The aim of chess is checkmate. There are different types checkmate (smothered mate, Anastasia's mate etc.) Smothered mate is when the king is surrounded by his own pieces and a knight which can jump over the pieces. Another mate is called back rank mate where three pawns are in front of the king a rook is own the same rank as the king and can be avoided by moving the H pawn so that the king has somewhere to go. 2 move checkmate is the quickest type of mate and only takes two moves to accomplish.