I lost a game (to Josef Renner a EGF 2d player) and I really would like your opionon about the game. I played black.

HEy good old Josef is still playing : ) ? I stayed with him in the same house at last egc, it was such a great time. If one of you got the chance to taste josefs fried breakfast: DO NOT HESITATE.

I'll give some comments later when I'm at home.

If you play to the end, you should also count the result.

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A good system naturally covers all corner cases without further effort.

Harleqin: Agree with you. This was a turnbased game and the scoring phase take still another day so I thought I could spare him that. W+6,5.

Move 17 seems a bit casual. You have sente and you give it away for a small net gain. K3 invites M3, and then white is getting almost as much as black. I'd play M3 as black, which cramps white and threatens the clamp at P3.
Move 35 is small. A move around K17/L17 is bigger, and indirectly threatens his right side group.

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Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207

I agree. I think C12 is pretty important at 17 to be honest.

yes, 17 is a bit lukewarm. M3 is a more positive move, agree.

C12 is of course a good spot too... hard when there is more than one choice. I wanted to prevent white from playing kakari (at F3), that was the main reason for playing bottom. But that might be the wrong thing to do.

If you play C12, I would be happy enough responding to F3 at D6, and White must protect on the bottom, giving you free reign to take the biggest point you can find on the top edge I think your left side is at least as good as White's bottom side, and you get sente. It feels like K3 is too focused on what you think your opponent might want to do as opposed to what you want to do