Second line capture

Capturing on the second line  

The second line capture, as illustrated by , is one of the first basic edge patterns to occur to a beginner. Other names for this pattern include chapel and second line trap.

The chapel  

The white stones are captured. This is in fact also an example of a ladder.

The chapel  

So, the beginner learns that the descent doesn't save the stones. That does not alter the fact that is sometimes a good move, in particular to destroy eye shape as in the two stone edge squeeze. In some cases, neighbouring white stones mean can save the original stone.

Second line capture for an eye  

A second line capture often (but not always) allows the capturer to create an eye at the captured stone. In this example, captures the stone and ensures life with two eyes.