Systematic Joseki 4-4 3-3 3-4 4-3 5-3 5-2 6-3 6-2 7-3
Keywords: Joseki
Summary - Joseki - San san under Hoshi in a general case.
Black stays atop and ahead.
This is the standard joseki discussed at 33 Point Invasion.
White can play at a? which's normally sente.
White can also tenuki? and live but it allows Black to have a sente move at c.
White doesn't normally play b? right away because it's low, pushing from behind and because it's not too urgent as it isn't sente for the opponent.