4-4 point low approach low extension, slide, 3-3, tenuki
Keywords: Joseki
In this position, it is considered to be a mistake for White to play out the exchange of for
and then play tenuki: the attack with
is severe. It is better in principle for White to leave out the
/
exchange, which is typically a thank you move clearing up the question in Black's mind whether White can later invade at
.
4-4 point low approach low extension, slide, pincer, tenuki deals with the resulting position (by transposition).
What is said here is another example of the 'misplaced slide' as discussed on the go bloopers page.