After starting with two losses in his first three games, Magnus Carlsen rallied back to win his second consecutive London Chess Classic. Using the 3-1-0 scoring system, Carlsen led the table with 13 points, two points ahead of both Viswanathan Anand and the surprising Luke McShane, who had a great result in a tournament where he was rated 7th out of the eight participants.
Carlsen would have tied with Anand and McShane in a standard scoring system (all three would have finished on 4.5/7 points), but the emphasis put on wins at this event gave him a clear victory. A mild controversy was averted by Carlsen winning in the first round; since "wins" is often the first tiebreak used in other top-flight tournaments anyway, Carlsen would have likely won even if the "football" scoring system wasn't in effect. Had Carlsen drawn his last game against Nigel Short, he would have had 11 points, and taken the title on tiebreaks despite being a half-point behind on traditional scoring.
Personally, I don't think there's much of a dilemma there; the players knew what the scoring system was going into the tournament, making the traditional scoring method irrelevant in terms of what happened here. Of course, it's perfectly reasonable to be against the scoring system in general (while I don't care strongly one way or another, I understand the argument that it can lead to sloppy play by enticing players to overextend in an attempt to win unwinnable games), but once the tournament is underway, it's hard to dispute that the only scoring system that matters is the one being used. Other sports have occasional changes to their scoring in specified tournaments; for instance, see the Stableford System which is occasionally used for golf tournaments. Perhaps a more relevant example is the popular Asian board game of Go, which features slight scoring and handicap changes between tournaments (and especially between countries) that can slightly alter play at the professional level. When the concept of komi, a handicap given to the second player as compensation for the disadvantage of playing second, was introduced to professional play, it was controversial to say the least -- but more than 70 years later, Go is still Go.
American fans might be slightly disappointed at Hikaru Nakamura's 4th place finish, but the result was better than it sounds. His +1 score was another excellent showing against world-class competition, and included a win with Black against Vladimir Kramnik, which is always a big victory. Naka is having a great year, and appears poised to both cross the 2750 barrier and break into the top 10 in the world rankings.
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