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 Post subject: thequietcenter (10k) vs Ryan CHENG dad (9k) - please review.
Post #1 Posted: Wed Mar 30, 2022 3:23 am 
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OGS: thequietcenter
Hello, I played as Black and lost this game. I would appreciate a review:

https://online-go.com/game/41410154

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 Post subject: Re: thequietcenter (10k) vs Ryan CHENG dad (9k) - please rev
Post #2 Posted: Wed Mar 30, 2022 9:03 am 
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For :b41: I think the first instinct should be to jump to G6, because the topic there is the relative strength of the black and the white group on the left. If you jump, the white group is weak, and it feels scared of the black strength along the top. If White gets to jump first, it puts pressure on the black group, and the black strength at the top is less useful.

At :b49: it is a similar situation. The black group is still not strong. White can enclose it with e. g. N4, and then the black group will struggle to survive, while White gets strong on the outside and keeps sente. You should e. g. jump to O5 to prevent that.

:b73: is not needed at all, it is a pass.

:b147: doesn't threaten the white stones below, so Black should better seek life elsewhera, and also White shouldn't answer it there.

:w154: doesn't threaten the black group, so Black is free to make a much bigger endgame, e. g. hane and connect in the top left. White similarly shouldn't answer at :w156:.

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 Post subject: Re: thequietcenter (10k) vs Ryan CHENG dad (9k) - please rev
Post #3 Posted: Wed Mar 30, 2022 11:44 am 
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I've played "Ryan CHENG dad" before but it was quite a while ago. I think this player is good. Actually, I can see from his rank-over-time that he has previously been 8-6 kyu. So no worries about a loss to them.

--Upper right corner deviated from the usual variations that I see. I often see the double-hane (S18) variation or the atari at R15 to swap.
--Upper left corner: you added a stone to cover the cut but that was not urgent. It's still early in the game and plenty of open board. Plus, you have the 2 friendly stones in the upper-middle to help with a cut. Imagine if you had just extended along the left side instead. I know that top pros do not add stones to a wall when they could approach or 3-3 instead but the game can become much easier to play if you just add 1 stone, like D10 (or even C9, maybe too safe).
--B39 attacks the White stone and building a framework with the wall but it makes me scared for the Black stones below. You should not just abandon them at B41. I'm no pro but my impression is that this group will have trouble living or live very small if surrounded.
--Lower right corner. Maybe better to invade the 3-3. Then the whole sequence seems off. Black slides and plays on the 2nd line but really just needs to jump out, but Black plays away. Imagine if White attacked and chased from the bottom or the top. They would build a territory without trying while Black runs.

Overall I'd say it was a good game and could have been close. Also, I think the opponent is under-ranked like I said.

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 Post subject: Re: thequietcenter (10k) vs Ryan CHENG dad (9k) - please rev
Post #4 Posted: Wed Mar 30, 2022 6:43 pm 
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Posts: 86
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OGS: thequietcenter
Thank you both for your review.

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