cro777: Maxime Vachier Lagrave: "12.a3 maybe not the best choice for today as it is very complicated." Position after 11...Bh5
 click for larger viewHere, the main move is 12.Qb3 with the continuation 12...d5 13.e5 Nd7. This line had occurred in the games of both players (they were familiar with this position). As already mentioned, the move 12.a3 was introduced by The World team in the Chessgames Challenge The World vs Naiditsch, 2014 (game of the day Dec-30-14). It was suggested by <RandomVisitor> (as the move preferred by his engine Rybka 4.1). The final vote tally was: <12.a3> 115 votes, <12.Qb3> 102 votes, <12.Ba4> 14 votes etc. <kwid>: "I would like to share an idea of how we could improve on our development: 12. a3. Our problem is the DCB and the Q-rook plus d4 defense requirement. With a2-a3 we have b2-b4 against the treat of Ba5 with pin on d2-e1. but a3 will put the ball in his court to show what he is up to." The move 12.a3 was also tried in March this year at the Moscow Aeroflot open tournament B Bok vs I Kovalenko, 2015 The main answer to 12.a3 is 12...a6 followed by the bishop retreat to f1, while Kovalenko tried 13.Ba4. In the aforementioned Chessgame Challenge, Naiditsch surprised The World by playing 12...Bg6. <RandomVisitor>: "I think that if anyone seriously suggested that 12...Bg6 was worth more than 3 seconds of effort, that they would have been met with sarcasm, or worse." |