Similar to a Matching Game
<p>I want to do something, where I will have 4 buttons. There will only be a success if 2 matching buttons are pressed. At the moment I only know how to handle one button click, but I don't know how to make it so that if I press a button, and then afterwards press another button.. a fail or success occurs depending on the button pressed.</p>

<p>What would  I use to go on about implementing this?</p>
