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 Post subject: Re: Wacky centre move training from bots.
Post #21 Posted: Sun Feb 10, 2019 3:52 am 
Judan

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KGS: Uberdude 4d
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Here's a nice example of a "kakoi" surrounding move (as JF likes to mention) a pro* (black) should have made playing BenseonDarr on Fox, but didn't so got reduced and fell behind. White has just cut at 1, and black sacrificed the left 3 stones to build the top centre.

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


Seeing as black lost a lot on the left, he should actually consolidate his gains on the top with this kakoi move, as often the case a large knight move from a boundary stone. This would give black 42%. Even fancier black could attach at k4 first to make some kikashi and then kakoi.

Click Here To Show Diagram Code
[go]$$Bcm8
$$ ---------------------------------------
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . O . O X . X . . . . . . . . . . . . |
$$ | . X O O O X . . . . . . . . . X O . . |
$$ | . O X X X O X . . , . . . . . X O . . |
$$ | . . . . . O X . . . . . . . . X O . . |
$$ | . . . . . O . . . . . . . . . X O . . |
$$ | . . . . . . . X . . . . . . . X . . . |
$$ | . . . . . O . . . . 1 . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . X O . . |
$$ | . X O . . . . . . . . . . . O O X . . |
$$ | . . X O . . . . . . . . . . O X X . . |
$$ | . . X O . . . . . , . . . . O O X . . |
$$ | . . X O . . . . . O . . . . . X O X . |
$$ | . . . . . . . . . . . . . . . O O X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Instead black tenukid, and BensonDarr made some exchanges then reduced at the k14 sweet spot. LZ 203 would have just played k14 directly (because s8 was a slack answer to s7, thinks black can resist with q8 to avoid giving the sente moves from centre and can deal with s8 bad aji). Black was down to 36% now.

Click Here To Show Diagram Code
[go]$$Bcm8
$$ ---------------------------------------
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . O . O X . X . . . . . . . . . . . . |
$$ | . X O O O X 7 6 . . . . . . . X O . . |
$$ | . O X X X O X . . , . . . . . X O . . |
$$ | . . . . . O X . . . . . . . . X O . . |
$$ | . . . . . O . . . 0 . . . . . X O . . |
$$ | . . . . . . . X . . . . . . . X . . . |
$$ | . . . . . O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X 9 . |
$$ | . . 1 . . . . . . . . . . . . X O 8 . |
$$ | . X O 2 . . . . . . . . . . O O X . . |
$$ | . . X O . . . . . . . . . . O X X . . |
$$ | . . X O . . . . . , . . . . O O X . . |
$$ | . . X O . . . . . O . . . . . X O X . |
$$ | . . 5 3 4 . . . . . . . . . . O O X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Black obediently (-1.5%) answered the reducing move (resist with k13 attachment a little better, then a fight and sabaki), white jumped back and black attacked the shape at f3 (making sense of d2 choice over c2). However, white ignored (how it then settled the wall after black f5 jump was nice) and snipped off the h13 stone and black was down to 31%. What had started out with potential to be a large territory to the 8th line plus outward influence has been cut down to the 4th line, and white got strong (not sure I would say thick) in the centre to boot. All because of failing to play kakoi.

Click Here To Show Diagram Code
[go]$$Bcm18
$$ ---------------------------------------
$$ | . . . . . X . . . . . . . . . . . . . |
$$ | . O . O X . X . . . . . . . . . . . . |
$$ | . X O O O X X O . . . . . . . X O . . |
$$ | . O X X X O X . 5 1 . . . . . X O . . |
$$ | . . . . . O X . 4 . . . . . . X O . . |
$$ | . . . . . O 6 . . O . . . . . X O . . |
$$ | . . . . . . . X . . . . . . . X . . . |
$$ | . . . . . O . . . 2 . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X X . |
$$ | . . X . . . . . . . . . . . . X O O . |
$$ | . X O O . . . . . . . . . . O O X . . |
$$ | . . X O . . . . . . . . . . O X X . . |
$$ | . . X O . . . . . , . . . . O O X . . |
$$ | . . X O . 3 . . . O . . . . . X O X . |
$$ | . . X X O . . . . . . . . . . O O X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


* Ji Xiang 3p https://www.goratings.org/zh/players/1868.html


This post by Uberdude was liked by 2 people: Bill Spight, Elom
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