Nagilum wrote:$$Bc Considering the Direction of play: Where is the better move for black, "a" or "b" ?
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- Click Here To Show Diagram Code
[go]$$Bc Considering the Direction of play: Where is the better move for black, "a" or "b" ?
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Hi, recently a similar position has arised in one of my games. Black to play. In the game i played on "a", but a three-dan has advised me to play at "b" because the group in the lower right is already stable. (Supposing that i wanted to play in the lower right) I know the principle "Play away from (your own) strength, but i also know the principle "Make your stones work together." In a position like this, i am not sure if my interpretation of these principles are correct, because it seems to me that they create sometimes a conflict in my thinking. Or is the choice of "a" or "b" in the end a matter of style?
At the moment i think that i can interpret a move on "b" also a large-scale cut between the lower and upper left side. That seems a positive fact, but on the other hand i haven't big territory prospects after that. Sometimes i have similar questions when i ask myself how to use a wall correctly in the opening phase,
Here, a is fine. b is less normal locally, because a does work quite well with the lower right.
However, the position is far more complex than that. Black's bottom right position is certainly very strong; he can tenuki many times and white cannot kill it. This gives it a very low priority. He can develop it with your move at a, but if the board is fairly empty is is very possible (perhaps probable) that he will find it more interesting to play somewhere else altogether. The move at b might work well with a different position later.
I did a bit of database fiddling. It looks like a is far more common in the context of the bottom side only, but this is sligthly misleading. Your position is bad for white because he has invaded the chinese fuseki too early and been attacked into having no territory there. This hasn't ever happened in the GoGoD database because a pro would not play this way (or, actually, there is one game where white invades but this is an amateur 3d playing an amateur 5d, presumably not knowing better).
Looking at a similar position without the chinese fuseki:
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- Click Here To Show Diagram Code
[go]$$ More realistic position.
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This position is a little more common (although the top left is not a common joseki in this position). Now there are games with black white playing a straight away but, in keeping with my above comments, he finds it more interesting to approach the bottom right generally. Similar results are found if the bottom right is a 4-4 point instead. There is even a game where white plays b.
Above anything else, I'm sure it is safe to say that this kind of decision will not be the game losing move

like in this example, White to play:
$$Bc Considering the Direction of play: Where is the better move for white, "a" or "b" ?
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- Click Here To Show Diagram Code
[go]$$Bc Considering the Direction of play: Where is the better move for white, "a" or "b" ?
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Again, i could not make a clear decision. "Force the opponent towards your strength" vs "Make your stones work together". I think i would play 'a', because a black play in this area would prevent a good use of the wall, at least in my judgement.
I am not sure if it is good to compare these two examples, but they produce a similar conflict in my thinking.

So, what do you think?
Thanks for your advice.
Here, white's shape gives him many options. He can play b, if he wants to develop that side somehow, but a is also fine. If he just wants to settle, c is another option. Both plans are good here (though be careful with pushing your opponent towards your 'thickness', white may be vulnerable to attack later). I don't think there is a clear advantage to a or b here.
I say this in the context of the top side of the board only. In the exact board position you have suggested, b is a little more than twice as common as a, but this will be very dependent on where the bottom two (or more) stones are placed. Both moves are clearly fine.