The dollar coin with Sacagawea has a copper core clad in an alloy of copper, zinc, manganese, and nickel, giving the coin a golden color.   Goal: Get 3 of the same pieces to be on one straight or diagonal line in order to remove them. Directions To start a new game, click on the New button. Use left and right arrow keys to move a piece. Click in the game area if the keyboard doesn't seem to respond.