Pieces must capture if in a position to do so, and if further captures are then possible, these must be performed too. This rule is extremely important, as will be realised after a few games, since it enables a player to force his opponent into disadvantageous situations.
The following example illustrates this:
1. White sacrifices a soldier.
2. Black is forced to capture it.
3. This sets up Black for an attack by White.
4. White captures, liberating a prisoner.
Further captures can produce columns containing large numbers of men, and theoretically the game could end with all the men in one column although in the author’s experience this has never happened.