catches three white stones in a connect-and-die. (If White tries to connect, Black will capture five White stones and live with an eye around and an eye at .) So White catches two black stones in a snapback with , and captures the three White stones.
Note that , trying to save the two black stones from snapback, is a failure. In fact, it is a good example of dying in gote. It is not even seki since White can eventually capture the four black stones on the left; if Black connects at a then White can almost fill with a bulky five and Black is still dead.