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In the Van Wely-Movsesian game, Van Wely played the English Opening, and GM Movsesian decided to play a setup which resembles the Dutch Defense for Black (with Black pawns on g6,f5,e5, and d6). The two players followed the moves played in the game Paunovic (2511)-Fernando Gros (2081) from the 2004 Ortigueira op 3rd, until move 17, when Van Wely played a theoretical novelty with 17.Rc1. On move 22, the chess program Deep Rybka 3 preferred to play more aggressively for White by suggesting the move 22.Ra7 (22.Ra7 Ng6 23.Qc6 h4 24. Qxd7 Rxd7 25.Be6 Re7,) which would have given White a bind on the queenside).
On move 23 Movsesian offered a pawn sacrifice 22...h4!? which Van Wely declined to accept (If he had play might have continued: (23. gxh4 d5 (23... Ng6 24. h5 Nh4 25. Bc6 Qe7 26. Ne2 Rf8+= ) 24. c5 bxc5 25. Na4 Qd6 26. Ba3 d4 27. Bxc5 Qd7 28. Ra7 Nc8 29. Ra6 dxe3 30. Bxe3 +/=). By not capturing the h-pawn, Van Wely was forced to enter into a position in which GM Movsesian gained a great deal of space on the kingside (like in the King's Indian Defense, where black attacks on the kingside). A key moment in the game was when GM Movsesian was able to play 24...f4. Again this lead to him offering a pawn sacrifice , which GM Van Wely accepted.
On move 27, Van Wely played 27.gxf4 winning a pawn. However, the chess program Deep Hiarcs evaluated that the move 27.d5 was a better idea (with a possible continuation being: 27.d5 Bf5 28.Qa6 fxg3 29.Nxg3 Re7 30.Qe1 Qa1 30.Ne5= with an equal game) A key moment in this game occurred on move 31, when GM Van Wely had to recapture a pawn on his c4-square. Van Wely chose to play 31.Bxc4 (which was also an offer to exchange bishops on the c4-square). Instead of 31.Bxc4 (which Deep Rybka 3 gave a poor evaluation to), the program suggested that recapturing with his knight was a better idea: 31.Nxc4 could have lead to this continuation: 31...Bd5 32.Qxd7 Rxd7 33.Rc8 Ne4 24.Ne3 Nd2=)
When evaluating the position after move GM Movsesian's 32....Nd5, Deep Rybka 3 considers it to be in GM Movsesian's favor (=+). A key moment in the game occurred on move 36, when Van Wely erred with 36.Ra7? (Instead Deep Rybka 3 evaluated that a better idea was 36.Ng3 with this continuation possible: 36. Ng3 Nb4 37.Ra3 Nc2 38.Rd3 Rd7 =+). However, GM Movsesian missed playing the move 36...Nh4! after which 37.Nce3 Nxe3 38.Nxe3 Bxd4! 39.Bxd4 g3!? 40.Ke2 Rxh2 41.Ra1 Nf3 42.Rh1 Nxd4 is winning for black. Probably both players where in time pressure at the end of the game, and this may have been one factor to explain why Van Wely made an error, which cost him the game on 39. The move 39.Ne5? blundered a pawn. (Instead he should have played 39.Ba3 Rf7 40.Bd6 Kh6 41.Bxf4 Rxf4 is =/+). On move 42 Van Wely played 42.Rd4?? blundering another pawn. Van Wely resigned on move 44 because after 45. Rd1 Bxb2 46. Rh1 Be5 47. Kd3 g3 48. Nxg3 Bxg3 has a decisive advantage.
Here are the Group A standings after 11 rounds:
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