3-4 point low approach one-space low pincer press
A database search shows that only two moves, a and b are popular. AI analysis confirms. This page holds a chapter on both.
Making use of the double atari weakness of the double hane, , and is the perfect chance to take some profit at the corner. Then ataris and extends. If , then White a, Black b, and White gains sente to attack the lone Black stone at the top, perhaps at c.
may begin a complicated fight. is a tit-for-tat move.
Charles There are some variations here in which White starts by pressing at a (and presses more than once). Then White fights at , or the square or circle points.
A simple outcome of this is for Black to sacrifice the two Black stones in the middle and settle for an exchange.
and is another way. Note that at is a mistake.
increases the number of liberties of the dead stones for more aji, and is vital to prevent Black from making a very comfortable atari there. is a tesuji that exploits the aji from to gain profit, and is also a tesuji that minimizes the loss in the corner.