(1) Short,Nigel D (2706) - Efimenko,Zahar (2654) [B90]
Match Mukachevo (5), 25.09.2009
[Mueller,Karsten]



1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.a4 Nc6 7.Be2 e5 8.Nxc6 bxc6 9.f4 Be7 10.a5 0-0 11.0-0 exf4 12.Bxf4 Be6 13.Kh1 Qc7 14.Qd2 Rfd8 15.h3 Qb7 16.Qe3 d5 17.Be5 Nxe4 18.Nxe4 dxe4 19.Qxe4 Bd5 20.Qg4 g6 21.Qf4 c5 22.Bf3 f5 23.Bc3 Bd6 24.Qh4 Bxf3 25.Rxf3 Qf7 26.Re1 Re8 27.Rfe3 Rxe3 28.Rxe3 Bf8 29.b3 Rc8 30.Qe1 c4 31.b4 f4 32.Re6 f3 33.Qe5 Bg7 34.Qxg7+ Qxg7 35.Bxg7 f2 36.Rf6 Kxg7 37.Rxf2 c3
Rook endings are extremely drawish. So, despite being a sound pawn ahead, Nigel Short still has to demonstrate great precision:

38.Rf4!
An important prophylactic move which ensures that an activation of the black rook will be at a price.

38...Rd8 39.Rc4 Rd1+ 40.Kh2 Rb1 41.Kg3 Rb2 42.Rxc3 Rxb4 43.Rc6 g5 44.Kf3 Rb5 45.Rxa6 Rc5 46.c4!?
With this move, Short arranges things so that his rook can get out of the unfavourable position in front of the a-pawn.

46...Rxc4 47.Rb6! h5 48.a6 Ra4
[Nor does the exchange of pawns with 48...g4+!? suffice for a draw. Because of the strongly reduced winning potential, however, White has to play with great accuracy, e.g. 49.hxg4 Rxg4 (49...hxg4+ 50.Kg3 Ra4 51.Kh4 Kf7 52.g3 Ke7 53.Kg5 Kd7 54.Kf5+- ) 50.a7 Ra4 51.Rb7+ Kf6 52.g3 Ke5 53.Re7+ Kf6 54.Rh7 Kf5 55.Ke3 Kg4 56.Rg7+ Kh3 (56...Kf5 57.Kd3 Ke5 58.Kc3 Kd5 59.Kb3 Ra1 60.Kb4 Kc6 61.Rh7+- ) 57.Kd3 Kh2 58.Kc3 Kh3 59.Kb3 Ra1 60.Kb4 Ra2 61.Kb5 Ra3 (61...Rxa7 62.Rxa7 Kxg3 63.Rg7+ Kf3 64.Rh7 Kg4 65.Kc4+- ) 62.Kb6 Rb3+ 63.Kc7 Rc3+ 64.Kb8 Rb3+ 65.Ka8 Rb5 66.Rg8 Kg2 67.g4 h4 68.Rb8+- ]

49.Ke3 Ra2 50.Rb7+!
The advance of the a-pawn to the seventh rank which follows forces the black rook to remain on the a-file, where sooner or later it can be put under pressure by the white king.

50...Kf6 51.a7 Kf5
[51...Ke5 essentially makes no difference, e.g. 52.Re7+ Kf6 53.Rh7 Ra4 54.Kd3 g4 55.h4+- ]

52.g3 Ra4?!
[After 52...Ke5!? White must first position his rook better with 53.Re7+ Kd5 54.Rd7+ before he can approach with the king: 54...Ke6 (54...Ke5 55.Kd3 h4 56.gxh4 gxh4 57.Kc4+- ) 55.Rh7 Ra4 56.Kd3 h4 57.g4+- ]

53.Kd3 Ra1?!
Now White can win with the a-pawn. [53...Ke5 was more stubborn, but in the long run there will be a winning endgame with linked passed pawns: 54.Kc3 h4 55.g4 Kd5 56.Kb3 Ra1 57.Rg7 Ke6 58.Rxg5 Rxa7 59.Rh5+- ]

54.Kd4!
Good technique! Short's king will any case require three moves to get to b6 and so he exploits the possibility of getting in another bodycheck.

54...h4 55.gxh4 gxh4 56.Kc5 Kf4 57.Rg7 Kf3 58.Kb6
and Efimenko resigned in view of

58...Rb1+ 59.Kc7 Ra1 60.Kb8 Rb1+ 61.Rb7+- 1-0