It is currently Tue Apr 23, 2019 3:17 pm

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 25 posts ]  Go to page Previous  1, 2
Author Message
Offline
 Post subject: Re: 23rd LG Cup
Post #21 Posted: Wed Feb 13, 2019 9:24 am 
Beginner

Posts: 4
Liked others: 1
Was liked: 0
Uberdude wrote:
So we get a decider! The 2nd game featured a popular modern joseki at top left (and I played in my last tournament game) which ends with white getting a big corner and black a wall plus ponnuki. I was somewhat surprised Shi then 3-3 invaded at the top right as the resulting top side seemed pretty large and efficient. Is this a case of a bad 3-3 invasion? it's all the rage these days but usually that's because the resulting wall is either inefficient or attackable (or teasable with p14 peep) later but that didn't happen this time and it just made a huge territory. Or was 3-3 ok but subsequent reduction or lack thereof the issue?


If we look at the game from the vantage point of AI, then B has a fairly clear advantage, and W should reduce. However, I think maybe this was Shi Yue's strategy, to give B what he wanted but to keep the game close enough to still win. It didn't work out, but clearly at the end the game was still quite close. I think this sort of "deceptive" strategy can work in human games where mistakes can be made, and where overconfidence can be leveraged as a strategic ploy. The AI always seems to have all of the answers to anything, so of course that doesn't work against an AI. :)

Top
 Profile  
 
Offline
 Post subject: Re: 23rd LG Cup
Post #22 Posted: Wed Feb 13, 2019 12:45 pm 
Dies in gote

Posts: 67
Liked others: 9
Was liked: 7
Rank: SDK
Uberdude wrote:
So LZ201 (with low playouts) thinks the 3-3 was fine (-<1%, q14 high approach another interesting idea, don't often see those, f12, r3 other choices), but that o3 approach was -5% and it was urgent to reduce:
Attachment:
Screen Shot 2019-02-13 at 13.50.51.png


I also tried this with network f438268e with a lot of playouts, and it initially thought of the high approach(which I also thought was interesting), but it eventually settled on either approach or the 3-3 invasion to the bottom right corner. It also felt that the 3-3 invasion on the top right was relatively okay(1-2%). Maybe it's because the M11 reduction is so good.

Top
 Profile  
 
Offline
 Post subject: Re: 23rd LG Cup
Post #23 Posted: Wed Feb 13, 2019 11:33 pm 
Lives in sente

Posts: 1227
Liked others: 0
Was liked: 492
Final;
3rd game,
Yang Dingxin defeated Yang Shi Yue by resign.

Yang Dingxin is new LG cup Champion.


This post by trout was liked by: Elom
Top
 Profile  
 
Offline
 Post subject: Re: 23rd LG Cup
Post #24 Posted: Thu Feb 14, 2019 3:31 am 
Lives in sente

Posts: 888
Location: UK
Liked others: 67
Was liked: 460
Rank: 5 dan
KGS: macelee
Yang Dingxin just sets an interesting record: after winning game 2 yesterday he was promoted to 8-dan (because of winning enough games as 7-dan). And now he is a professional 9-dan after winning this major title (due to China's special promotion rule). He was 8-dan for only one day.


This post by macelee was liked by 5 people: Bill Spight, Elom, ez4u, gamesorry, yakcyll
Top
 Profile  
 
Offline
 Post subject: Re: 23rd LG Cup
Post #25 Posted: Thu Feb 14, 2019 3:52 am 
Judan

Posts: 5696
Location: Cambridge, UK
Liked others: 321
Was liked: 3012
Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
I really liked Yang's reduction of lower left corner, and in sente to boot! (Though he did soon come back to save the tail stone). Seemed quite AI like to me.

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 25 posts ]  Go to page Previous  1, 2

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 4 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group