Ruy Lopez that after the common retreat 4.Ba4, Black will have the possibility of breaking a future pin on his by playing ...b5. White must take some care not to fall into the Ruy Lopez, Noah's Ark Trap, in which Black traps White's on the b3-square with a ...a6, ...b5, and ...c4 pawn advance on the . Ercole del Rio, in his 1750 treatise "Sopra il giuoco degli Scacchi, Osservazioni pratiche dell'anonimo Modenese" (On the game of Chess, practical Observations by an anonymous Modenese), was the first author to mention 3...a6. However, the move became popular after it was played by Paul
World Chess Championship 2014 an easily drawn endgame. The ninth game was played on 20 November 2014. The opening was the Berlin Defence of the Ruy Lopez. The game was drawn due to threefold repetition on the 20th move. This game included no original moves. The draw meant that Carlsen was closer to converting his 1-point lead to a match win, though Anand seemed satisfied to draw early and focus on his two remaining games with the white pieces. Although a short draw at 20 moves, this game is far from the shortest in match history; a pair of 10-move draws sealed Petrosian's match