Carlsen's Lost Game Against Ivanchuk, Round 12, Candidates

30 March 2013, Kuala Lumpur – The official website reported that after seven hours of play, the chess world was shocked as Magnus Carlsen lost his first game of the tournament, and with it his lead in the tournament. But if anyone could beat him it was the erratic Vassily Ivanchuk, who had the upper hand in their first mutual game as well. In a Taimanov Sicilian, the Ukrainian quickly got a pleasant ending. “When 10.Nb3 appeared on the board I understood that this structure resembles the French Defence and it’s interesting to play. Objectively it’s not better for him but there were many tricks and traps,” said Ivanchuk.

Quite upset about his loss, Carlsen did attend the press conference and was very critical of his play. “First of all I think I played absolutely disgracefully from move 1.” He admitted that it was Black who had an edge in the ending, but after the weakening move 18…a5 he started to play for a win again. But then his 24.Nb5 was "extremely stupid”. “I can do anything. Probably I'm actually not better but I should never lose it.” About the position after move 30, the Norwegian said: “I think there's still not too many problems for me but I just kept on missing more and more stuff.”

Ivanchuk kept pressing, but even the rook ending should have ended in a draw, e.g. with 71.c6. However, there Carlsen made the decisive mistake: “Here I was actually pretty sure that I would draw, which is why I played so carelessly. I hadn’t seen 71…Ke4 at all.” Although he wasn’t sure about his technique, Ivanchuk didn’t make a single mistake, converted the full point and made Kramnik the new sole leader.

After twelve rounds the standings are as follows: Kramnik leads with 8 points, followed by Carlsen with 7.5. Aronian is third with 6.5 points and Svidler fourth with 6. Grischuk and Gelfand are tied for fifth place with 5.5 points, Ivanchuk has 5 and Radjabov 4 points. Saturday, March 30th is a rest day. After the clock is set one hour forward, the 13th round will be played on Sunday, March 31st at 14:00 British Summer Time (BST) with the games Radjabov-Carlsen, Grischuk-Aronian, Kramnik-Gelfand and Svidler-Ivanchuk.

The FIDE Candidates' Tournament is taking place March 14th-April 1st, 2013 at IET London, Savoy Place. It is sponsored by the State Oil Company of Azerbaijan Republic (SOCAR) and organized by AGON and the World Chess Federation (FIDE). Games and information can be found at http://london2013.fide.com.