This variant of mancala was invented by Arthur and Walt Amberstone and first published in Sid
Sackson's great collection "A Gamut of Games". Opponents sit opposite
and interact only with the containers on their own side. Those
containers are a stack, at bottom; a pot, at right; and a row of cups,
in the center. Only two kinds of move are possible:
(1) sow beans from one cup, one bean at a time into the cups to its
right, ending exactly in the pot.
(2) sow beans from the stack, one into each cup starting with the
left-most and working to the right, ending with any other cup;
For move type (1) exactly the correct number of beans must be in the cup
so that none are left over after reaching the pot. For move type (2) if
the final cup reached with the last bean had been empty the player
captures the opponent's stones directly across from it, and these are
placed in the player's pot. If a player has no possible moves he must
pass, and when both players have passed the game ends and the player
with more beans in his pot wins.
In this implementation moves of type 1 are made by simply clicking on
the cup you want to sow from. Type 2 moves are made by first clicking
on your stack, then on the cup you want to sow to, i.e. cup
that gets the last stone.