The game became very tense with Carlsen consuming a lot of time. He played 38...Ne7 with less than two minutes on his clock, against Karjakin's 25 minutes. Karjakin invested most of the 25 minutes before making the bishop sacrifice 39.Bxf7+, when 39.Qb3 was also very strong and possibly even winning. In spite of his time situation, Carlsen defended accurately. In the resulting endgame White was still a pawn up, but the extra pawn was doubled. Karjakin kept playing, but could make no progress, and the game was drawn after 74 moves. Game 10 was a Ruy Lopez anti-Berlin. In keeping with his game plan, Karjakin tried to remain as solid as possible. A critical moment arose after Carlsen's 20.Nd2, which allowed Black to force a draw or a favourable endgame (see diagram). Karjakin said in the press conference that he thought Carlsen could meet 20...Nxf2+ with 21.Kg1, and missed 21...Nh3+ 22.Kg2 Ngf4+ 23.gxf4 Nxf4+ 24.Rxf4 Qxf4 "and black can never lose" (Carlsen); however Wesley So thought White still had an edge after either 24...Qxf4 or 24...exf4. Reminiscent of games 3 and 4, the game evolved into one in which Carlsen could constantly press, while Karjakin defended. Carlsen steadily improved the position of his pieces, but had no breakthrough until Karjakin played the inaccurate 56...Rhh7?, which allowed Carlsen to play the break 57.b5! at a favourable time. Karjakin tried to actively seek counterplay, but Carlsen fended him off and simplified into a winning endgame, earning Karjakin's resignation. In his last game with the white pieces at standard time controls, Karjakin opened with 1.e4, and the game developed into the seventh Ruy Lopez of the match. Carlsen chose a variation which has given White "free pressure" (Svidler) in the past, but Karjakin failed to make the most of his theoretical edge. Instead it was Carlsen who was playing for the win, with the pawn sacrifice 18...c3 19.bxc3 d5!? This led to a passed pawn for Black that advanced all the way to the 2nd rank, but with his own king exposed, Black could not make progress and fend off a threatened perpetual check at the same time, resulting in a draw.