"It just isn't conceivable that you can design a program strong enough to beat players like me."

March 13, 2014

Bxh2+: A terrifying computer move i can't forget

The 10th move from Junior was the moment i said: "Oh no! What's going on there?"

11 years ago. The times computer programs started to be very annoying :-)

Kasparov,G (2847) - Deep Junior [E48]

X3D FIDE Man-Machine World Championship New York City, 05.02.2003

1.d4 Nf6 No more Semi-Slav, which was played in games one and three. Junior was in serious trouble in both games. Here the Junior team goes for the solid Nimzo-Indian Defense.

2.c4 e6 3.Nc3 Bb4 4.e3 0-0 5.Bd3 d5 6.cxd5 exd5 7.Nge2 Re8 8.0-0 Bd6 9.a3 c6 [ 9...Nbd7 10.b4 c6 11.Ra2 a5 12.bxa5 Rxa5 13.f3 c5 0-1 Pliester,L-Lobron,E/Amsterdam 1995/EXT 97 (35). (35); 9...c6 ]

10.Qc2 Bxh2+! !!!!!!!!! Unbelievable! Junior sacrifices a piece for an attack on Kasparov's king! A total shocker. Kasparov was visibly stunned on the big X3D screen. He calmed down after he was sure he wasn't being mated. The attack is not a forced line, it is very speculative.

11.Kxh2 Ng4+ 12.Kg3 [ 12.Kg1?? Qh4-+ 13.Rd1 Qxf2+ 14.Kh1 Re6 ]

12...Qg5 13.f4 Qh5 14.Bd2 Commentators Seirawan and Ashley didn't like this move. But it connects the rooks and white isn't afraid of 14...Rxe3 15.Bxe3 Nxe3 16.Qd2. [ 14.e4!? ]

14...Qh2+ 15.Kf3 Qh4 16.Bxh7+ After over 30 minutes of thought Kasparov heads to one of the drawing variations.
[ Kasparov could have attempted to play for a win with the incredibly risky 16.g3 Analysis shows it is probably playable, but Kasparov thought it just too dangerous against a program like Deep Junior. 16...Nh2+

( 16...Qh5 Yet another wild line that looks good for White. 17.Rh1 Nxe3+ 18.Rxh5 Bg4+ 19.Kf2 Nxc2 20.Rah1 Bxh5 21.Rxh5 Na1 22.Bxh7+ Kf8+- ;

16...Qh2 According to his postgame comments, this was the move Kasparov was most worried about during his long think before taking the draw. 17.f5 Nd7 ( 17...h5 18.e4 ; 17...Qh3 ) 18.Kxg4 Qg2 19.e4 Nf6+ 20.Kf4 dxe4 21.Bxe4 Nxe4 22.Nxe4 Qxe2 23.Rae1 Rxe4+ 24.Qxe4 Qxd2+ 25.Kf3+- )

17.Kf2 Ng4+ 18.Ke1 White just walks away. (RUNS away!) These lines are still dangerous for White, although no concrete win has been found for either side. Black keeps good attacking chances for the piece and it is definitely harder for a human on the white side!

( 18.Kg2 Qh2+ 19.Kf3 g6 ( 19...f5 20.Bxf5 Qh5 ) 20.e4 ( 20.f5 Nd7! Threatening mate in three with ..Nde5+! 21.e4 c5! The saving shot for Black, removing the key d4 pawn. 22.Kxg4 ( 22.Bg5 gxf5 23.Nxd5 cxd4 24.exf5 ) 22...cxd4 23.Bg5 forced ( 23.Rh1 Ne5+ 24.Kf4 h6!! Forcing mate! 25.Nxd4 ( 25.Rxh2 g5# ) 25...Qf2+ 26.Nf3 Qxf3# ) 23...dxe4 24.Nxe4 Qh5+ 25.Kf4 gxf5 26.Nxd4 Qg4+ 27.Ke3 Qxg5+ 28.Kf2 fxe4 29.Bxe4 Nf6=/+ ) 20...dxe4+ 21.Bxe4 Nf6 22.f5 Qh5+ 23.Kf2 Nxe4+ 24.Nxe4 Qxf5+ 25.Ke3 Qg5+ 26.Kd3 ( 26.Kf2 Qf5+ 27.Ke3 Qg5+ 28.Kf2= ) 26...Bf5 27.N2c3 Qxg3+ 28.Be3 Black has three pawns for the piece and maintains a dangerous attack.)

18...Qh3 ( 18...Qh5 ) 19.Rg1 Nd7 20.e4 dxe4 ( 20...Nh2 ) 21.Nxe4 Ndf6 ( 21...Qh2 22.Kd1 Ndf6 23.Nxf6+ Nxf6 24.Re1 Bg4 ) 22.Nd6 ( 22.Nxf6+ Nxf6 23.Bc3 Bg4 24.Kd2 Bxe2 25.Bxe2 Ne4+ ) 22...Re6 23.Nc4 ; 16.Ng3 Nh2+ 17.Kf2 Ng4+ 18.Kf3 Nh2+= ]

16...Kh8 17.Ng3 Nh2+ 18.Kf2 Ng4+ 19.Kf3 Nh2+ 1/2-1/2

Replay this extraordinary match at:

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