Add additional details about what chess is
Isidore Censer was a Belgian chess player.
Isidore Censer was a Belgian chess player.  Chess is a board game for two players, called White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's king.
<START_INST>Add additional details about what chess is<END_INST><START_CTX>Isidore Censer was a Belgian chess player.<END_CTX><START_A>Isidore Censer was a Belgian chess player.  Chess is a board game for two players, called White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's king.<END_A>