The 'dark' pieces have been made using six different woods.
Rook - douglas fir treated with diluted tung oil.
Knight - zebrano [aka zebrawood].
Bishop - walnut.
King and Queen - oak treated with diluted tung oil.
Pawns - body is ebony, head is dyed beech.
The pieces have been designed according to their direction of travel. A rook can move forwards, backward or side to side. A knight can move one square forwards, backward or side to side plus one square diagonally. A bishop can move diagonally.
The king and queen can move in any direction. Their direction of travel has been indicated by their bases, rather than by the shape of the piece.
The 'light' pieces have also been made using six different woods.
Rook - maple.
Knight - lime.
Bishop - cherry
King and Queen - spalted hornbeam.
Pawns - body is ash, head is beech.