Ruy Lopez, Exchange Variation Qf6 7.Qd3. There are two "ECO" classifications for the Exchange Variation. Bibliography Ruy Lopez, Exchange Variation The Exchange Variation of the Ruy Lopez is a chess opening that begins with the moves: Black may recapture on c6 with either pawn; although 4...bxc6 is playable, 4...dxc6 is almost always chosen at master level. Black has gained the at the cost of a weakened pawn structure, due to his doubled pawns on c6 and c7. White aims to reach an endgame in which he has the superior pawn structure, which may become an important factor. Thus, Black is compelled to strive for
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