This is a chess set, with one of each type of piece represented. It can double as a castle building toy, with the walls and towers interlocking for a seamless defense.

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For chess, the pawn is the wall section; the tower is the rook; the rounded roofed buiding, a barracks, is the knight; the pointed roofed building, the chapel, is the bishop; the square castle, the keep, is the king; and the rounded castle, the palace, is the queen.

The wall sections are intended to connect flush to the tower for a seamless defense, though this may need some adjustment as there is no tolerance allowed for so far in the design.