Sickle cell acute chest syndrome: patho-genesis and rationale for treatment

A game board apparatus is disclosed which is particularly adapted to stimulate interest in the game of chess. A chess board and two model castles are supported by a base having moat-like trenches adjacent opposite marginal edges of the chess board. Each model castle is disposed at a respective playing end of the base and separated from the chess board by the adjacent moat. Each has a pivotally mounted drawbridge extendible across its adjacent moat.