Jump Jack is played on a 7x5 square board.Each player starts with 5 stones(Soldiers) on the second row,a neutral stone(Jack)starts in the middle of the fourth row. The Jack can only be moved by jumping over any other stones on the board.The Jack can jump over one or more stones in a straight line(orthogonal or diagonal)and can continue to jump,if possible(but it is not mandatory). Soldiers can move one space in any direction or they can jump as the Jack.Soldiers cannot jump over the Jack. Each player is allowed to have one soldier at his first row,and cannot move any stone to the opponent´s first row. At each turn,each player can do just one ot the following: 1.Move a soldier one space; 2.Jump with one soldiers; 3.Jump with the Jack. The player wins who gets the Jack to the opponent´s first row.