Beginner Exercise 90 / Solution

White lives with 1  

Lonestar: White can live with a throw in.

White captures  

puts black in atari. Connecting at is a mistake, because guarantees a loss of five more stones.

This would not have been possible without the throw-in above, because white needs to reduce black's liberties first.

In Learn To Play Go, this is called a pin, though it's more generally just a case of connect and die (oi-otoshi).

Works.  

This sequence works because white can play .