Copyright (c) 2003 Joćo Neto
The game starts at following hexagonal board (the central stone is called the neutral stone). There are also enough one color stones off board.
If the player drops at the green cell he wins the game by moving the neutral stone to one of his edges (assuming that the player owns that edge).
That dropped stone will belong to a group of 4 stones, and so, the player may push the neutral stone four cells west, away from one of the group stones.
Instead, he cannot drop at the red cells, because in that case, the neutral stone would need to slide exactly 5 cells and there is not enough space to do that.
|Stalemating the adversary
South dropped the marked stone, stalemating North and winning.
North dropped the marked stone and wins the game(!). South cannot do anything to stop the neutral ball reaching the SW edge.
|A winning path
South drops the marked stone. Now all the next moves, moving the neutral ball from  to  are the only possible ones (can you find where the players must drop their stones), giving a victory to South!!
The last 3 examples where taken from actual games.