Kramnik blunder position

[Will Singleton]

[d]8/1b1nkp1p/4pq2/1B6/PP1p1pQ1/2r2N2/5PPP/4R1K1 w - - am Nxd4;

amd 2.2ghz, single cpu

Code: Select all

shredder 7.04   0:09
smarthink 1.0	0:10
glaurung 1.2.1  4:35
fruit 2.2.1     5:20
rybka 1.0       6:45

[AdminX]

Yes, Anand saw much deeper into the position ... (Black's 34. ... Ne3!)

[Jouni]

Weird position really. I followed game by R3 (what else) and noticed in seconds d4 is tabu, but look famous tactician Fritz No wonder Kramnik fails.

Analysis by Fritz 10:

29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h5 38.Rb6 h4 39.a6 Ke5
+- (1.69) Depth: 16/41 00:01:12 59609kN
29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h6 38.Rb5 Ra4 39.Rb6
+- (1.45) Depth: 17/42 00:02:30 123mN
29.Nxd4 Qxd4
± (1.16) Depth: 18/51 00:04:25 193mN

Jouni

[AdminX]

Weird position really. I followed game by R3 (what else) and noticed in seconds d4 is tabu, but look famous tactician Fritz No wonder Kramnik fails.

Analysis by Fritz 10:

29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h5 38.Rb6 h4 39.a6 Ke5
+- (1.69) Depth: 16/41 00:01:12 59609kN
29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h6 38.Rb5 Ra4 39.Rb6
+- (1.45) Depth: 17/42 00:02:30 123mN
29.Nxd4 Qxd4
± (1.16) Depth: 18/51 00:04:25 193mN

Jouni

Kramnik,V - Anand,V, World Chess Championship 2008 2008
8/1b1nkp1p/4pq2/1B6/PP1p1pQ1/2r2N2/5PPP/4R1K1 w - - 0 1

Analysis by Deep Rybka 3 x64:

29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Rf2 37.a5
+/= (0.65) Depth: 6 00:00:00 2kN
+/- (1.07) Depth: 8 00:00:00 9kN

29.Ng5 Ne5 30.Qh5
=/+ (-0.32) Depth: 9 00:00:01 106kN

29.Nd2 d3 30.Bxd7 Kxd7 31.Rd1 Qg6 32.Qxg6 hxg6 33.g3 fxg3 34.fxg3 Kc7 35.Kf2 e5 36.Ke3
= (0.02) Depth: 9 00:00:02 281kN
=/+ (-0.33) Depth: 12 00:00:11 1678kN

29.Bxd7 Kxd7[] 30.Ng5 h6 31.Nh7 Qe5 32.Rd1 Rc4 33.Qg8 Qf5 34.Qg7 e5 35.Qxh6 Rxb4 36.Nf6+ Ke6 37.Ne4+
= (-0.12) Depth: 12 00:00:13 1933kN
= (-0.12) Depth: 13 00:00:13 1987kN

29.Nd2 d3 30.a5 Rc2 31.Bxd7 Kxd7 32.Rd1 Ke7
= (0.00) Depth: 14 00:00:35 5357kN
=/+ (-0.29) Depth: 17 00:04:12 39582kN

But notice how Hiarcs spotted it quickly as well.

Kramnik,V - Anand,V, World Chess Championship 2008 2008
8/1b1nkp1p/4pq2/1B6/PP1p1pQ1/2r2N2/5PPP/4R1K1 w - - 0 1

Analysis by HIARCS 12 MP:

29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.h3 Rc1+ 34.Bf1 Bc8 35.Rd4 Ke5 36.Rd8 Nf6
+/= (0.68) Depth: 10/30 00:00:00 560kN
-+ (-2.11) Depth: 11/32 00:00:01 1660kN

29.Nd2 d3 30.Qh5 Rc2 31.Bxd7 Rxd2 32.Bb5 Kf8 33.Qc5+ Kg7 34.a5 Re2
-+ (-2.10) Depth: 11/32 00:00:01 1731kN
= (-0.07) Depth: 11/35 00:00:05 7341kN

29.Bxd7 Bxf3 30.gxf3 Kxd7 31.Re4 Rc1+ 32.Kg2 Rc4 33.Rxf4 Qg6 34.a5 Rxb4 35.Kf1 Qxg4 36.fxg4 Ke7 37.Rf3 Rb1+ 38.Kg2 Ra1
= (-0.07) Depth: 11/35 00:00:05 7702kN
= (-0.19) Depth: 12/35 00:00:06 8830kN

29.Nd2 d3 30.Qh5 Rc2 31.Bxd7 Rxd2 32.Bb5 Kf8 33.Rb1 Qg7 34.Bc6 Bxc6
= (-0.18) Depth: 12/35 00:00:06 8925kN
=/+ (-0.32) Depth: 14/38 00:00:23 33174kN

29.Bxd7 Bxf3 30.gxf3 Kxd7 31.Kf1 d3
=/+ (-0.32) Depth: 14/38 00:00:24 34337kN
=/+ (-0.56) Depth: 15/42 00:00:37 55242kN

29.Nd2 d3 30.a5 Rc2 31.Bxd7 Kxd7 32.Rd1 Ke7 33.h4 Rb2 34.Qh5 Bd5 35.Nf3 Rxb4 36.Qxh7 Be4 37.Qh5 Bf5 38.Rc1 Rb2 39.Rc7+ Ke8
=/+ (-0.55) Depth: 15/42 00:00:37 56021kN
=/+ (-0.32) Depth: 16/42 00:01:27 127mN

[CRoberson]

At the beginning of 17 ply, Telepath thinks Nxd4 is ok.
At the end of 17 ply, Telepath sees it is bad and suggests Bxd7.

Stepping throught the game, it takes 14 ply to see the issue by hand.
Tough position in that Kramnik must have been eagerly looking to
capitalize on his outside connected passers. Nxd4 looks like it does
the job for several plies.

I & Telepath think that Kramnik played very well until that move.
I expect Kramnik to make a great comeback!

[Cubeman]

PocketFritz3 with Hiarcs 12.1 needs 2min 48 secs at D=12 to decide against Nxd4 and instaed liked Nd2.

[Norm Pollock]

I wish fans would not call it a blunder. Kramnik's analysis did not go as deep as Anand's analysis, and that may have been due to time pressure. Call it being outplayed, but don't call it a blunder.

[Albert Silver]

I wish fans would not call it a blunder. Kramnik's analysis did not go as deep as Anand's analysis, and that may have been due to time pressure. Call it being outplayed, but don't call it a blunder.

Just because it is deep, doesn't make it less a blunder. It changes the evaluation of the position from balanced to dead lost in one move. It was undoubtedly a deep trap by Anand, but the venomous pawn still needed to be captured to work.

[Dann Corbit]

I wish fans would not call it a blunder. Kramnik's analysis did not go as deep as Anand's analysis, and that may have been due to time pressure. Call it being outplayed, but don't call it a blunder.

Something that I found surprising is Yasser Seirawan's description of his own chess moves in his "Winning Chess" series of books. When he does something less than the best possible move, he will put a ? next to it, and sometimes next to something that still seems a decent move he will put ??, just because he did not see the optimal move. I find myself (when reading his books) wondering aloud how he would comment a game that I played. I guess that the universe would run out of question marks before he could finish.

[Jouni]

More time to Fritz:

29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h5 38.Rb6 h4 39.a6 Ke5 40.Rc6
+- (1.69) Depth: 15/37 00:00:33 27674kN
29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h5 38.Rb6 h4 39.a6 Ke5
+- (1.69) Depth: 16/41 00:01:09 59609kN
29.Nxd4 Qxd4 30.Rd1 Nf6 31.Rxd4 Nxg4 32.Rd7+ Kf6 33.Rxb7 Rc1+ 34.Bf1 Nxh2 35.Kxh2 Rxf1 36.f3 Ra1 37.a5 h6 38.Rb5 Ra4 39.Rb6
+- (1.45) Depth: 17/42 00:02:21 123mN
29.Nxd4 Qxd4
± (1.16) Depth: 18/51 00:03:39 193mN
29.Nxd4 Qxd4 30.Bxd7 Kxd7 31.h3 h6 32.Rd1 Rd3 33.Rxd3 Qxd3 34.Qxf4 Qd1+ 35.Kh2 Qd6 36.Qxd6+ Kxd6 37.Kg3 e5 38.Kh2
-+ (-2.13) Depth: 18/58 00:20:42 1128mN
29.Nd2
-+ (-2.12) Depth: 18/58 00:21:42 1179mN
29.Nd2
-+ (-1.97) Depth: 18/58 00:21:55 1190mN

Jouni