Wednesday, February 22, 2012

Annotated: Recent Game from 42nd World Team, Pedersen vs. Shusterman

Roger had a brilliant win Monday, versus a strong player. While the game score is provided below, click here for the navigable chess viewer.

This shows a full board, and you can click and replay all the moves.

Congratulations Roger, who 'went 4 wins, 1 draw and 1 loss to a 2180 player, as board 3'.

(1) Roger E Pedersen,1903 - Ariel Shusterman,1818 [B52]
2012 US Amateur Team Championship East, (6), 20.02.2012
509MB, Fritz13.ctg, NEWJERSEY B52: Sicilian: Moscow Variation with 3...Bd7

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Nxd7 5.0-0 g6 6.c3 Bg7 7.d3 Ngf6 last book move

8.Bf4 0-0 9.Qd2 [9.Nbd2 Nh5 10.Be3 Qc7= ]

9...Re8 10.Na3 a6 Covers b5

11.Rad1 b5 12.Nc2 Rc8 13.a3 c4 Black gets more space

14.e5 dxe5 15.Nxe5 Nxe5 16.Bxe5 Qd5 17.Bxf6 Bxf6 18.dxc4 Qxc4 19.Ne3 White threatens to win material: Ne3xc4

19...Qh4 20.Nd5 Be5 Black has a mate threat [20...e6 21.g3 Qg5 22.Nxf6+ Qxf6 23.Qd6= ]

21.g3+/= White threatens to win material: g3xh4

21...Qh3 White king safety dropped

22.Qe2 White threatens to win material: Qe2xe5

22...Bd6 23.Rfe1 Kf8 [23...Kg7 24.Qe4+/= ]

24.Qf3 Rc5 [24...Kg7 25.Nb4 Ra8 26.Rd2+/= ]

25.Re4 [25.b4 Rcc8 26.Nb6 Rb8+/- ]

25...h5 [25...Qf5 26.Qxf5 gxf5 27.Red4+/= ]

26.Qe3 White has a mate threat [>=26.Nxe7 Bxe7 27.Rxe7 Kxe7 28.Qe3+ Kf8 29.Qxc5+ Kg8 30.Qc6+/- ]

26...Kg7?? [26...Qf5 27.Red4+/= ]

27.Qd4+ [>=27.Nf4 ends the debate 27...Bxf4 28.Qxc5+- (28.Qxf4?! Qc8= ; 28.Rxf4?! Qc8= ) ]

27...e5= Black threatens to win material: e5xd4

28.Qd2 Rd8 [28...Qf5 29.Re2 Rd8 30.Qc2 Qxc2 31.Rxc2= ]

29.Qe2 [29.Qg5 Rcc8 30.Rh4 Qf5 31.Qxf5 gxf5 32.Rxh5 Kg6+/- ]

29...Qd7 [29...Qe6 30.Nf4 Qf5 31.Ng2=/+ ]

30.Nb4 White threatens to win material: Nb4xa6 [>=30.Rxe5!? Qc6 31.b4+/- ]

30...a5 Black threatens to win material: a5xb4

31.Nc2 f5 [31...Qc8 32.Re3= ]

32.Re3 [32.b4 axb4 (32...fxe4?? Black cannot capture the rook 33.bxc5 Qc6 34.cxd6+- ; 32...Rxc3 is not possible 33.Rxe5 axb4 34.Nxb4+- ) 33.axb4 Rxc3 34.Rxe5 Qc8 35.Rxd6 Rxd6+/- ]

32...f4? [32...e4!?= might be a viable alternative]

33.gxf4 [33.b4!? axb4 34.axb4+- ]

33...exf4+/- 34.Re6 White threatens to win material: Re6xd6

34...Rg5+ 35.Kf1 [>=35.Kh1 Qb7+ 36.f3+/- ]

35...f3?? stumbles just before the finish line [>=35...Qb7 was possible 36.f3 Bc5= ]

36.Qe3 [>=36.Qe4 might be the shorter path 36...Rg4 37.Rexd6 Rxe4 38.Rxd7+ Rxd7 39.Rxd7+ Kf6 40.Nd4+- ]

36...Re8 [36...Qc6 desperation 37.Qd4+ Kh6 38.Rxd6 Qxd6 39.Qxd6 Rxd6 40.Rxd6 Rg2+- ]

37.Rdxd6 Qc8 38.Qd4+ Kh6 39.Rd7 Rg8 40.Ree7 Rg2 [40...Qxd7 does not solve anything 41.Qxd7 Rg1+ 42.Kxg1 Kg5 43.Rf7 h4 44.Qe7+ Kh5 45.Rh7+ Kg4 46.Ne3+ Kf4 47.Rxh4# ]

41.Qe3+ g5 42.Qe6+ Rg6 43.Rh7# 1-0

1 comment:

Anonymous said...

Nice game! That's finishing the tournament in style.