Most beautiful computer chess game ever played?

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bigo

Most beautiful computer chess game ever played?

Post by bigo »

[Event "?"]
[Site "?"]
[Date "2008.01.06"]
[Round "?"]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "0-1"]
[ECO "C41"]
[Annotator "Ingo Althofer"]
[PlyCount "64"]
[EventDate "2008.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. g3 Nc6 7. Bg2 O-O 8.
O-O Bg4 9. f3 Nxd4 10. Qxd4 Be6 11. f4 c5 12. Qd2 Re8 13. b3 c4 14. Kh1 Rc8 15.
Bb2 Qa5 16. Qd4 Bf8 17. Rae1 a6 18. Bf3 Bh3 19. Bg2 Qh5 20. Qd2 b5 21. a3 d5
22. exd5 Ng4 23. b4 Bxg2+ 24. Qxg2 Ne3 25. Qf3 Nxf1 26. Qxh5 Rxe1 27. Kg2 Rce8
28. Qf3 Ne3+ 29. Kh3 f5 30. d6 Re6 31. Kh4 Rh6+ 32. Kg5 Rxd6 {
White resigned 0-1} 0-1




Surely this game should apear in the human chess magazines. game of year ? :wink:
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tjfroh
Posts: 8087
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Location: Near the Intel Plant in the Land of Manana
Full name: Timothy Frohlick

Re: Most beautiful computer chess game ever played?

Post by tjfroh »

[Event "?"]
[Site "?"]
[Date "2008.01.06"]
[Round "?"]
[White "Fritz 10"]
[Black "Frohlick, Timothy"]
[Result "0-1"]
[ECO "C41"]
[Annotator "Ingo Althofer"]
[PlyCount "90"]
[EventDate "2008.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. g3 Nc6 7. Bg2 O-O 8.
O-O Bg4 9. f3 Nxd4 10. Qxd4 Be6 11. f4 c5 12. Qd2 Re8 13. b3 c4 14. Kh1 Rc8 15.
Bb2 Qa5 16. Qd4 Bf8 17. Rae1 a6 18. Bf3 Bh3 19. Bg2 Qh5 20. Qd2 b5 21. a3 d5
22. exd5 Ng4 23. b4 Bxg2+ 24. Qxg2 Ne3 25. Qf3 Nxf1 26. Qxh5 Rxe1 27. Kg2 Rce8
28. Qf3 Ne3+ 29. Kh3 f5 30. d6 Re6 31. Kh4 Rh6+ 32. Kg5 Rxd6 {
White resigned 0-1} 33. Qxe3 {-11.49/13 2} Rxe3 {-12.33/14 1} 34. Kxf5 {
-13.18/14 1} g6+ {-13.58/15 2} 35. Kg5 {-13.95/14 1} Bg7 {-13.86/14 4} 36. Nxb5
{-14.67/15 1} axb5 {-16.93/13 1} 37. Bc1 {-17.21/13 2} Re1 {-18.67/13 1} 38.
Bb2 {-19.16/13 1} Bxb2 {-20.28/13 1} 39. Kg4 {-#9/9 1} h5+ {-#7/6 0} 40. Kf3 {
-#6/7 0} Rd2 {-#6/6 0} 41. c3 {-#5/6 0} Bxc3 {-#5/5 0} 42. g4 {-#4/5 0} Rf1+ {
-#4/5 0} 43. Ke3 {-#3/5 0} Rd3+ {-#3/5 0} 44. Ke2 {-#2/5 0} Rdd1 {-#2/5 0} 45.
gxh5 {-#1/5 0} Rde1# {-#1/5 0} 0-1

[d]6k1/8/6p1/1p5P/1Pp2P2/P1b5/4K2P/4rr2 w - - 0 46

Final possible position after black mates.

Indeed--a nice game by Rybka. The playout by Fritz 10 shows how lost Benjamin was at the resignation point.

TJ
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Man marks his ground with ideologies.
Galaxies are the dreidels of God.
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Dr.Ex
Posts: 202
Joined: Sun Jul 08, 2007 4:10 am

Re: Most beautiful computer chess game ever played?

Post by Dr.Ex »

bigo wrote:[Event "?"]
[Site "?"]
[Date "2008.01.06"]
[Round "?"]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "0-1"]
[ECO "C41"]
[Annotator "Ingo Althofer"]
[PlyCount "64"]
[EventDate "2008.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. g3 Nc6 7. Bg2 O-O 8.
O-O Bg4 9. f3 Nxd4 10. Qxd4 Be6 11. f4 c5 12. Qd2 Re8 13. b3 c4 14. Kh1 Rc8 15.
Bb2 Qa5 16. Qd4 Bf8 17. Rae1 a6 18. Bf3 Bh3 19. Bg2 Qh5 20. Qd2 b5 21. a3 d5
22. exd5 Ng4 23. b4 Bxg2+ 24. Qxg2 Ne3 25. Qf3 Nxf1 26. Qxh5 Rxe1 27. Kg2 Rce8
28. Qf3 Ne3+ 29. Kh3 f5 30. d6 Re6 31. Kh4 Rh6+ 32. Kg5 Rxd6 {
White resigned 0-1} 0-1

Surely this game should apear in the human chess magazines. game of year ? :wink:
Surely not, for a brillancy price both players have to play a decent game.
This game was decided by the horrible blunder 23.b4.
Even in case he missed the obvious possibility 25...Nxf1, the endgame after 25...Qxf3 26.Rxf3 Nxc2 would have been clearly better for black too.

23.Bxh3 Qxh3 24.b4 gives white decent drawing chances.
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George Tsavdaris
Posts: 1627
Joined: Thu Mar 09, 2006 12:35 pm

Re: Most beautiful computer chess game ever played?

Post by George Tsavdaris »

Dr.Ex wrote:
bigo wrote:[Event "?"]
[Site "?"]
[Date "2008.01.06"]
[Round "?"]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "0-1"]
[ECO "C41"]
[Annotator "Ingo Althofer"]
[PlyCount "64"]
[EventDate "2008.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. g3 Nc6 7. Bg2 O-O 8.
O-O Bg4 9. f3 Nxd4 10. Qxd4 Be6 11. f4 c5 12. Qd2 Re8 13. b3 c4 14. Kh1 Rc8 15.
Bb2 Qa5 16. Qd4 Bf8 17. Rae1 a6 18. Bf3 Bh3 19. Bg2 Qh5 20. Qd2 b5 21. a3 d5
22. exd5 Ng4 23. b4 Bxg2+ 24. Qxg2 Ne3 25. Qf3 Nxf1 26. Qxh5 Rxe1 27. Kg2 Rce8
28. Qf3 Ne3+ 29. Kh3 f5 30. d6 Re6 31. Kh4 Rh6+ 32. Kg5 Rxd6 {
White resigned 0-1} 0-1

Surely this game should apear in the human chess magazines. game of year ? :wink:
Surely not, for a brillancy price both players have to play a decent game.
This game was decided by the horrible blunder 23.b4.
Even in case he missed the obvious possibility 25...Nxf1, the endgame after 25...Qxf3 26.Rxf3 Nxc2 would have been clearly better for black too.

23.Bxh3 Qxh3 24.b4 gives white decent drawing chances.
After 24...a5! i don't think that white has decent drawing chances, especially if we're talking for a 2600 GM against a computer....
Position is too tactical.
After his son's birth they've asked him:
"Is it a boy or girl?"
YES! He replied.....
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Dr.Ex
Posts: 202
Joined: Sun Jul 08, 2007 4:10 am

Re: Most beautiful computer chess game ever played?

Post by Dr.Ex »

George Tsavdaris wrote:
Dr.Ex wrote:
bigo wrote:[Event "?"]
[Site "?"]
[Date "2008.01.06"]
[Round "?"]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "0-1"]
[ECO "C41"]
[Annotator "Ingo Althofer"]
[PlyCount "64"]
[EventDate "2008.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. g3 Nc6 7. Bg2 O-O 8.
O-O Bg4 9. f3 Nxd4 10. Qxd4 Be6 11. f4 c5 12. Qd2 Re8 13. b3 c4 14. Kh1Rc8 15.
Bb2 Qa5 16. Qd4 Bf8 17. Rae1 a6 18. Bf3 Bh3 19. Bg2 Qh5 20. Qd2 b5 21. a3 d5
22. exd5 Ng4 23. b4 Bxg2+ 24. Qxg2 Ne3 25. Qf3 Nxf1 26. Qxh5 Rxe1 27. Kg2 Rce8
28. Qf3 Ne3+ 29. Kh3 f5 30. d6 Re6 31. Kh4 Rh6+ 32. Kg5 Rxd6 {
White resigned 0-1} 0-1

Surely this game should apear in the human chess magazines. game of year ? :wink:
Surely not, for a brillancy price both players have to play a decent game.
This game was decided by the horrible blunder 23.b4.
Even in case he missed the obvious possibility 25...Nxf1, the endgame after 25...Qxf3 26.Rxf3 Nxc2 would have been clearly better for black too.

23.Bxh3 Qxh3 24.b4 gives white decent drawing chances.
After 24...a5! i don't think that white has decent drawing chances, especially if we're talking for a 2600 GM against a computer....

I've looked at this variation before posting.
White can either play 25.Nxb5 axb4 26.axb4 Rb8 27.Nd4 Bxb4 28.c3 Bc5 29.Kg1 or try to invite Rybka to win a pawn with 25.Nxb5 axb4 26.Bd4 bxa3 27.d6 Rxe1 28.Rxe1 Qh5 29.Nxa3 Bxd6 30.Nb1 Nxh2 31.Qxh2 Qd5+ 32.Qg2 Qxd4 33.Nd2 (no progress idea).

The game could have been a brilliant one had Benjamin played 23.Nd1?
in order to cover the vulnerable f2,e3 squares. Rybka would have unleashed cxb3 24.cxb3 Rxe1 25.Rxe1 Nxh2! 26.Kxh2 Rc2 -+.
After 23.b4 white just loses without resistance it seems.

Anyway, it's hardly brilliant to give up a qeen for two rooks + attack.
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Dann Corbit
Posts: 12814
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Most beautiful computer chess game ever played?

Post by Dann Corbit »

Dr.Ex wrote:
George Tsavdaris wrote:
Dr.Ex wrote:
bigo wrote:[Event "?"]
[Site "?"]
[Date "2008.01.06"]
[Round "?"]
[White "GM Benjamin"]
[Black "Rybka"]
[Result "0-1"]
[ECO "C41"]
[Annotator "Ingo Althofer"]
[PlyCount "64"]
[EventDate "2008.??.??"]

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. g3 Nc6 7. Bg2 O-O 8.
O-O Bg4 9. f3 Nxd4 10. Qxd4 Be6 11. f4 c5 12. Qd2 Re8 13. b3 c4 14. Kh1Rc8 15.
Bb2 Qa5 16. Qd4 Bf8 17. Rae1 a6 18. Bf3 Bh3 19. Bg2 Qh5 20. Qd2 b5 21. a3 d5
22. exd5 Ng4 23. b4 Bxg2+ 24. Qxg2 Ne3 25. Qf3 Nxf1 26. Qxh5 Rxe1 27. Kg2 Rce8
28. Qf3 Ne3+ 29. Kh3 f5 30. d6 Re6 31. Kh4 Rh6+ 32. Kg5 Rxd6 {
White resigned 0-1} 0-1

Surely this game should apear in the human chess magazines. game of year ? :wink:
Surely not, for a brillancy price both players have to play a decent game.
This game was decided by the horrible blunder 23.b4.
Even in case he missed the obvious possibility 25...Nxf1, the endgame after 25...Qxf3 26.Rxf3 Nxc2 would have been clearly better for black too.

23.Bxh3 Qxh3 24.b4 gives white decent drawing chances.
After 24...a5! i don't think that white has decent drawing chances, especially if we're talking for a 2600 GM against a computer....

I've looked at this variation before posting.
White can either play 25.Nxb5 axb4 26.axb4 Rb8 27.Nd4 Bxb4 28.c3 Bc5 29.Kg1 or try to invite Rybka to win a pawn with 25.Nxb5 axb4 26.Bd4 bxa3 27.d6 Rxe1 28.Rxe1 Qh5 29.Nxa3 Bxd6 30.Nb1 Nxh2 31.Qxh2 Qd5+ 32.Qg2 Qxd4 33.Nd2 (no progress idea).

The game could have been a brilliant one had Benjamin played 23.Nd1?
in order to cover the vulnerable f2,e3 squares. Rybka would have unleashed cxb3 24.cxb3 Rxe1 25.Rxe1 Nxh2! 26.Kxh2 Rc2 -+.
After 23.b4 white just loses without resistance it seems.

Anyway, it's hardly brilliant to give up a qeen for two rooks + attack.
This is really interesting, as it shows some sort of problem with either the search or the eval of Rybka.

Given the position after moving 23. b4 and black has responded Bxg2+, Rybka still does not see the trouble:
[d]2r1rbk1/5ppp/p7/1p1P3q/1Pp2Pn1/P1N3P1/1BPQ2bP/4RR1K w - - bm Qxg2;

Code: Select all

    Searching move: Qd2xg2
    Best move (Rybkav2.3.2a.w32): Qd2xg2
    identical moves! Found in: 00:00
      5	00:00	         494	505.856	-0.41	Qd2xg2 Ng4e3
      6	00:00	       1.050	63.247	-0.45	Qd2xg2 Ng4e3 Qg2f3
      7	00:00	       2.622	83.904	-0.59	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2
      8	00:00	       5.665	73.429	-0.66	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2
      9	00:00	       8.256	76.163	-0.57	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4
     10	00:00	      12.071	71.449	-0.51	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2
     11	00:01	      19.632	61.103	-0.42	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5
     12	00:01	      32.624	59.232	-0.42	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5 Kh1g1
     13	00:01	      57.046	58.356	-0.43	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5 Kh1g1 Bf8d6
     14	00:02	     112.365	57.502	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     15	00:04	     187.649	56.135	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     16	00:06	     316.024	54.783	-0.33	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     17	00:11	     560.709	53.876	-0.29	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     18	00:24	   1.262.156	53.883	-0.28	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     19	00:38	   2.001.084	54.663	-0.33	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 f7f5
     20	01:13	   3.948.433	55.659	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 f7f5
     21	02:13	   7.859.223	60.637	-0.54	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8xe2 Nc3xe2 g7g6
     22	03:52	  14.692.426	64.923	-0.59	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8xe2 Nc3xe2 Ne1c2
   1/8/2008 7:42:45 PM, Time for this analysis: 00:06:25, Rated time: 19:46
Even more amazing, look at this (we are at 27. about to move Kg2):
[d]2r2bk1/5ppp/p7/1p1P3Q/1Pp2P2/P1N3P1/1BP4P/4rn1K w - - bm Kg2;
If you look at the pv, Rybka does not see the devastating reply f5! that is coming at move 29:

Code: Select all

    
    Searching move: Kh1-g2
    Best move (Rybkav2.3.2a.w32): Kh1-g2
    identical moves! Found in: 00:00
      5	00:00	       1.591	95.834	-0.43	Kh1g2 Nf1e3+ Kg2f2
      6	00:00	       2.807	89.824	-0.49	Kh1g2 Nf1e3+ Kg2f2 Ne3xc2
      7	00:00	       7.620	70.935	-0.19	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4
      8	00:00	      10.182	66.409	-0.24	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4 h7h6
      9	00:01	      14.624	59.661	-0.25	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4 h7h6 Bb2c3
     10	00:01	      33.442	60.717	-0.12	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re1f1 Qf3e2 Rf1g1
     11	00:01	      66.326	63.832	-0.37	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e2 Ne3xd5 Bb2d4
     12	00:02	     107.154	63.794	-0.41	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e2 Ne3xd5 Bb2d4 Bf8e7
     13	00:03	     173.644	60.831	-0.21	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e4 Ne3xd5 Bb2d4 Bf8e7 Ne4c3
     14	00:10	     625.785	63.971	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Ne3xc2 Qh5f5 Nc2d4 Qf5d7 Re1e7
     15	00:14	     815.009	62.834	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Bf8d6 Nc3e2 Ne3xc2 Ne2d4 Nc2xd4 Bb2xd4 Re1e4
     16	00:21	   1.352.454	65.505	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Bf8d6 Nc3e2 Ne3xc2 Ne2d4 Nc2xd4 Bb2xd4 Re1e4
     17	01:28	   5.438.147	63.391	-0.73	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Rd8d6 Kh3g2 Nf1e3+ Kg2f2 Ne3xc2 Qh5f3 Rd6h6
     18	01:44	   6.468.552	64.133	-0.67	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Nf1e3 Nc3e2 Ne3xd5 Qh5f3 Be7f6 Bb2xf6 Nd5xf6
     19	02:28	   9.616.749	66.811	-0.75	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Nf1e3 Nc3e2 Ne3xd5 Qh5f3 Be7f6 Bb2xf6 Nd5xf6
     20	03:41	  14.863.965	68.934	-0.78	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Rd8d6 Kh3g2 Nf1e3+ Kg2f2 Ne3xc2 f4f5 Re1e8 Qg5d2 Nc2e3
   1/8/2008 8:06:07 PM, Time for this analysis: 00:06:25, Rated time: 00:00
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Ovyron
Posts: 4562
Joined: Tue Jul 03, 2007 4:30 am

Re: Most beautiful computer chess game ever played?

Post by Ovyron »

Dann, can I have your permission to repost this at the Rybka forum?
Your beliefs create your reality, so be careful what you wish for.
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Dann Corbit
Posts: 12814
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Most beautiful computer chess game ever played?

Post by Dann Corbit »

Ovyron wrote:Dann, can I have your permission to repost this at the Rybka forum?
Sure. Everything I post here I formally donate to the public domain.

I'm probably all wet anyway.
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Ovyron
Posts: 4562
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Re: Most beautiful computer chess game ever played?

Post by Ovyron »

Dann Corbit wrote:This is really interesting, as it shows some sort of problem with either the search or the eval of Rybka.

Given the position after moving 23. b4 and black has responded Bxg2+, Rybka still does not see the trouble:
[d]2r1rbk1/5ppp/p7/1p1P3q/1Pp2Pn1/P1N3P1/1BPQ2bP/4RR1K w - - bm Qxg2;

Code: Select all

    Searching move: Qd2xg2
    Best move (Rybkav2.3.2a.w32): Qd2xg2
    identical moves! Found in: 00:00
      5	00:00	         494	505.856	-0.41	Qd2xg2 Ng4e3
      6	00:00	       1.050	63.247	-0.45	Qd2xg2 Ng4e3 Qg2f3
      7	00:00	       2.622	83.904	-0.59	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2
      8	00:00	       5.665	73.429	-0.66	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2
      9	00:00	       8.256	76.163	-0.57	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4
     10	00:00	      12.071	71.449	-0.51	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2
     11	00:01	      19.632	61.103	-0.42	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5
     12	00:01	      32.624	59.232	-0.42	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5 Kh1g1
     13	00:01	      57.046	58.356	-0.43	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5 Kh1g1 Bf8d6
     14	00:02	     112.365	57.502	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     15	00:04	     187.649	56.135	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     16	00:06	     316.024	54.783	-0.33	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     17	00:11	     560.709	53.876	-0.29	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     18	00:24	   1.262.156	53.883	-0.28	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     19	00:38	   2.001.084	54.663	-0.33	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 f7f5
     20	01:13	   3.948.433	55.659	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 f7f5
     21	02:13	   7.859.223	60.637	-0.54	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8xe2 Nc3xe2 g7g6
     22	03:52	  14.692.426	64.923	-0.59	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8xe2 Nc3xe2 Ne1c2
   1/8/2008 7:42:45 PM, Time for this analysis: 00:06:25, Rated time: 19:46
Even more amazing, look at this (we are at 27. about to move Kg2):
[d]2r2bk1/5ppp/p7/1p1P3Q/1Pp2P2/P1N3P1/1BP4P/4rn1K w - - bm Kg2;
If you look at the pv, Rybka does not see the devastating reply f5! that is coming at move 29:

Code: Select all

    
    Searching move: Kh1-g2
    Best move (Rybkav2.3.2a.w32): Kh1-g2
    identical moves! Found in: 00:00
      5	00:00	       1.591	95.834	-0.43	Kh1g2 Nf1e3+ Kg2f2
      6	00:00	       2.807	89.824	-0.49	Kh1g2 Nf1e3+ Kg2f2 Ne3xc2
      7	00:00	       7.620	70.935	-0.19	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4
      8	00:00	      10.182	66.409	-0.24	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4 h7h6
      9	00:01	      14.624	59.661	-0.25	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4 h7h6 Bb2c3
     10	00:01	      33.442	60.717	-0.12	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re1f1 Qf3e2 Rf1g1
     11	00:01	      66.326	63.832	-0.37	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e2 Ne3xd5 Bb2d4
     12	00:02	     107.154	63.794	-0.41	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e2 Ne3xd5 Bb2d4 Bf8e7
     13	00:03	     173.644	60.831	-0.21	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e4 Ne3xd5 Bb2d4 Bf8e7 Ne4c3
     14	00:10	     625.785	63.971	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Ne3xc2 Qh5f5 Nc2d4 Qf5d7 Re1e7
     15	00:14	     815.009	62.834	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Bf8d6 Nc3e2 Ne3xc2 Ne2d4 Nc2xd4 Bb2xd4 Re1e4
     16	00:21	   1.352.454	65.505	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Bf8d6 Nc3e2 Ne3xc2 Ne2d4 Nc2xd4 Bb2xd4 Re1e4
     17	01:28	   5.438.147	63.391	-0.73	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Rd8d6 Kh3g2 Nf1e3+ Kg2f2 Ne3xc2 Qh5f3 Rd6h6
     18	01:44	   6.468.552	64.133	-0.67	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Nf1e3 Nc3e2 Ne3xd5 Qh5f3 Be7f6 Bb2xf6 Nd5xf6
     19	02:28	   9.616.749	66.811	-0.75	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Nf1e3 Nc3e2 Ne3xd5 Qh5f3 Be7f6 Bb2xf6 Nd5xf6
     20	03:41	  14.863.965	68.934	-0.78	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Rd8d6 Kh3g2 Nf1e3+ Kg2f2 Ne3xc2 f4f5 Re1e8 Qg5d2 Nc2e3
   1/8/2008 8:06:07 PM, Time for this analysis: 00:06:25, Rated time: 00:00
About this, I got this answer on the Rybka Forum:
Victor Zakharov wrote:Sorry, what trouble Rybka should see?

You put Rybka analysis but but don't say what is wrong with it.
Your beliefs create your reality, so be careful what you wish for.
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Dann Corbit
Posts: 12814
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: Most beautiful computer chess game ever played?

Post by Dann Corbit »

Ovyron wrote:
Dann Corbit wrote:This is really interesting, as it shows some sort of problem with either the search or the eval of Rybka.

Given the position after moving 23. b4 and black has responded Bxg2+, Rybka still does not see the trouble:
[d]2r1rbk1/5ppp/p7/1p1P3q/1Pp2Pn1/P1N3P1/1BPQ2bP/4RR1K w - - bm Qxg2;

Code: Select all

    Searching move: Qd2xg2
    Best move (Rybkav2.3.2a.w32): Qd2xg2
    identical moves! Found in: 00:00
      5	00:00	         494	505.856	-0.41	Qd2xg2 Ng4e3
      6	00:00	       1.050	63.247	-0.45	Qd2xg2 Ng4e3 Qg2f3
      7	00:00	       2.622	83.904	-0.59	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2
      8	00:00	       5.665	73.429	-0.66	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2
      9	00:00	       8.256	76.163	-0.57	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4
     10	00:00	      12.071	71.449	-0.51	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2
     11	00:01	      19.632	61.103	-0.42	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5
     12	00:01	      32.624	59.232	-0.42	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5 Kh1g1
     13	00:01	      57.046	58.356	-0.43	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2d4 Rf2d2 Nd4f5 Kh1g1 Bf8d6
     14	00:02	     112.365	57.502	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     15	00:04	     187.649	56.135	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     16	00:06	     316.024	54.783	-0.33	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     17	00:11	     560.709	53.876	-0.29	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     18	00:24	   1.262.156	53.883	-0.28	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 Ne1d3
     19	00:38	   2.001.084	54.663	-0.33	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 f7f5
     20	01:13	   3.948.433	55.659	-0.37	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8e7 Kh1g1 f7f5
     21	02:13	   7.859.223	60.637	-0.54	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8xe2 Nc3xe2 g7g6
     22	03:52	  14.692.426	64.923	-0.59	Qd2xg2 Ng4e3 Qg2f3 Qh5xf3+ Rf1xf3 Ne3xc2 Re1xe8 Rc8xe8 Rf3f2 Nc2e1 Rf2e2 Re8xe2 Nc3xe2 Ne1c2
   1/8/2008 7:42:45 PM, Time for this analysis: 00:06:25, Rated time: 19:46
Even more amazing, look at this (we are at 27. about to move Kg2):
[d]2r2bk1/5ppp/p7/1p1P3Q/1Pp2P2/P1N3P1/1BP4P/4rn1K w - - bm Kg2;
If you look at the pv, Rybka does not see the devastating reply f5! that is coming at move 29:

Code: Select all

    
    Searching move: Kh1-g2
    Best move (Rybkav2.3.2a.w32): Kh1-g2
    identical moves! Found in: 00:00
      5	00:00	       1.591	95.834	-0.43	Kh1g2 Nf1e3+ Kg2f2
      6	00:00	       2.807	89.824	-0.49	Kh1g2 Nf1e3+ Kg2f2 Ne3xc2
      7	00:00	       7.620	70.935	-0.19	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4
      8	00:00	      10.182	66.409	-0.24	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4 h7h6
      9	00:01	      14.624	59.661	-0.25	Kh1g2 Nf1e3+ Kg2h3 Rc8d8 Nc3e4 h7h6 Bb2c3
     10	00:01	      33.442	60.717	-0.12	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re1f1 Qf3e2 Rf1g1
     11	00:01	      66.326	63.832	-0.37	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e2 Ne3xd5 Bb2d4
     12	00:02	     107.154	63.794	-0.41	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e2 Ne3xd5 Bb2d4 Bf8e7
     13	00:03	     173.644	60.831	-0.21	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5f3 Re8d8 Nc3e4 Ne3xd5 Bb2d4 Bf8e7 Ne4c3
     14	00:10	     625.785	63.971	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Ne3xc2 Qh5f5 Nc2d4 Qf5d7 Re1e7
     15	00:14	     815.009	62.834	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Bf8d6 Nc3e2 Ne3xc2 Ne2d4 Nc2xd4 Bb2xd4 Re1e4
     16	00:21	   1.352.454	65.505	-0.58	Kh1g2 Nf1e3+ Kg2h3 Rc8e8 Qh5g5 h7h6 Qg5h5 Bf8d6 Nc3e2 Ne3xc2 Ne2d4 Nc2xd4 Bb2xd4 Re1e4
     17	01:28	   5.438.147	63.391	-0.73	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Rd8d6 Kh3g2 Nf1e3+ Kg2f2 Ne3xc2 Qh5f3 Rd6h6
     18	01:44	   6.468.552	64.133	-0.67	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Nf1e3 Nc3e2 Ne3xd5 Qh5f3 Be7f6 Bb2xf6 Nd5xf6
     19	02:28	   9.616.749	66.811	-0.75	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Bf8e7 Qg5h5 Nf1e3 Nc3e2 Ne3xd5 Qh5f3 Be7f6 Bb2xf6 Nd5xf6
     20	03:41	  14.863.965	68.934	-0.78	Kh1g2 Rc8e8 Kg2h3 Re8d8 Qh5g5 Rd8d6 Kh3g2 Nf1e3+ Kg2f2 Ne3xc2 f4f5 Re1e8 Qg5d2 Nc2e3
   1/8/2008 8:06:07 PM, Time for this analysis: 00:06:25, Rated time: 00:00
About this, I got this answer on the Rybka Forum:
Victor Zakharov wrote:Sorry, what trouble Rybka should see?

You put Rybka analysis but but don't say what is wrong with it.
Here is the game continuation and the analysis {notice that the moves are as predicted above until f5!}:

[d]2r2bk1/5ppp/p7/1p1P3Q/1Pp2P2/P1N3P1/1BP3KP/4rn2 b - - bm Rce8;
[d]4rbk1/5ppp/p7/1p1P3Q/1Pp2P2/P1N3P1/1BP3KP/4rn2 w - - bm Qf3;
[d]4rbk1/5ppp/p7/1p1P4/1Pp2P2/P1N2QP1/1BP3KP/4rn2 b - - bm Ne3+;
[d]4rbk1/5ppp/p7/1p1P4/1Pp2P2/P1N1nQP1/1BP3KP/4r3 w - - bm Kh3;

Code: Select all

4) Kh3;                 
    Searching move: Kg2-h3
    Best move (Rybkav2.3.2a.w32): Kg2-h3
    identical moves! Found in: 00:00
      5	00:00	       1.213	73.065	+0.07	Kg2h3 Re1f1
      6	00:00	       3.721	59.536	-0.25	Kg2h3 Re8d8 g3g4
      7	00:00	       4.868	63.099	-0.30	Kg2h3 Re8d8 g3g4 Ne3xc2
      8	00:00	      10.751	63.635	-0.37	Kg2h3 Re8d8 Nc3e2 Ne3xd5 Bb2d4
      9	00:01	      16.255	62.341	-0.41	Kg2h3 Re8d8 Nc3e2 Ne3xd5 Bb2d4 Bf8e7
     10	00:01	      34.626	64.702	-0.32	Kg2h3 Re8d8 Nc3e4 Ne3xd5 Bb2d4 f7f5 Ne4g5
     11	00:01	      45.605	62.183	-0.32	Kg2h3 Re8d8 Nc3e4 Ne3xd5 Bb2d4 f7f5 Ne4g5 h7h6
     12	00:01	      72.444	61.613	-0.30	Kg2h3 Re8d8 Nc3e4 Ne3xd5 Bb2d4 f7f5 Ne4g5 h7h6 Qf3f2
     13	00:14	     875.843	63.629	-1.15	Kg2h3 f7f5 Kh3h4 Ne3xc2 Kh4h3 Re1e3 Qf3h5 Nc2d4 Qh5d1 Re3d3
     14	00:16	     957.349	63.628	-1.16	Kg2h3 f7f5 Kh3h4 Ne3xc2 Kh4h3 Re1e3 Qf3h5 Nc2d4 Qh5g5 Bf8e7 Qg5h5
     15	00:25	   1.541.383	62.896	-1.39	Kg2h3 f7f5 Kh3h4 Ne3xc2 d5d6 Bf8xd6 Qf3d5+ Re1e6 Bb2c1 g7g6 g3g4 Bd6e7+ g4g5 Be7f8
     16	00:45	   2.768.743	63.112	-1.94	Kg2h3 f7f5 a3a4 Re1f1 Qf3e2 Rf1h1 Qe2f3 Ne3g4 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1 a4xb5 a6xb5
     17	00:47	   2.879.555	63.091	-1.87	Kg2h3 f7f5 a3a4 Re1f1 Qf3e2 Rf1h1 Qe2f3 Ne3g4 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1 a4xb5 a6xb5
     18	00:57	   3.620.436	65.199	-2.19	Kg2h3 f7f5 Qf3f2 Ne3g4 Qf2f3 Re1h1 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1 Kg2xh1 Bf8e7 Kh1g2 Be7f6
     19	01:14	   4.717.431	65.735	-2.04	Kg2h3 f7f5 a3a4 Re1f1 Qf3h5 g7g6 Qh5e2 Rf1h1 Qe2f3 Ne3g4 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1
     20	01:49	   7.064.014	66.783	-2.22	Kg2h3 f7f5 a3a4 Re1f1 Qf3h5 g7g6 Qh5e2 Rf1h1 Qe2f3 Ne3g4 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1
     21	02:59	  12.059.015	69.202	-2.48	Kg2h3 f7f5 a3a4 Re1f1 Qf3h5 g7g6 Qh5e2 Rf1h1 Qe2f3 Ne3g4 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1
     22	04:21	  16.957.489	66.570	-2.41	Kg2h3 f7f5 a3a4 Re1f1 Qf3h5 g7g6 Qh5e2 Rf1h1 Qe2f3 Ne3g4 Qf3xh1 Ng4f2+ Kh3g2 Nf2xh1
   1/8/2008 8:12:36 PM, Time for this analysis: 00:06:25, Rated time: 06:25
[code]
[D]4rbk1/5ppp/p7/1p1P4/1Pp2P2/P1N1nQPK/1BP4P/4r3 b - - bm f5;
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