csmath: 12. Qa5
[unambitious move on the face value with white content to play on minimal advantage.]
After 16 moves both players were going into "endgame" with little ambition. However the major difference was that white had more active pieces and Wojtaszek was few moves behind in development. From this point on Saric played energetic:
20. c4!
[Very strong move, white plans Nc6 and Kc2 but before that he needs to secure the pawn on d5.]
22. ...e4!?
[black is losing patience but his position is difficult either way. However this move speeds up resolution. The basic problem is that e4 is only going to open e-file while it is unclear how can black use that any time soon.]
23. ...Nh7?
[Losing move. 23. ...Bd8, 24. Nc6 Re8, 25. Kd2 with Bg5 to follow looks lousy as well.]
24. Nc6?
[While Saric follows his plan he did have stronger move:
24. c5! dxc5
25. Nc4
with numerous threats and with black pieces completely uncoordinated.]
25. ...Rhe8?
[Yet another big error. 25. ...Ra8 looks more prudent although black position is not attractive.]
26. Rd3?!
[26. Kd2! and b2 pawn is poisoned as after 26. ...Bxb2?, 27. Rb1 Bf6, 28. Rb7 Rc7, 29. Rxc7 Kxc7, 30. Ra7 Kc8, 31. Bb6 and black is totally lost.]
26. ...Ng5?
[Again 26. ...Ra8 was necessary.]
27. Bb6?
[27. Rda3 again leads to a hopeless position with white rook coming to a7.]
27. ...Re2?
[Wojtaszek misses the last chance for 27. ...Ra8.]
29. c5!
[Nice end. The pawn cannot be take because the d-pawn is unstoppable with mate threats. On the other hand 29. ...Be5, 30. Nxe5 Rxe5, 31. f4 Re1, 32. Kd2 is also hopeless.]
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Not a great game. Black has been outplayed in the opening but white kept on missing clear wins as well.