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Fabiano Caruana vs Vasyl Ivanchuk
Biel International Chess Festival (2009), Biel SUI, rd 8, Jul-28
Pirc Defense: General (B07)  ·  0-1

8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)better is 9.d5 Nbd7 10.Nf3 c4 11.Bxc4 Qc5 12.Bd3 Qxf2+ 13.Kxf2 ⩲ +0.70 (22 ply)9...cxd4 was played in Van der Wiel vs Van Wely, 1993 (0-1)= +0.41 (19 ply) 11.Ng3 c4 12.Be2 Qb6 13.Qc1 h5 14.h3 g5 15.Rb1 h4 16.Nf1 = +0.45 (22 ply)= -0.40 (23 ply) 12.Qd2 Nxe4 13.Nxe4 Qxb5 14.N2c3 Qa6 15.b3 Bf5 16.f4 Nd7 = -0.08 (21 ply) ∓ -1.52 (22 ply) 13.Qd2 a6 14.f4 axb5 15.fxe5 dxe5 16.d6 b4 17.Rd1 Ra6 ⩱ -0.73 (22 ply) 13...g5 14.Qxg5 a6 15.Ba4 b5 16.Qe3 bxa4 17.f4 Ng6 18.O-O ∓ -1.69 (22 ply) ⩱ -0.76 (22 ply)better is 17.Nd1 Bd7 18.Rf2 Kc7 19.c3 bxc3 20.bxc3 Qc5 21.Kg2 Rhg8 = -0.45 (22 ply)better is 17...Qb6+ 18.Kg2 Bd7 19.Rfe1 Kc7 20.Nf1 Qc5 21.Red1 Nh5 ⩱ -1.02 (21 ply) 18.Rf2 b5 19.c3 bxc3 20.bxc3 Bd7 21.Qg7 Re8 22.Qxf7 b4 = -0.42 (21 ply) ⩱ -1.29 (21 ply) 19...Rg8 20.Nd4 bxc3 21.bxc3 Ra3 22.Rac1 Rxa2+ 23.Nge2 ⩱ -1.22 (23 ply)= +0.27 (23 ply)better is 20...Rg8 21.Rae1 Qd4 22.Re2 Nh5 23.Nxh5 gxh5+ 24.Kh2 Qg7 = 0.00 (22 ply) ⩲ +0.57 (22 ply)better is 22.Rae1 Rag8 23.Re2 Nh5 24.Nxh5 gxh5+ 25.Kh2 Qd4 26.f5 ⩲ +0.54 (23 ply)= 0.00 (24 ply) after 22...Rag8 23.Kh2 Qe3 24.Rde1 Qd4 25.Rd1 Qe3better is 24...Rae8 25.Nce4 Qb6 26.Nxh5 gxh5+ 27.Kh1 f5 28.exf6 = 0.00 (22 ply) 25.Qxh5 gxf4 26.Ne4 Rxg3+ 27.Kh1 Rxh3+ 28.Qxh3 Bxh3 ⩲ +0.59 (26 ply)= -0.37 (25 ply) 26.fxg5 Nf4+ 27.Kh1 Rg6 28.Qh4 Nxh3 29.Nce4 Qb6 30.Rd2 = 0.00 (24 ply) ⩱ -0.81 (25 ply) 27.Qxh7 gxf4+ 28.Qxg6 fxg6 29.Nxf4 b4 30.axb4 Qxb4 = -0.40 (26 ply)-+ -2.91 (27 ply) 30...Rxh3 31.d6+ Kc6 32.Rh1 Rxh1 33.Rxh1 Kxd6 34.Rd1+ -+ -2.92 (23 ply) ⩱ -1.24 (24 ply) 33.Ne2 b4 34.Ng3 f5 35.axb4 cxb4 36.Ne2 Rxh3 37.Rh1 Rxh1 ⩱ -1.37 (24 ply) ∓ -2.15 (23 ply) after 33...Rd4 34.Ne3 f5 35.Ng2 Re8 36.Rxe8 Bxe8 37.Re1 Bd7 36.Rc1 Rh5 37.a4 Rxd5 38.Ne3 Rd2+ 39.Kg3 Rxb2 40.axb5 ∓ -2.07 (25 ply)-+ -2.89 (25 ply) after 36...Rh5 37.a4 Rxd5 38.Ne3 Rd2+ 39.Kg3 Rxb2 40.Rd1+ Kc7 37.a4 bxa4 38.Rc1 h4 39.Ra1 Be8 40.Re1 Bb5 41.Ra1 f6 ∓ -2.20 (27 ply)-+ -3.72 (25 ply)42.Rh4 c2 43.Nxc2 Rxc2 44.Rf4 Rc4 45.Rf6+ Ke7 46.Rh6 h4+ -+ -6.67 (23 ply)0-1

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

Annotations by Stockfish (Computer).      [35437 more games annotated by Stockfish]

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Kibitzer's Corner
Jul-28-09  totololo: 24...g5 was well timed. It could be played early in the game but such a move needs all forces to be developed for maximum effect. Caruana tried the Sucker attack.... Chucky is still one of the best players around so he should be credited to enjoy such strategic blunders....

After 24....g5 everything in white position explodes and Chucky quietly had shown : won ending Mate!

Quite a lesson on how a super-GM treats positional blunders

Jul-28-09
Premium Chessgames Member
  JointheArmy: 24. g5!! Absolutely brilliant.
Jul-28-09  luzhin: On the contrary, g5 could have been played with maximum effect as early as move 13. After 13...g5! if 14.Qxg5 a6 15.f4 Ng6 the point is revealed: the White KB is trapped, but Black has managed to save his Knight by making available the square g6. In the game Caruana should have closed the g-file with 26.fxg5, because after 26...Nf4+ 27.Kh1 Qf2 he has the stunner 28.Qxd6+!
Jul-28-09  messachess: Nice win by Ivanchuk
Jul-28-09  totololo: <luzhin> I think that if you continue a bit : 13...g5! if 14.Qxg5 a6 15.f4 Ng6 16. e5 dxe5 17.fxe5 Ng8 the threats against the black king are rather unpleasant...as the center can be opened to the rooks.

I think that Chuky didn't like it....

Jul-28-09  totololo: <26.fxg5, because after 26...Nf4+ 27.Kh1 Qf2 he has the stunner 28.Qxd6+!> In addition to the previous line :
A. 27.Kf1 Bxh3+ 28. Qxh3 Nxh3
B. 27. Kh2 Qf2+ 28. Kh1 Qg2#
C. 27. Kh1 Qf2 28. Qd6+ exd6 29. exd6+ Kd8!30.Re2 Qxg3 and the g-file will be opened and the funeral march band is there.....
Jul-29-09
Premium Chessgames Member
  Fusilli: <totololo> <C. 27. Kh1 Qf2 28. Qd6+ exd6 29. exd6+ Kd8!30.Re2 Qxg3 and the g-file will be opened and the funeral march band is there.....> No, <luzhin>'s suggestion was 26.fxg5, *after* the pawns have been exchanged in d6. It is true, as he says, that after 26...Nf4+ 27.Kh1 Qf2 meets 28.Qxd6+!, but Black has the intermediate 27...Rg6, then 28.Qh4 Nxh3 29.Nge4 Qb6 and it's complicated, but the White king seems more exposed than the Black king.
Jul-29-09  luzhin: Totololo, I think if you continue a bit differently: 13...g5! 14.Qxg5 a6 15.f4 Ng6 16.e5 h6! you will find that the threat against the White queen is more than unpleasant: it is trapped. I suspect that Ivanchuk didn't even consider 13...g5 -- perhaps failing to observe Bronstein's dictum that if you see a good move, wait before playing it: you might find a better one!
Jul-29-09  notyetagm: 24 ... g6-g5!!


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MONOKROUSSOS

http://chessmind.powerblogs.com/fil...

<<<<24...g5!! This move made me jump in my chair.>>> It's a beautiful move, opening some lines and closing others.>

Mar-17-18  Saniyat24: Oh, man...!
Mar-17-18  Saniyat24: I Van Chuk your Queen...!

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