We have an old thread about how best to defend against them, and a newer one about whether or not they’re “wrong”, but not a basic space for posting and discussing them.
I wanted somewhere I could post this diagram from 2006, that I found on Bruce Wayne’s SL page.
He explains:
③ and ⑤ are trick plays. ④ is a correct response but if B plays ⑥ to try and capture the corner then ⑦ uncovers the trick. The W group in the corner is alive while B is without a base and already pressured.
However, Bruce doesn’t say where he believes ⑥ should be.
…f16, a one space jump from 2 attaching to the centre-facing side of 5. Gets the black stones out, and attacks 3 by leaning on 5. Expect white to follow up with hane at g16, then black f15.
I dunno if that’s a good idea. I am 6-7 kyu but that’s my idea anyway
Although 7 is a good tesuji for miai connection to know, black is still fine in that position, and actually doing a little better than if White had played a usual joseki after the shoulder hit (that’s why it’s not joseki). However, although this position is objectively bad for white, it is still a treacherous position and it’s easy for black to make a mistake in the continuation which would give White the lead, particularly if White has studied the follow ups. Quite a lot of unusual moves are like this: bad if the opponent answers correctly, but could end up good if they mess up.
