If the previous pebble also fell into an enemy pit with one or two pebbles, these too are captured, and so on until a pit is reached where no capture is made. The game continues until two players in succession can no longer play, or in the two-player game until one player can no longer play, or until the players agree that no further captures are possible. The player who has captured the most pebbles wins. In this version, whenever a player captures pebbles he also captures the pit that contained them, replacing the marble that marked its ownership with a marble of his own. Then only the capturing player has the right to sow from that pit, until and unless another player captures it again.
Pits change ownership frequently.
When the game ends the winner is the player with the largest number of pits, or in case of a tie, the largest number of pebbles. The idea of capturing territory as well as loot is an intriguing one and could be explored further. As far as I know it is no longer published, though one could improvise equipment easily enough.