
TURN  On each turn, each player
drops a friendly stone on an empty cell.

If a diagonal line is full (i.e.,
there are no empty cells on that diagonal), the player who dropped
the last stone achieves so many points as the number of friendly stones
on the finished line.

Two lines can be finished on one
turn, the player achieves points for both lines (the dropped
stone counts twice, once for each diagonal). 

A diagonal line must have at
least 2 stones. So, corner cells do not count as diagonals. 



GOAL  When all cells are occupied,
wins the player with more points. 
