Interesting shapes - shapes to remember

For lessons, as well as threads about specific moves, and anything else worth studying.
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Gomoto
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Interesting shapes - shapes to remember

Post by Gomoto »

shape #1

Black to play
Click Here To Show Diagram Code
[go]$$B
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . . X . . O . . ,
$$ | . . . . . . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
The only move:
Click Here To Show Diagram Code
[go]$$B
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . . X . . O . . ,
$$ | . . B . . . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
Bill Spight
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Re: Interesting shapes - shapes to remember

Post by Bill Spight »

Well, I goofed! ;)
Click Here To Show Diagram Code
[go]$$Bc
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . . X . . O . . ,
$$ | . . . . . . . . . .
$$ | . . O 1 . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
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Uberdude
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Re: Interesting shapes - shapes to remember

Post by Uberdude »

Often after kick the bots like to push up.
Click Here To Show Diagram Code
[go]$$B
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . . X . 3 O . . ,
$$ | . . 1 . . . . . . .
$$ | . . O 2 . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
If you push without kick then either immediately or in future this attach and cut is a nice tactic for white to make black inefficient, hence the kick makes more sense.
Click Here To Show Diagram Code
[go]$$B
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . 3 4 . X . . . .
$$ | . . 2 X . 1 O . . ,
$$ | . . . . . . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
sorin
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Re: Interesting shapes - shapes to remember

Post by sorin »

Gomoto wrote: The only move:
That's almost never the case that anything is "the only move", especially in the opening.
I can think of at least 4 more "only moves" :-)

Also, are there any other stones nearby? Or on the rest of the board?
Gomoto
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Re: Interesting shapes - shapes to remember

Post by Gomoto »

Tenuki is always an option. Let us think about the local candidate moves in this shape.
Click Here To Show Diagram Code
[go]$$Bc
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . . X . . O . . ,
$$ | . . . . . . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
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Joaz Banbeck
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Re: Interesting shapes - shapes to remember

Post by Joaz Banbeck »

Click Here To Show Diagram Code
[go]$$Bc
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . . X . . O . . ,
$$ | . . . . . . . . . .
$$ | . . O . 1 . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
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jlt
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Re: Interesting shapes - shapes to remember

Post by jlt »

Click Here To Show Diagram Code
[go]$$Bc
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X 1 . . .
$$ | . . . X . . O . . ,
$$ | . . . . . . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
sorin
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Re: Interesting shapes - shapes to remember

Post by sorin »

Click Here To Show Diagram Code
[go]$$Bc
$$ +--------------------
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . X . . . .
$$ | . . 1 X . . O . . ,
$$ | . . . . . . . . . .
$$ | . . O . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . . . . . . . .
$$ | . . . , . . . . . ,[/go]
Gomoto
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Re: Interesting shapes - shapes to remember

Post by Gomoto »

@sorin
shape1.jpg
shape1.jpg (292.95 KiB) Viewed 10054 times
shape1b.jpg
shape1b.jpg (298.98 KiB) Viewed 10054 times
Last edited by Gomoto on Mon Dec 03, 2018 2:53 pm, edited 1 time in total.
Gomoto
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Re: Interesting shapes - shapes to remember

Post by Gomoto »

@jlt&joaz: have a look at uberdude's variations, the combination with the kick and the push up is just better
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Re: Interesting shapes - shapes to remember

Post by sorin »

Gomoto wrote:@sorin
shape1.jpg
shape1b.jpg
Interesting, I also checked and of the several board positions I tried, it looks like LeelaZero is obsessed with kosumi-tsuke :-)
Gomoto
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Re: Interesting shapes - shapes to remember

Post by Gomoto »

So is ELFv0 :-)
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Re: Interesting shapes - shapes to remember

Post by jlt »

If there are other stones nearby, LZ157 doesn't necessarily choose the kosumi-tsuke (the position below may be artificial).
shape.JPG
shape.JPG (109.82 KiB) Viewed 9975 times
Vio
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Re: Interesting shapes - shapes to remember

Post by Vio »

Doesn't need LZ to have a feeling that C15 inducing D14 could be a pretty bad move.
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