BQM184
I'm guessing that it's because Black can push through and cut and get a better result with this than with other pincers, but I'm not sure. That's the question.
Charles If now White a, Black b, White c, Black d, White looks heavy. It seems, in contexts where White does play the press, White has some other way to fight after in mind.
In a couple of pro games, this is played when the marked stone is already in place. Perhaps this helps.
Anonymous: I am confused. Is this the intended diagram?
Bill: No, it is a comparison diagram. When Black has played the stone, instead of the high pincer, is joseki.
Chris Hayashida: Michael Redmond discusses the move in his commentary on the first game of the 1st Quzhou Lanke Cup Final, Game 1, between Shin Jinseo and Gu Zihao.. He says that it's more tactically complicated, and the variations cover a quarter of the board.
After , White can cover at a, jump at b, or cut at c.
Dieter: indeed, these variations are explored on josekipedia.