BATUMI CHESS OLYMPIAD 2018 ROUND 11 – TANIA vs NOMIN-ERDENE

This game is from round 11 of the 2018 Batumi Chess Olympiad. It features Sachdev Tania with White against Davaademberel Nomin-Erdene with Black.

Today’s game features a Slav Defence.

Tania,Sachdev (2400) - Nomin-Erdene,Davaademberel (2377)

43rd Olympiad Batumi 2018 Women Batumi (11.2), 05.10.2018

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 Nbd7 7.Nxc4 Qc7 8.g3 e5 9.dxe5 Nxe5 10.Bf4 Nfd7 11.Bg2 f6 12.0–0 D17: Slav Defence: 5 a4 Bf5: Lines with 6 Nh4 and 6 Ne5

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12...0–0–0 [12...g5 13.Bxe5 Nxe5 14.Nxe5 Qxe5 15.a5 a6 16.Qa4 Bc5 17.Qb3 Qe7 18.Na4 Bd6 19.Rac1 Kf8 20.e4 Be6 21.Qe3 Kg7 22.Nc5 Rad8 23.f4 gxf4 24.gxf4 Bc8 25.b4 ½–½ Riazantsev,A (2594)-Skatchkov,P (2454)/Cappelle la Grande 2006/CBM 110 ext] 
13.Ne3N White threatens to win material: Ne3xf5 [13.Qc1 g5 14.Nxe5 Nxe5 15.Be3 Nc4 16.b3 Nxe3 17.Qxe3 Kb8 18.Ne4 Re8 19.Qd4 Bxe4 20.Bxe4 Bg7 21.Bf5 Rxe2 22.Qd3 Re5 23.Rad1 h5 24.b4 Rd5 25.Qf3 g4 26.Qe4 Re5 27.Qd3 a6 Volodin,V (2225)-Bang,A (2340)/Copenhagen 1991/TD/½–½ (34)] 
13...Be6 14.Qc2 Nc5 15.Rfd1 Rxd1+ 16.Rxd1 a5 17.h4 Kb8 Black king safety improved 
18.Rc1 

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18...Bb3 Black threatens to win material: Bb3xc2 
19.Qf5 Be7 20.h5 Bf7 21.h6 g6 22.Bxe5 

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22...Qxe5 [Inferior is 22...gxf5 23.Bxc7+ Kxc7 24.Nxf5=] 
23.Qxe5+ fxe5 Black has the pair of bishops 
24.Ng4 White threatens to win material: Ng4xe5 
24...Nd7 25.Bf3 Be6 26.Ne4 The knight is not easily driven from e4 
26...Rd8 27.e3 Kc7 Black king safety dropped 
28.Kg2 Rf8 29.Nc3 Kc8 Black king safety improved 
30.Rd1 Bb4 An ideal square for the black bishop. 
31.Rc1 Kd8 32.Ne4 

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32...Bb3 Black threatens to win material: Bb3xa4 
33.Ng5 White threatens to win material: Ng5xh7 
33...Be7 Black threatens to win material: Be7xg5 
34.Ne4 Bxa4 35.Ra1 White threatens to win material: Ra1xa4 
35...Bc2 36.Nd2? [36.Rxa5 Kc7 37.Ra1 Bb3³] 
36...Bb4 Black threatens to win material: Bb4xd2 
37.Nc4 Attacking the isolated pawn on e5 
37...e4 38.Bd1 Bxd1 39.Rxd1 Ke7 40.Rd4 Nc5 41.Kf1 Ke6 42.Kg2 Kf5 43.Nge5 Kg5 44.Nd7 Nxd7 45.Rxd7 Kxh6 46.Ne5 b6 47.Nxc6? [¹47.Rc7³ is the best option White has] 
47...Be1–+ 48.Ne5 Rxf2+ 49.Kh3 

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49...Kg5 [49...Rxb2?? the pawn is indigestible 50.Ng4+ Kh5 51.Rd5+ g5 52.Rd6 Rh2+ 53.Nxh2 g4+ 54.Nxg4+-] 
50.Rd5 Rf5?? a transit from better to worse [¹50...Kf6 with excellent chances for Black 51.Nc4 Rf3–+] 
51.g4³ Rf1 52.Nd7+ Kh6 53.g5+ Kg7 

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54.Nf6? [54.Nxb6!? Rg1 55.Kh2³] 
54...Kf7 [54...h5!? 55.Rd6 Rf3+ 56.Kg2 Rf2+ 57.Kh3–+] 
55.Nxe4 Ke6 56.Rb5 Rf3+ 57.Kg4 Rxe3 

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58.Kf4 White threatens to win material: Kf4xe3 
58...Re2?? ruins a very nice position [¹58...Rd3³ would save the game] 
59.Re5++- Kf7 60.Nd6+ [60.Nd6+ Kg7 61.Rxe2+-]  1–0