The objective of the game: Leave just one peg in the center.
To remove a peg, jump over it checkers-style in the horizontal or vertical directions.
Click on a peg to select it. Click on a hole to move the selected peg to the hole. The jump must be legal.
Click on a different peg to change your selection. Click on an illegal hole to clear the selection.
Special challenge: Click on "Use Special" and then leave the blue peg in the center hole.