Versus de scachis, also known as the Einsiedeln Poem in some literature, is the title given to a 10th-century Medieval Latin poem about chess. It is the first known European text to provide a technical description of chess for didactic purposes and it is considered a fundamental document to understand the development of chess in Europe.

Chess is a board game for two players. It is sometimes called international chess or Western chess to distinguish it from related games such as xiangqi and shogi.