Fritz 11 Analysis of Kavinayan Sivakumar Vs Vadim Martirosov

http://www.uschessleague.com/games/sivakumarmartirosov09.htm

Week 4: Sivakumar,Kavinayan - Martirosov,Vadim
USCL 2009 , 23.09.2009

1.e4 c5 2.Nf3 Nc6 3.Bb5 Na5 4.0–0 a6 5.Be2 b5 6.d4 cxd4 7.Nxd4 Bb7 8.Bf3N

[8.Bd3 e6 9.a4 b4 10.Nd2 Qc7 11.Re1 Ne7 12.N2f3 Ng6 13.e5 Bc5 14.Qe2 Qb6 15.Be3 0–0 16.Rad1 Nc6 17.Nxc6 Bxc6 18.Bxc5 Qxc5 19.Be4 f6 20.Bxc6 Qxc6 21.exf6 Rxf6 22.Qe4 d5 Qin Kanying (2501)-Skripchenko,A (2450)/Shenyang 2000/CBM 079/1–0 (56);

8.a4 Bxe4 9.axb5 axb5 10.Nc3 Bb7 11.Ndxb5 Nf6 12.Bf3 d5 13.Nxd5 Nxd5 14.Bxd5 Bxd5 15.Qxd5 Qxd5 16.Nc7+ Kd8 17.Nxd5 e6 18.Nb6 Rb8 19.Rd1+ Ke7 20.Be3 Nb7 21.Ra7 Ke8 22.Nd7 1–0 Teran Alvarez,I (2417)-Vea,O (2147)/Gibraltar 2007/CBM 116 ext; 8.e5 Qc7±]

8...d6 9.Nc3 e6 10.a3

[10.b4!? Nc4 11.a4 bxa4 12.Rxa4 Nf6 13.h4]

10...Nf6² 11.Re1

Black has a cramped position

11...Be7 12.b3

Prevents intrusion on c4

12...0–0 13.Bb2 Rc8 14.Qe2 Nc6 15.Nxc6 Bxc6 16.Rad1 Qc7 17.h3

Secures g4 [17.Qe3 h6=]

17...Rfe8 18.g3 Qb7 19.Bg2 a5 20.b4 axb4 21.axb4 Bf8 22.f4

White plans e5 [22.Nb1!?= is worthy of consideration]

22...d5³ 23.e5

This push gains space

23...Ne4

[23...Nd7!? 24.Rd4 Nb6µ]

24.Nxe4= dxe4 25.c3

Covers b4 [Inferior is 25.Bxe4 Bxb4 26.Bxc6 Qxc6µ]

25...Red8 26.Rxd8 Rxd8 27.Rd1?

[¹27.Bxe4!? and White has air to breath 27...Bxe4 28.Qxe4 Qxe4 29.Rxe4³]

27...Qa7+µ 28.Kf1??

shortens the misery for White [¹28.Kh2 Rxd1 29.Qxd1–+]

28...Rd3

[¹28...Rxd1+ and Black has it in the bag 29.Qxd1 Bd5–+]

29.Rxd3² exd3 30.Qxd3 Bxg2+ 31.Kxg2 Qa2

Black pins: Qa2xb2

32.Qd2 h5 33.Bc1 Qc4 34.Kf2 Be7 35.Qe1 g6 36.Be3 Qd3 37.Bd4

[37.h4!?±]

37...Bxb4= 38.cxb4 Qxd4+ 39.Kf3 Qd3+ 40.Kf2

[40.Kg2 Qc2+ 41.Kf3 Qb3+ 42.Kg2 Qd3=]

40...h4³ 41.gxh4 Qxh3 42.Ke2 Qg2+ 43.Ke3 Qc2 44.Qd2 Qb3+ 45.Ke4 Kg7 46.Qd6 Qc4+ 47.Ke3 Qc1+ 48.Qd2 Qg1+ 49.Qf2

White threatens to win material: Qf2xg1

49...Qh1 50.Kd2??

[50.Qe2 Qh3+ 51.Ke4 Qxh4 52.Qxb5 g5³]

50...Qh3??

ignoring the path to victory [¹50...Qd5+ secures the win 51.Ke2 Qc4+ 52.Kd1 Qxb4–+]

51.Kc2 Qa3

Black threatens to win material: Qa3xb4

52.Qd4?

[52.Qc5!?³ is an interesting alternative]

52...Qg3µ 53.Kd2 Qxh4

[¹53...Kh6–+]

54.Qe3??

leads to further unpleasantness [54.Ke3!?µ]

54...Qh1

[54...g5 and Black can already relax 55.fxg5 Qxb4+ 56.Kc2 Qc4+ 57.Kb1–+]

55.Kc3??

White crumbles in face of a dire situation [¹55.Kc2–+]

55...Qa1+ 56.Kc2 Qa2+ 57.Kc1 Qc4+ 58.Kd1 Qxb4 59.Qg3 Qb1+ 60.Kd2 Qb2+ 61.Kd1 Qd4+ 62.Kc1 b4 63.Qg5

[63.Kc2–+ the only chance to get some counterplay]

63...b3 64.Qf6+ Kg8 65.f5

[65.Qe7 Qc3+ 66.Kd1 Qd3+ 67.Ke1 b2 68.Qe8+ Kg7 69.Qb8 b1Q+ 70.Qxb1 Qxb1+ 71.Kd2 Qa2+ 72.Ke1 Qa8 73.f5 Qe4+ 74.Kd2 Qxf5 75.Ke3 Qf1 76.Kd2 g5 77.Kc3 Qe1+ 78.Kd4 g4 79.Kc5 Qxe5+ 80.Kc6 g3 81.Kd7 g2 82.Kc8 g1Q 83.Kb7 Qg2+ 84.Kb6 Qb8+ 85.Kc5 Qd5#]

65...Qc3+ 66.Kd1 Qc2+

[66...Qd3+ 67.Ke1 b2 68.Qd8+ Qxd8 69.Kf2 b1Q 70.fxe6 Qd2+ 71.Kg3 Qg1+ 72.Kf3 Qgg2#]

67.Ke1–+ Qxf5 68.Qd8+ Kg7 69.Qb8 Qb1+ 70.Kf2

[70.Kd2 cannot change what is in store for ? 70...Qc2+ 71.Ke3 b2 72.Qd8 Qc1+ 73.Ke2 Qc4+ 74.Ke3 b1Q 75.Qf6+ Kg8 76.Qd8+ Kh7 77.Qd1 Qxd1 78.Kf2 Qdg4 79.Ke3 Qcd4#]

70...Qc2+ 71.Kg3

[71.Kg1 b2 72.Kf1 b1Q+ 73.Qxb1 Qxb1+ 74.Ke2 Qe4+ 75.Kd2 g5 76.Kc3 Qxe5+ 77.Kd3 g4 78.Kd2 g3 79.Kd3 g2 80.Kd2 g1Q 81.Kc2 Qe4+ 82.Kb2 Qd3 83.Ka2 Qgb1#]

71...b2 72.Qd8

[72.Qxb2 Qxb2 73.Kf3 g5 74.Ke3 Qxe5+ 75.Kd3 g4 76.Kd2 g3 77.Kd3 g2 78.Kd2 g1Q 79.Kc2 Qe2+ 80.Kb3 Qd4 81.Ka3 Qeb2#]

72...Qf5

[72...Qf5 73.Kg2 Qg4+ 74.Kh2 Qh5+ 75.Kg3 Qxe5+ 76.Kh3 b1Q 77.Qh8+ Kxh8 78.Kg2 Qbe1 79.Kf3 Q1g3#]

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