This is round 3 at Colorado Springs. I was black. I came out of the fuseki quite well, I think, but then misread and lost. The amusing part is 35-45. Even then, I still could have made it a game with a better move at 69.

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I don't think you had a good fuseki at all. The five stones in the lower right are doing very little. They have solid white group above them and too much room below them. There is no way you can protect all that bottom territory and make that center group live. Just living in the center without giving away huge influence will be tough enough. I think this is clearly a lost game for black.

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Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).

I agree with Dr. Straw - odd fuseki is odd.

After move 21 you can each count about 15 points, probably. At the point where you say you think it's a won game, I count ten for white and somewhere between zero and five for black (komi not included.)

White has an attack developing on your stone, and you have lots of influence on the bottom with no way to use it easily; an invasion at the bottom should still live (although black will probably get another 10-15 points from enclosing it) even at the final diagram. One more move on the bottom will make 30 points or so of territory, but white gets to make at least as much on the top.

At move 13, I count zero for both W and B on the board.
However, at the start of a 9-stone game, it is also zero for both W and B --
so the score in itself is insufficient info.

Nonsense - the handicap stones are obviously white's prisoners.