The following sequence arises from the main variation of the 3-3 invasion inside the 4-4 hoshi stone.

After black 1, if white ignores by playing 2, what is the best sequence of play locally for black?

tenuki!
you can not kill them so why bother playing 1?
if you spend 1 more move then you are really in trouble..so i suggest you tenuki now.

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"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson

Well I can guarantee you that the White corner can't be killed. The best for Black is simply the T14-T16 exchange, but this is just small endgame.

BUT...

Click Here To Show Diagram Code

[go]$$Bc
$$ ------------------
$$ . . . . . . . . . |
$$ . . . . X O O . . |
$$ . . . X . X O . . |
$$ . . . . . X O . . |
$$ . . . . . . X O . |
$$ . . . . . . X O . |
$$ . . . . . . X X B |
$$ . . . . . . . . . |
$$ . . . . . . . . . |
$$ . . . . . . . . . |[/go]

This is a different story. If Black has T13 and it's his turn, then White's corner can be killed.

The original question is whether the 3-3 invasion can be killed. The answer is yes, as long as there is sufficient outside thickness. Black must chase white out into the middle with a move at S16. But this is risky unless black is absolutely certain that white cannot live by escaping.

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Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).

The turning at is not sente against the corner. This is actually the reason that White adds another crawl on the second line.

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A good system naturally covers all corner cases without further effort.

can you show me how you can kill this group?

_________________
"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson

_________________
"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson

Thanks, Darrell. Should have seen that.

edit: amnal got it as well.

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My homepages: http://senseis.xmp.net/?Unkx80 and http://yeefan.sg/.

thank you very much..

i just noticed something funny about your note.
your handwriting is same as mine.
i thought i was looking at my notes from college.

did you notice that all mathmaticians have bad handwriting and notes?

_________________
"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson

That's what you call "bad" handwriting? I'll have to find some of my old college notes. Of course I never used my notes, so maybe that's why I never learned to make good ones.

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KGS 4 kyu - Game Archive - Keyboard Otaku

Thank you everyone for your insight.

I thought that Araban's handwriting is okay. At least I can make out what he is writing.

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My homepages: http://senseis.xmp.net/?Unkx80 and http://yeefan.sg/.

"Bad handwriting is the only way people remember we're doctors too"

This always annoys me. "Doctor" means "teacher". Physicians usurped the title and have tried to make it their own. At least in the US a physician has an MD degree. In Britain, unless it has changed since I left, the "family doctor" doesn't even need a doctoral degree, only and MB degree.

Why is a person with an MD degree always referred to as "Dr.", whereas a person with a JD degree just about never is, and PhDs are frequently referred to as "Mr."?

_________________
Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).