Random sequence

time for another random move
(so, 5k again? If you don't understand the diagrams you can read and try to grasp what I wrote too.)

This is one of the first josekis I learned.



some 20 moves later...



When black plays 26 (the stone is not cut off, it's just your imagination), it would be honte for white to answer at 28. If he decides to tenuki and do nothing else, black can do this trick.


If the ladder works for black, white can only connect to the peep like this. And thus black connects underneath, robbing white off his base and white becomes what you call floating in mid-air.


Where is the ladder?



That is, when white plays kosumi-tsuke with 4 preventing black from connecting underneath. Of course black cuts with 5 and w's sagari with 6 is the tesuji for the corner's capturing race. Since black would lose the semeai if he just takes liberties, he breaks out with 7 and it becomes ugly.
Up to b 13, if the ladder at B works for black, white cannot cut with A. So when black gets to connect at B eventually, the white stones in corner die a natural and peaceful death.
But even if the ladder doesn't work for black, black can settle for an exchange by playing 13 at 11.

Nothing new so far:)

Now we change one stone in the joseki. Black extends with a keima instead of the two-point extension (6 in the very first diagram).



By shifting one stone, if white cuts directly at A, black can play the ladder of 12345 with the help of the triangled stone even if there is the starred white ladder breaker.
Black thinks he is smart, but there is a way for white to outwit black's plan...



Now black should pretty much be swearing again.



Because if black connects to white's attachment, the long awaited ladder has been obliterated.