Two medieval Italian board games enthusiasts collected chess, tables and morris problems (the manuscripts Bonus Socius, before 1300, and Civis Bononiae, 15th c. [Fiske 1905:104, Murray 1952:118]. No trace of draughts. For this reason many a board game historian was/is sceptical about the existence of draughts in the Middle Ages. It was impossible, however, to enter any draughts problem: without the obligation to take combinations in draughts are impossible. Draughts problems only came into being in the 15th c. AD, after the introduction of the rule that capture is obliged.

Page from Bonus Socius [Yalom 2004:74]