A matching card game

I saw the example where skills are matched with definition but I have a slight different request.  The user must turn two cards over and if they match they stay visible but if they differ both must turn back to be invisible.  I achieved the desired result BUT had to add a NEXT button which needs to be clicked after each attempt of two clicks.  Then the game works well BUT I want to automate the the action so that user do not have to click the next button after each attempt of two clicks.  If you do not click the next button after a matching attempt the whole thing stops working as planned.  Any help please.