Backgammon
Backgammon is one of the oldest known board games. Its history can be traced back nearly 5,000 years to archeological discoveries in the Middle East, originally in Iran. It is a two player game where each player has fifteen pieces ("checkers") which move between twenty-four triangles ("points") according to the roll of two dice. The objective of the game is to be first to "bear off", i.e. move all fifteen checkers off the board. Backgammon is a member of the tables family, one of the oldest classes of board games.
Salamis Island
The oldest known counting board was discovered on Salamis Island in 1899. It is thought to have been used by the Babylonians in about 300 BC and is more of a gaming board rather than a calculating device. It is marble, about , and has carved Greek symbols and parallel grooves.