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I need some insight; The 63rd NHK iGo Tournament Quarterfina
http://www.lifein19x19.com/viewtopic.php?f=10&t=13889
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Author:  Katharsys [ Wed Dec 21, 2016 1:01 am ]
Post subject:  I need some insight; The 63rd NHK iGo Tournament Quarterfina

https://youtu.be/zUMiMDFXdps

I played through this game on my own board and blah blah blah but what I want to know is why did Iyama Yuta resign?!



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Author:  EdLee [ Wed Dec 21, 2016 2:32 am ]
Post subject: 

Hi Kath,

I didn't do an accurate count -- did you ? --
My feeling is W must win the ko to stay in the game,
but Mr. Iyama must have counted all the remaining ko threats
( and so did Mr. Kono ), and decided W couldn't win the ko.

( My guess: W has only 1 threat left at C6,
but B still has A18, and W runs out of threats after that. )

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