It won the 2001 8x8 Game Design Competition, even though the game was originally played on a 7x7 board, as it is trivially extensible to larger board sizes.
A piece may move one space straight or diagonally forward if the target square is empty.
In the second diagram, the white piece on c5 can move into any of the marked squares.
A draw is impossible[2] because pieces can only move ahead (or be captured), and the piece closest to the opponent's home row always has at least one forward diagonal move available.
[2] Generally, an effective offensive strategy is to recognize and attack "pivotal" pieces which are in positions to block multiple routes to victory.