Easy Tsumego Answer

This is the answer for easy tsumego .


The throw in at is the key move here. White can't create an eye with M19 since it's a self atari. After capture at 2, A and B become miai for black and white die.
If white play O16 instead of capturing, then black will play another throw in at N19.


Black can't play 1 first in the diagram above, since white will play 2 and the throw in at A doesn't work anymore.