Interesting. White (Leela) played sanrensei, too.
White played a kakari at o17 but black played the narrow pincer which broke the symmetry. After the corner exchange white played kakari at the market stone.
Black has several options. One is to play the kosumi at r5 after which white builds a group between the black stones at the star points. Another would be to trade the corner for a wall by playing r8. If thise were a handicap game, r8 would be recommended. White would take the corner. Building a wall on the broader side by starting at r4 would be recommended.
Clever of white.
This is already good for white.
I think it's best to play on top at b4 and let white create a small group at the bottom.
Holy moly, white is in real danger of dying!
Now it's looking dangerous for black. Both small groups are in trouble. But there could be a way out. The push up at j6 seems the only way.
It's blacks turn and black gets to take the ko.
Now black has to pay the price for winning the ko.
White won.