Deep Blue - Kasparov, 1997 game 2

[Fguy64]

http://en.wikipedia.org/wiki/Deep_Blue_ ... y_Kasparov

According to observers, instead of resigning after 45.Ra6, Kasparov could have saved the game by 45...Ke3 with threats of perpetual check after 46.Qxd6 Re8. It is also claimed that Deep Blue "erred" by allowing 45...Qe3.

So my question is how reasonable is it to expect that Deep Blue should have seen the perpetual at the given time control. After all as I see it a computer would have to be thinking at a deep eough ply, or else check extensions, and even then the only way there is a perpetual is if White tries to force the win.

So yeah, I agree that Kaspy messed up, but it's a bit of a stretch to say that Deep Blue erred i would say.

[Uri Blass]

1)I do not expect computers not to make mistakes
and I see no problem with saying that deep blue erred.

2)Today top programs play better than deep blue and do not allow 45...Qe3

Seeing the perpetual check(or equal material) is forced is possible with enough extensions but even without seeing the perpetual check programs can find Qe3 because black can get pawns and initiative for the piece and it is better than the alternatives so earlier they are not going to allow Qe3 because there is an alternative that is better for white.

You do not need to see a forced draw and even if you see Qe3 as a line that is evaluated as +1 for white when another line is evaluated as more than +1 for white then it is enough not to allow Qe3+

I believe that Deep blue had inferior evaluation function relative to today programs so it could not understand the danger of Qe3 for white(I do not blame the developers of it because they had no time for testing and tuning their evaluation but my opinion is that deep blue had some bad trade term that caused it to prefer the bishop too much against pawns in unbalanced positions)

[Fguy64]

hmm ok makes some sense.

I (without an engine) looked (not deeply) at the line 45...Qe3 46.Qxd6 Re8 47.Ra1 (to stop the perp) 47...Qxe4. It looks like white is much better except that I think that it is necessary to bring the rook to the 7th rank to press the advantage, and doing so exposes the White King to perpetual, and so maybe this is the sort of thing that Deep Blue overlooked, and maybe this is the sort of thing that just check extensions might not help with.

just a guess.

[Uri Blass]

hmm ok makes some sense.

I (without an engine) looked (not deeply) at the line 45...Qe3 46.Qxd6 Re8 47.Ra1 (to stop the perp) 47...Qxe4. It looks like white is much better except that I think that it is necessary to bring the rook to the 7th rank to press the advantage, and doing so exposes the White King to perpetual, and so maybe this is the sort of thing that Deep Blue overlooked, and maybe this is the sort of thing that just check extensions might not help with.

just a guess.

47.Ra1 is possible but it is not what chess programs suggest and it is also clear that nothing except simple perpetual check was the plan of deep blue in case that kasparov played Qe3.

Otherwise the deep blue team could say it in that time and say that it is not a clear draw and they did not say after the game that deep blue could get practical chances even after Qe3 because I guess that they saw that deep blue against itself is a draw by perpetual check and not some equal material position.

45. ...Qe3
46. Qxd6 Re8
47. Qd7+ Re7
48. Qc6! is the best line based on computer analysis and white clearly has at least practical chances.

see the comments of JamesMazur2 frpm Sep-19-09 and spe-21-09


http://www.chessgames.com/perl/chessgame?gid=1070913

[Dann Corbit]

Here is some analysis I did against game 2 positions, some time ago...

[d]1b4k1/6p1/5p1p/Pp1PpP2/2p5/2P4P/2B3P1/6K1 w - - acd 33; acn 39024361821; acs 10720804; bm Be4; ce 350; id "NM(pv)-1j"; pv Be4 Ba7+ Kf1 Kf7 Ke2;

[d]r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - acd 32/87; acn 27740650800; acs 1537202; bm Be4; ce 82; pv Be4 Rcb8 Ra6 Qd8 Kh2 Kh7 g4 Rxa6 Rxa6 Rb7 Kg2 Kg8 Qa2 Kf7 Kg3 Ke7 Qa3 Qc7 Qa1 Kf7 Qg1 Qd8 Kg2 Kg8 Qf2 Kh8 Qa2 Kh7 Kf3 Bb8 Ra8 Qc7 d6 Qd7 Bxb7 Qxb7+ Kg3 Bxd6;

[d]r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - acd 30; acn 4505215255; acs 1123243; bm Be4; ce 60; pv Be4 Qd8 Kh2 Rxa2 Qxa2 Rb8 g3 Kf8 Kg2 Bc7 Qa7 Bb6 Qa6 Bc7 Qc6 Rb6 Qa8;

[d]r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - acd 26/77; acn 6379248338; acs 388854; bm axb5; ce 80; pv axb5 axb5 Be4 Qd8 Kh2 Rcb8 Ra6 Rxa6 Rxa6 Rb7 Qa2 Kh7 Qe2 Kg8 Qf2 Kh8 Qe3 Kg8 g4 Kh7 Qf2 Kh8 Qa2 Rb8 Ra7 Qb6 Kh1 Rd8;

[Fguy64]

hmm ok makes some sense.

I (without an engine) looked (not deeply) at the line 45...Qe3 46.Qxd6 Re8 47.Ra1 (to stop the perp) 47...Qxe4. It looks like white is much better except that I think that it is necessary to bring the rook to the 7th rank to press the advantage, and doing so exposes the White King to perpetual, and so maybe this is the sort of thing that Deep Blue overlooked, and maybe this is the sort of thing that just check extensions might not help with.

just a guess.

47.Ra1 is possible but it is not what chess programs suggest and it is also clear that nothing except simple perpetual check was the plan of deep blue in case that kasparov played Qe3.

Otherwise the deep blue team could say it in that time and say that it is not a clear draw and they did not say after the game that deep blue could get practical chances even after Qe3 because I guess that they saw that deep blue against itself is a draw by perpetual check and not some equal material position.

45. ...Qe3
46. Qxd6 Re8
47. Qd7+ Re7
48. Qc6! is the best line based on computer analysis and white clearly has at least practical chances.

see the comments of JamesMazur2 frpm Sep-19-09 and spe-21-09


http://www.chessgames.com/perl/chessgame?gid=1070913

hmmm those posts of Mazur's are hardly conclusive. A couple of 50 move lines ending in a win for white, acompanied by the comment ( This is good play though definitely not perfect )

As for the bolded remark above, on what basis is it "clear" that Deep Blue's plan was to allow perpetual check? It's hardly clear from anything I've seen here.

As for Qc6 being best based on computer analysis and white clearly (there's that word again) has "practical" analysis, what does "practical" mean? Rybkka runs overnight calculating the odds of Black making a mistake?

Anyways, you might be right, I just don't see any value on quoting selected computer analyses without actually proving the point. And besides, What Rybbka says is not the point. I'm more interested in what Deep Blue "thought", and lets face it, the Deep Blue team was definitely not known as forthcoming.

[Fguy64]

Here is some analysis I did against game 2 positions, some time ago...

[d]1b4k1/6p1/5p1p/Pp1PpP2/2p5/2P4P/2B3P1/6K1 w - - acd 33; acn 39024361821; acs 10720804; bm Be4; ce 350; id "NM(pv)-1j"; pv Be4 Ba7+ Kf1 Kf7 Ke2;

[d]r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - acd 32/87; acn 27740650800; acs 1537202; bm Be4; ce 82; pv Be4 Rcb8 Ra6 Qd8 Kh2 Kh7 g4 Rxa6 Rxa6 Rb7 Kg2 Kg8 Qa2 Kf7 Kg3 Ke7 Qa3 Qc7 Qa1 Kf7 Qg1 Qd8 Kg2 Kg8 Qf2 Kh8 Qa2 Kh7 Kf3 Bb8 Ra8 Qc7 d6 Qd7 Bxb7 Qxb7+ Kg3 Bxd6;

[d]r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - acd 30; acn 4505215255; acs 1123243; bm Be4; ce 60; pv Be4 Qd8 Kh2 Rxa2 Qxa2 Rb8 g3 Kf8 Kg2 Bc7 Qa7 Bb6 Qa6 Bc7 Qc6 Rb6 Qa8;

[d]r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - acd 26/77; acn 6379248338; acs 388854; bm axb5; ce 80; pv axb5 axb5 Be4 Qd8 Kh2 Rcb8 Ra6 Rxa6 Rxa6 Rb7 Qa2 Kh7 Qe2 Kg8 Qf2 Kh8 Qe3 Kg8 g4 Kh7 Qf2 Kh8 Qa2 Rb8 Ra7 Qb6 Kh1 Rd8;

I really don't have the experience, or the software, to decipher this. Is this convincing evidence that a decent program would not allow ...Qe3? Can it be rephrased in chessic terms? My chess is a lot better than my code reading.

[bob]

hmm ok makes some sense.

I (without an engine) looked (not deeply) at the line 45...Qe3 46.Qxd6 Re8 47.Ra1 (to stop the perp) 47...Qxe4. It looks like white is much better except that I think that it is necessary to bring the rook to the 7th rank to press the advantage, and doing so exposes the White King to perpetual, and so maybe this is the sort of thing that Deep Blue overlooked, and maybe this is the sort of thing that just check extensions might not help with.

just a guess.

47.Ra1 is possible but it is not what chess programs suggest and it is also clear that nothing except simple perpetual check was the plan of deep blue in case that kasparov played Qe3.

Otherwise the deep blue team could say it in that time and say that it is not a clear draw and they did not say after the game that deep blue could get practical chances even after Qe3 because I guess that they saw that deep blue against itself is a draw by perpetual check and not some equal material position.

45. ...Qe3
46. Qxd6 Re8
47. Qd7+ Re7
48. Qc6! is the best line based on computer analysis and white clearly has at least practical chances.

see the comments of JamesMazur2 frpm Sep-19-09 and spe-21-09


http://www.chessgames.com/perl/chessgame?gid=1070913

hmmm those posts of Mazur's are hardly conclusive. A couple of 50 move lines ending in a win for white, acompanied by the comment ( This is good play though definitely not perfect )

As for the bolded remark above, on what basis is it "clear" that Deep Blue's plan was to allow perpetual check? It's hardly clear from anything I've seen here.

As for Qc6 being best based on computer analysis and white clearly (there's that word again) has "practical" analysis, what does "practical" mean? Rybkka runs overnight calculating the odds of Black making a mistake?

Anyways, you might be right, I just don't see any value on quoting selected computer analyses without actually proving the point. And besides, What Rybbka says is not the point. I'm more interested in what Deep Blue "thought", and lets face it, the Deep Blue team was definitely not known as forthcoming.

The logs are public. How much more forthcoming can they be?

[bob]

Here is some analysis I did against game 2 positions, some time ago...

[d]1b4k1/6p1/5p1p/Pp1PpP2/2p5/2P4P/2B3P1/6K1 w - - acd 33; acn 39024361821; acs 10720804; bm Be4; ce 350; id "NM(pv)-1j"; pv Be4 Ba7+ Kf1 Kf7 Ke2;

[d]r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - acd 32/87; acn 27740650800; acs 1537202; bm Be4; ce 82; pv Be4 Rcb8 Ra6 Qd8 Kh2 Kh7 g4 Rxa6 Rxa6 Rb7 Kg2 Kg8 Qa2 Kf7 Kg3 Ke7 Qa3 Qc7 Qa1 Kf7 Qg1 Qd8 Kg2 Kg8 Qf2 Kh8 Qa2 Kh7 Kf3 Bb8 Ra8 Qc7 d6 Qd7 Bxb7 Qxb7+ Kg3 Bxd6;

[d]r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - acd 30; acn 4505215255; acs 1123243; bm Be4; ce 60; pv Be4 Qd8 Kh2 Rxa2 Qxa2 Rb8 g3 Kf8 Kg2 Bc7 Qa7 Bb6 Qa6 Bc7 Qc6 Rb6 Qa8;

[d]r1r1q1k1/6p1/p2b1p1p/1p1PpP2/PPp5/2P4P/R1B2QP1/R5K1 w - - acd 26/77; acn 6379248338; acs 388854; bm axb5; ce 80; pv axb5 axb5 Be4 Qd8 Kh2 Rcb8 Ra6 Rxa6 Rxa6 Rb7 Qa2 Kh7 Qe2 Kg8 Qf2 Kh8 Qe3 Kg8 g4 Kh7 Qf2 Kh8 Qa2 Rb8 Ra7 Qb6 Kh1 Rd8;

I really don't have the experience, or the software, to decipher this. Is this convincing evidence that a decent program would not allow ...Qe3? Can it be rephrased in chessic terms? My chess is a lot better than my code reading.

It is more likely that simply programs don't understand what is going on. And whether they play Kh1 or something else is based on random luck rather than understanding here.

This draw is _deep_. Several of us spent all night using every computer we had to convince everyone it was really drawn. Until then, even the best player on the planet thought it was lost.

[Dann Corbit]

http://en.wikipedia.org/wiki/Deep_Blue_ ... y_Kasparov

According to observers, instead of resigning after 45.Ra6, Kasparov could have saved the game by 45...Ke3 with threats of perpetual check after 46.Qxd6 Re8. It is also claimed that Deep Blue "erred" by allowing 45...Qe3.

So my question is how reasonable is it to expect that Deep Blue should have seen the perpetual at the given time control. After all as I see it a computer would have to be thinking at a deep eough ply, or else check extensions, and even then the only way there is a perpetual is if White tries to force the win.

So yeah, I agree that Kaspy messed up, but it's a bit of a stretch to say that Deep Blue erred i would say.

Analysys of this other point of interest:

[d]1r6/5kp1/RqQb1p1p/1p1PpP2/1Pp1B3/2P4P/6P1/5K2 b - - acd 27; acn 6865646506; acs 1573205; bm Qe3; ce -77; pv Qe3 Qxd6 Re8 Qc7+ Re7 Qc6 Qxe4 d6 Qd3+ Kg1 Re8 Ra1 h5 Kh2 h4 Qxb5 Rd8 Qc6 Kg8 b5 Qg3+ Kh1 Qxc3 Rd1 Qc2 Re1 Qd3 b6 Qxd6 Qxc4+ Qd5;

Code: Select all

Analysis from C:\tmp\db.epd   
9/25/2009 12:21:39 AM Level: 36000 Seconds
Analyzing engine: Rybka 3

1)                      
    Avoid move: 
    Best move (Rybka 3): Qb6-e3
    Not found in: 10:00:00
      2	00:00	         369	11.808	-0.97	Qb6xc6
      3	00:00	         748	23.936	-1.31	Qb6xc6
      4	00:00	         916	29.312	-1.37	Qb6xc6
      5	00:00	       1.503	48.096	-1.51	Qb6xc6 d5xc6 Kf7f8
      6	00:00	       2.969	63.338	-1.68	Qb6xc6 d5xc6 Kf7f8 Ra6a7
      7	00:00	       8.829	114.441	-1.96	Qb6xc6 d5xc6 Kf7f8 Ra6a7 Rb8c8 Kf1e2
      7+	00:00	      17.246	160.544	-1.48	Qb6e3 Qc6xd6
      7+	00:00	      21.168	172.032	-1.08	Qb6e3 Qc6xd6
      7	00:00	      32.788	178.589	-1.96	Qb6xc6 d5xc6 Kf7f8 Ra6a7 Rb8c8 Kf1e2
      8	00:00	      51.252	139.952	-2.16	Qb6xc6 d5xc6 Kf7e8 Ra6a7 Rb8c8 Ra7xg7 Rc8c7 Rg7g6
      9	00:00	      58.519	136.811	-2.32	Qb6xc6 d5xc6 Kf7e8 Ra6a7 Rb8c8 Ra7xg7
     10	00:00	      79.543	144.675	-2.27	Qb6xc6 d5xc6 Kf7e8 Ra6a7 Rb8c8 Ra7xg7 Rc8c7 Rg7g6 Bd6e7 Rg6xh6
     11	00:01	     117.460	154.006	-2.38	Qb6xc6 d5xc6 Kf7e8 Ra6a7 Rb8c8 Ra7xg7 Rc8c7 Rg7g6 Ke8f7 Rg6xh6 Bd6f8 Rh6h7+ Bf8g7
     11+	00:02	     325.198	187.185	-2.07	Qb6e3
     11+	00:05	   1.077.787	214.343	-0.67	Qb6e3
     11	00:06	   1.310.612	213.977	-0.75	Qb6e3 Qc6xd6 Rb8e8
     12	00:07	   1.447.540	215.416	-0.79	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4xc6 Ra6xc6 Re7d7 Kf1f2 Kf7e8 Rc6b6 Rd7a7 Rb6xb5 Ke8d7 Rb5c5 Kd7xd6 Rc5xc4 Kd6d5
     13+	00:09	   2.105.785	225.109	-0.59	Qb6e3
     13+	00:12	   2.792.296	233.775	-0.39	Qb6e3
     13	00:16	   3.742.340	238.942	-0.17	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Kg1h2 Qd3xf5 Ra6a2 Re8d8 Qc6xb5 Rd8xd6 Qb5xc4+ Kf7g6 Ra2a7 Kg6h7
     14	00:19	   4.558.324	243.440	-0.27	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Kg1h2 Qd3xf5 Ra6a2 Re8d8 Qc6xb5 Rd8xd6 Qb5xc4+ Kf7g6 Ra2a7 Kg6h7 Qc4g4 Qf5xg4 h3xg4 Rd6c6 Ra7a3 Rc6b6 Ra3b3 e5e4 Kh2g3
     15	00:31	   7.399.851	245.431	-0.38	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Qc6d7+ Kf7f8 Kg1h2 Qd3d2
     16	00:51	  13.059.067	259.594	-0.21	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Kg1h2 Qd3xf5 Ra6a2 Re8d8 Qc6xb5 Rd8xd6 Qb5xc4+ Kf7g6 Ra2a7 Kg6h7 Ra7e7 Rd6d2 Qc4g4 Qf5xg4 h3xg4 Rd2b2 Kh2g3 Kh7g6 Re7c7 Rb2b3
     17	01:45	  24.943.148	242.594	-0.75	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 Kf7f8 Kg1h2 Qd3d2 Qc6c7 Kf8g8 d6d7 Re8f8 Ra1f1 h6h5
     18	02:06	  30.137.710	244.408	-0.75	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 Kf7f8 Kg1h2 Qd3d2 Qc6c7 Kf8g8 d6d7 Re8f8 Ra1f1 h6h5
     19	03:03	  43.884.049	245.509	-0.76	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 Kf7f8 Kg1h2 Qd3d2 Qc6c7 Kf8g8 d6d7 Re8f8 Ra1f1 h6h5 Rf1f3 h5h4 Rf3f1 Kg8h7 Qc7c8 Kh7g8 Qc8e8 e5e4
     20	05:51	  87.843.820	255.884	-0.69	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Qc6c7+ Kf7g8 d6d7 Re8f8 Qc7c8 e5e4 Qc8e8 Qd3d2 Ra1f1 h5h4 Qe8e7 e4e3 Rf1f3 Kg8h7 Rf3xe3 Rf8d8 Qe7e4 Qd2xd7
     21	13:52	 205.039.639	252.218	-0.79	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Kg1h2 h5h4 Qc6xb5 Re8d8 Qb5c6 Kf7g8 b4b5 Qd3g3+ Kh2h1 Qg3xc3 Ra1g1
     22	18:31	 275.871.914	254.270	-0.79	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Kg1h2 h5h4 Qc6xb5 Re8d8 Qb5c6 Kf7g8 b4b5 Qd3g3+ Kh2h1 Qg3xc3 Ra1g1
     23	35:38	 518.945.462	248.512	-0.94	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Qc6xb5 Re8d8 Qb5b7+ Kf7g8 Qb7e7 Qd3xd6 Qe7xd6 Rd8xd6 Ra1a8+ Kg8h7 Ra8c8 Kh7h6 h3h4 g7g5 f5xg6/ep Rd6d2
     24	1:01:11	 917.301.356	255.836	-0.87	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Kg1h2 h5h4 Qc6xb5 Re8d8 Qb5c6 Kf7g8 b4b5 Qd3g3+ Kh2h1 Qg3xc3 Ra1d1 Qc3c2 Rd1e1 Qc2d3 b5b6 Qd3xd6 Qc6xc4+ Qd6d5
     25	1:45:48	1.608.276.579	259.426	-0.87	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Kg1h2 h5h4 Qc6xb5 Re8d8 Qb5c6 Kf7g8 b4b5 Qd3g3+ Kh2h1 Qg3xc3 Ra1d1 Qc3c2 Rd1e1 Qc2d3 b5b6 Qd3xd6 Qc6xc4+ Qd6d5
     26	3:34:21	3.336.336,956	265.645	-0.80	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Kg1h2 h5h4 Qc6xb5 Re8d8 Qb5c6 Kf7g8 b4b5 Qd3g3+ Kh2h1 Qg3xc3 Ra1d1 Qc3c2 Rd1e1 Qc2d3 b5b6 Qd3xd6 Qc6xc4+ Qd6d5
     27	7:17:05	6.865.646,506	268.082	-0.77	Qb6e3 Qc6xd6 Rb8e8 Qd6c7+ Re8e7 Qc7c6 Qe3xe4 d5d6 Qe4d3+ Kf1g1 Re7e8 Ra6a1 h6h5 Kg1h2 h5h4 Qc6xb5 Re8d8 Qb5c6 Kf7g8 b4b5 Qd3g3+ Kh2h1 Qg3xc3 Ra1d1 Qc3c2 Rd1e1 Qc2d3 b5b6 Qd3xd6 Qc6xc4+ Qd6d5
   9/25/2009 10:21:46 AM, Time for this analysis: 10:00:00, Rated time: 10:00:00

0 of 1 matching moves
9/25/2009 10:21:47 AM, Total time: 10:00:07 AM
Rated time: 10:00:00 = 36000 Seconds