Tuesday, November 08, 2005

Testing. Umm, ... is this thing on?

And now for something completely different.

Click on the orange play button below.

this is an audio post - click to play

This probably will not be my usual method of blogging but it might come in handy someday. I was able to use my mobile phone for the audio post. Maybe I'll be able to report from the midst of a tournament someday.

A lot of folks form first impressions about what a person might sound like so I hope that my voice quality isn't anti-climactic (or something of such). Not all of us gents can sound like the late Peter Jennings.

Where would you play Black's stones?
This position is from my lunchtime match today.

Black to play.

White R17 hopes to create a living group in a rather surrounded space and it's now Black's turn to move. What are the most efficient moves to deny White life? Can White live with skillful play?

I was successful in stopping a living group from forming there but I probably tossed-in one more stone than was needed (losing 1 moku).

12 Comments:

At 1:56 PM, November 08, 2005, Anonymous yoyoma said...

No way for white to live, in fact I don't think white can live there even if he moves again. If you want to add a move now to be sure, Q18 is simplest in my opinion, although pretty much any move will work.

 
At 2:25 PM, November 08, 2005, Anonymous Anonymous said...

Not sure, but how about something similar to a "monkey jump", e.g. R18? I don't think White can stop it from conecting back to the Black wall (O15-O19), and it chews up a lot of White's potential eyespace.

If White doesn't block the stone at R18, then just keep pushing in deeper.

If he does block, his possible eyespace is limited to 5 points: T19, S18, T18, S17, T17. Depending
on White's previous moves, it may
be possible to push in from Black's
other wall, jumping to T17, or
perhaps even T18 (which looks to be the vital point of a "blocky five").

As yoyama says, there are probably
other ways. This one just seems
clearer to me.

-Rein

 
At 3:31 PM, November 08, 2005, Blogger ChiyoDad said...

I did feel that R17 was over-optimistic and some variation of the monkey-jump came to mind. I opted for S17 (approaching from the other group).

 
At 4:30 PM, November 08, 2005, Anonymous Anonymous said...

Oops, sorry, misread the coordinates earlier... I meant to suggest "R19" as a possible first move for Black, not "R18". (I.e., play a black stone along the top edge of the board.) The rest of the post should make more sense now.

- Rein

 
At 5:27 PM, November 08, 2005, Anonymous hdoong said...

You can tenuki and play H19. Next white will probably try S18, then your move at Q18 will kill it.

 
At 6:37 PM, November 08, 2005, Blogger Jewish Atheist said...

Since you can monkey jump from either side, there's no way it'll live. Ignore it and play P5 for 3 pts (p6, q7, & r8) with sente.

 
At 7:16 PM, November 08, 2005, Anonymous hdoong said...

Hi, P5 is sente but is not worth 3 points coz the black's bottom right side is already captured.

 
At 9:52 AM, November 09, 2005, Blogger Jewish Atheist said...

ah! Good point. 2 points.

 
At 2:51 PM, November 09, 2005, Anonymous yoyoma said...

I don't think P5 is worth any points. If white tries to make a point there (and by doing so, also make Q7 a point), black can just O5 to make it false. So still eventually white has to fill P6 and capture at S6. In this part of the board, black should play L5 which is 1 point sente. 1 point because otherwise white can L5 and steal a point from black. Sente because if white ignores, black can P6, white P5, black O5 and if white connects P6 black captures Q7. So white should answer by playing P6 himself.

 
At 2:20 AM, November 10, 2005, Blogger Gilgamesh said...

like they say you can tenuki.. but if you want a move I would play S18. looks stylish to me ^^

 
At 6:26 AM, November 10, 2005, Blogger ChiyoDad said...

That's a really good sequence with L5, yoyoma! Boy, I really need to read like that. I guess it'll come with experience.

Nice to hear from you reducer_zim (aka Gilgamesh)! It's clear that any well-thought move denies White life. I think my opponent was hoping to set up some sort of ko threat on the assumption that I might make a mistake there or somewhere else on the board.

 
At 7:30 AM, November 10, 2005, Blogger Jewish Atheist said...

Rats. Wrong again. Thanks for the correction, yoyoma. :)

 

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