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My KataGo 28-block net (= "28b") likes to initiate the Hanezeki Exchange with (or at ) very early. This gives Karl's 40-block net (= "40b") the chance to block at , breaking through Black's encirclement.

White may have exchanged for before.

Black may have inserted the exchange of for before.

Exchanging for before or after is just a simple CHITOOM (change in the order of moves).

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White does not play the usual move of at the outside, but catches up with the Sagari at in the corner.

Black takes the opportunity to play at , so capturing White's four stones below, instead of connecting his two stones at the right edge with as usual.

Black exchanged for in the upper right corner before.

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White just connected at in the corner.

Black takes the opportunity to attach at , so capturing White's four stones below, instead of connecting his two stones at the right edge with as usual.

Black may have exchanged for in the upper right corner before.

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White kept the connection at in reserve.

After Black's Atari , White takes the chance to block at at the outside, instead of immediately connecting her nine stones at the right edge with .

Usually, Black would have played at the point of himself, instead of trying to trigger the Hanezeki Exchange at the right edge.