Life In 19x19

I noticed that AlphaGo doesn't like to plays this way with black (never played move 5 from the original sequence in any public/published games, and I never saw that move rated high in the teaching tool either).

Leela and AQ also don't like that move - both prefer black to extend towards the center instead in the Kobayashi game.

Thank you all for your help. I think the first time it was played against me, I connected the 3rd line cut, and he cut the other, and it ended up working really well with his opposite side,
and I didn't get so very much territory to compensate. I've had a chance now to play against this again, and connected on the fifth line, and tried to bring the action out in to the center. It worked reasonably well that way. I also played the attachment myself in a couple of games, to get a bit of feel for it from the other end.

The Kobayashi game is pretty instructive. I also like the high two-space pincer, I've been trying that out when my opponent has a strong/high position "behind" their approaching stone, to try and limit what they can gain. I'm not sure if this is really the correct idea; but it has seemed to work reasonably well so far.

A game today went like below. I was playing Black, and played the two space high pincer. I put in the attach-block joseki to compare. The corner and side would look pretty big, but for me it feels like W gets the better of the exchange; more potential and a position that is much more helpful in the fighting to come. Looking at it now, I also wonder if I shouldn't have played 7 on the other side; after he extends it hurts my large knights enclosure. I've only just started playing the large knights rather than the small one, so 7 got played without much thought (EDIT; I asked Leela, and it likes the other side slightly better)...

sorin wrote:I noticed that AlphaGo doesn't like to plays this way with black (never played move 5 from the original sequence in any public/published games, and I never saw that move rated high in the teaching tool either).
Leela and AQ also don't like that move - both prefer black to extend towards the center instead in the Kobayashi game.

I noticed that AlphaGo does like to attach end extend in some situations that human pros tend not to, probably rejecting it as crude (e.g. some Chinese opening variations, 2nd approach to san ren sei).

Btw zac, in that last game, I would think about q17 for black 23. If pincer I don't like white going into 3-3 and living easily as the p11/r11 stones are trying to make territory on the right side so black has no good side to block without some of your stones looking bad. q17 just says "corner is mine" without making white stronger so white probably defends the top side or else you can do things there later (in fact even after adding a move there are still things for black to do on top side). Attach and block is similar idea of making corner solid, but also makes white stronger which I want to avoid.