...but merely lose, and as the universal advice here seems to be "no, really, post your games, no matter how awful", here you all go.

Comments are very welcome; I see #23 as a poor response which invited the mess in the lower-left corner in the first place (but I am not sure what is best), and perhaps #45 would better have been played as taking the lower-left group and leaving my pair to die.

I've anonymized it slightly (though it wouldn't be hard to find; the game was played online), but I am also curious if calling out one of one's games is considered rude without asking the other player first, or if I'm worrying way too much about it all and should have just linked to the original sgf.

is ok, but should have been played at
perhaps even better would have been to play at

Yes, I believe that was the game losing play.

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

In your variation 21 should be hane on the right I think. White can make a ko but black takes first and white has no ko threats.

White can ignore and play hane on the left. Even if White does not play the ko and connects, Black has to defend because Black's bottom left territory is bigger than White's top right territory. Then White defends top right and the result is the same as in the game.

_________________
La victoire est un hasard, la défaite une nécessité.

Thanks, all. With hindsight, 19 does indeed look pretty bad--interestingly, I remember looking at things at the time (with sente, and generally a lot of freedom to do whatever) and evaluating the upper move as perhaps the beginning of an attack on the entire upper right corner. At this point, though, I'm not seeing how that could have possibly worked!

Now of course I want to give it another go. Addictive game, this.

Isn't 44 bad, and blacks response worse?

Hi Nial, yes, we're all learning to see ataris.
It's a never-ending growth curve.