because it was Lasker, he checked his reading more than once to make sure that the sacrifice was sound. To his surprise, Lasker replied almost immediately, and declined the sacrifice. After the game he asked Lasker how he had figured out his move so quickly. Lasker replied, "If a strong master thinks for a half hour and then offers me a knight, I think I should not take it."

Also, if my opponent thinks for one hour on a move, someone should wake me up.

Posted: **Wed Jun 05, 2019 7:37 am**

drmwc wrote:... I think that give me 3 years for the next move, or a May 2022 target.

Sure. No problem. I wouldn't want you to feel rushed.
But there is an upper bound...https://www.space.com/14732-sun-burns-star-death.html

Posted: **Wed Jun 05, 2019 11:35 am**

drmwc wrote:I read a while ago (maybe in a Kageyama book? Or maybe the Treasure Chest Enigma?) that if your opponent spends 1 hour on a move, you should spend 2 hours on the response.

I moved in November 2017; and the reply was May 2019. So I think that give me 3 years for the next move, or a May 2022 target.

This bit of advice regarding doubling the time your opponent takes is quoted in a story told by Nakayama in Gokyou Monogatari. A translated version appeared in issue number 50 of "Go World". It involved episodes of contests of endurance during the tournament for qualification for pro shodan in around 1932. In those days no clocks were used in the qualification tournament. Nakayama described two cases. One involved the late Hoshino Toshi whose opponent took eight hours to make a move and Hoshino, quoted his teacher regarding doubling the time, and took 16 hours to make a pretty obvious move. The game continued in this fashion, as did the next two games and Hoshino played for six days without sleep. The other case involved Nakayama's teacher, Suzuki Goro, and Sakata.

Posted: **Mon Jun 22, 2020 3:20 pm**

drmwc wrote:I read a while ago (maybe in a Kageyama book? Or maybe the Treasure Chest Enigma?) that if your opponent spends 1 hour on a move, you should spend 2 hours on the response.

I moved in November 2017; and the reply was May 2019. So I think that give me 3 years for the next move, or a May 2022 target.

Shall we make byo-yomi six months?

Posted: **Mon Jun 22, 2020 3:50 pm**

I think it's time to admit that both players have lost on time.

Posted: **Wed Jul 15, 2020 3:57 am**

Thanks for the reminder! I will aim to make a move some time this year....

Posted: **Fri Jul 24, 2020 4:29 pm**

Joaz Banbeck wrote:...
Shall we make byo-yomi six months?

I just noticed in another thread, ( forum/viewtopic.php?p=246881#p246881 ) a more relaxed byo-yomi was used. That seems to set a precedent. So the proper term should be ten years.

Sorry to have rushed you.

Posted: **Fri Jul 24, 2020 11:16 pm**

Something to entertain you observers for the next couple of years:

To get an idea of where the game stands now, lets count points.

Black has 20 in the upper right, 20 in the lower right, and 10 in the upper left. A play at E18 grabs another 10.
If white secures E18 in gote, black gets at least 10 in the lower left side.
Even if we round down, it is hard to imagine black with less than 55 points.

White gets maybe 15 on the right, another 15 in the lower left, 5 up top, and a few miscellaneous points elsewhere.
It looks like about 40 points, maybe 50 if everything in yose goes white's way. ( And this is assuming that white somehow saves his top middle group )

In summary, with even the most white-biased counting, black still wins.

Thus the only way for white to win is to kill something. Another way of phrasing that is that black need only secure life for all of his groups to win.

Let's start with the most dubious proposition above: that white's upper middle group can live.

He can try something like this:

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

...or this:

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

I don't see how it lives. ( It gets tricky around P15 in some lines, but black always comes out ahead. )

Posted: **Sat Jul 25, 2020 9:12 am**

If you guys wait long enough, some of the stones might decay, and you’ll have a different board position to deal with.

Posted: **Tue Dec 15, 2020 10:24 am**

drmwc wrote:Thanks for the reminder! I will aim to make a move some time this year....

You only have 16 days left in this year.

Posted: **Fri Jan 07, 2022 11:44 pm**

2021 was a bad year, so nobody can hold it against you if you didn't make a move then.

drmwc wrote:... a May 2022 target.

Insisting on the exact month would be crass. Shall we say sometime in 2022?

Posted: **Sat Jan 08, 2022 12:01 am**

Kirby wrote:If you guys wait long enough, some of the stones might decay, and you’ll have a different board position to deal with.

That's a nice idea of go variant. Let's call it "decay-go": stones disappear after a fixed period, say 10 years. Or maybe "radioactive-go": stones have a half life of 10 years. The player who is behind can then try to complicate the game and force his opponent to think for a few decades, so that the board returns to the empty state.

Life In 19x19

#231 drmwc vs Joaz Banbeck

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Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck

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Re: #231 drmwc vs Joaz Banbeck

Re: #231 drmwc vs Joaz Banbeck