Sow and Erode

Board;
The board is four concentric circle with 16 space each (aka a Byzantine Chessboard).

Setup:
The 32 Black and 32 white pieces are alternated like a circular checkerboard.

Rules:
This game is a two player abstract strategy game in the Mancala family. As players sow their pieces, the board position "erodes" and leaves the players fewer and fewer options, and more and more spaces to sow pieces into to be removed from the board.

Object of the game is for a player to capture more of their opponent's pieces than their opponent captured of theirs.