If you moved <BD>a2-g6</BD> your board looks like the one on the left. Click on any of the current player pieces to observe its legal destinations. <BD>Pawns</BD> and <BD>Kings</BD> move in the same manner, so feel free to move different pieces.
<IT>Strategram</IT> has a built-in <BD>Referee</BD>, which determines whether a proposed move is legal or not and acts accordingly.