四子棋对战

This is a centuries-old puzzle game, said that when Captain Cook used it to pass a long time sailing on the way. Four sons chess learn difficult to master, the game the two sides take turns each put a piece into any row of the board is not completely full, the piece will occupy the position of the bottom row unoccupied. Any party associated first with four pieces in horizontal, vertical or diagonal direction in a straight line, you can win, the game also ends. If the board has been completely filled with pieces, but do not have any party successfully put four pieces in a straight line, it becomes and the Council.