Copyright (c) 2004 Markus Salo
This game is played on a 6x4 square board with the following setup:
|Some capture examples
Black stone at c2 is already moving home. White must promote his stone at b4 to c6 in order to stop c2.
Then Black moves b6-c4 with a reply c3-d5! (capturing d2:c4 is a bad move, Black can reply d6:c4), c4:d2, d5-b6 (a sacrifice to promote another stone), d2:b1, b6-d5, c2-a1, d6:a5 and White wins the race.
There is a ZRF to play Grensholm with Zillions.