High Chinese Opening / Review With AI

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[Diagram]
High Chinese  
[Diagram]
3-4 approach  

LeelaZero's preference is to play the approach of W1. It offers this settling sequence, with a-b-c as a local continuation and Black taking sente to play d.

[Diagram]
3-4 approach  

The approach is also KataGo's preference but Black's response is different, so that White moves out rather than settling locally. Black gets territory and sente to play B8.

[Diagram]
Outside approach  

LeelaZero's second choice is to approach at W1, upon which Black switches to the opposite corner 3-3 invasion, a common pattern in AI opening.

[Diagram]
Outside approach - KataGo  

KataGo likes the approach here 1 pt less than in the lower right. It comes up with this redeemed attach extend joseki.

[Diagram]
3-3 invasion  

The 3rd choice is a 3-3 invasion. Black uses sente to enclose the bottom right with B6. White does NOT move to the opposite corner but instead checks the framework with W7, which has a traditional veil. B8 of course does switch to the upper left for another 3-3.

KataGo is more appreciative of the invasion, which it ranks 2nd. It suggests W7 as an enclosure of the lower left (any of 2 directions). In general KataGo likes corners even more than LeelaZero, it seems.

[Diagram]
Attach  

An idea which may not be novel but certainly got more exposure by AI play, is the attachment at W1, resulting in this trade-off of 4th line territory vs influence on the lower side. White 11 would be played at a.

[Diagram]
Attach  

This is KataGo's sequence resulting from the attachment.

[Diagram]
Traditional check  

LeelaZero comes up with the traditional W1 to keep Black's development in check, with B2 and W3 as common answers. Both enclose a corner from a 4-4, then Black approaches. This variation is evaluated as -4% compared to the approach at B2.

KataGo plays B4 at B8 right away. It evaluates this sequence as a 2 point loss compared to the approach at B2.


High Chinese Opening / Review With AI last edited by 213.89.125.245 on April 7, 2021 - 21:44
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