First Doctor-Marco Polo chess match
From Tardis Wiki, the free Doctor Who reference
At a Gobi Desert encampment, Marco Polo challenged the First Doctor to a game of chess, having just beaten Ian Chesterton. The Doctor won the match after just 26 moves.
Weeks later, while encamped near Su-Chow, the Doctor challenged Marco to a second game of chess. This time, Marco won on the 35th move. After the match, the Doctor congratulated Marco, insisting upon a rematch the next evening at the Su-Chow way-station. Marco corrected him, stating that their next stop would not be for ten days, in Kan-Chow. (PROSE: Marco Polo)
