16.f3 - Draw? Deep Blue vs Fritz (1995)

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yurikvelo
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16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by yurikvelo »

Deep Blue (Computer) vs Fritz (Computer) · 0-1 (1995)

multiPV:

16.Nc4? - Mated in 34
16.f3 - Draw?

[pgn][Event "Hong Kong WCCC"]
[Site "Hong Kong WCCC"]
[Date "1995.??.??"]
[Round "5"]
[White "Deep Blue (Computer)"]
[Black "Fritz (Computer)"]
[Result "0-1"]
[BlackElo "2400"]
[ECO "B33"]
[Opening "Sicilian"]
[Variation "Pelikan, Sveshnikov, 11.Bd3 Be6"]
[WhiteElo "2400"]
[TimeControl "60+1"]
[Termination "normal"]
[PlyCount "78"]
[WhiteType "human"]
[BlackType "human"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Bg5 a6
8. Na3 b5 9. Bxf6 gxf6 10. Nd5 f5 11. Bd3 Be6 12. Qh5 f4 13. O-O Rg8 14.
Kh1 Rg6 15. Qd1 Rc8 16. c4 (16. f3 Qh4 17. Qe1 Qh5 18. Rf2 Rh6 19. Qg1 Bxd5
20. exd5 Nb4 21. Rd1 Be7 22. Rfd2 Nxd5 23. Bxb5+ axb5 24. Rxd5 b4 25. Nb5
Rxc2 26. a4 bxa3 27. bxa3 Kf8 28. a4 Bh4 29. Rxd6 Rxd6 30. Nxd6 Bf2 31. Qf1
Qg6 32. h3 Bd4 33. Ne4 Ra2 34. a5 Kg7 35. Kh2 Kh6 36. Nd2 Rxa5 37. Nb3 Ra4
38. Nxd4 Rxd4 39. Re1 Qg3+ 40. Kg1 f6 41. Re2 Rb4 42. Kh1 Qg6 43. Qf2 Rb1+
44. Re1 Rxe1+ 45. Qxe1) 16. .. Qh4 17. g3 Qh3 18. Qd2 (18. Qf3 Nd4 19. Qg2
Qh6 20. Nc2 Bh3 21. Nxd4 Bxg2+ 22. Kxg2 exd4 23. cxb5 axb5 24. Bxb5+ Kd8
25. Rad1 Bg7 26. Bd3 Be5 27. a3 Qh5 28. Nxf4 Bxf4 29. e5 dxe5 30. Rde1 Rh6
31. h4 f5 32. Be2 Qf7 33. b4 d3 34. Bd1 Qd5+ 35. Bf3 (35. Kh3 Bd2) 35. ..
e4 36. Bd1 Bd2 37. b5 (37. a4 37. .. Bxe1) (37. Kh2 Bxe1) 37. .. Bxe1 38.
Rxe1 Qa2 39. Ba4 Qxa3) 18. .. f3 (18. .. Nd4 19. f3 fxg3 20. Qg2 Qh4 21.
Nf6+ Qxf6 22. Nc2 Nxc2 23. Bxc2 Qf4 24. Bd1 Rh6 25. Rf2 Rxh2+ 26. Qxh2 gxh2
27. Be2 bxc4 28. Rxh2 Rb8 29. b3 c3 30. b4 c2 31. Kg2 Rxb4) 19. Rg1 Rh6 20.
Qxh6 Qxh6 21. cxb5 Bxd5 22. exd5 Nb4 23. Bf5 Rc5 24. bxa6 Nxa6 25. Nc2 Qd2
26. Ne1 Rxd5 27. Nxf3 Qxf2 28. Be4 Ra5 29. Rg2 Qe3 30. Re1 Qh6 31. Bc6+ Kd8
32. a3 f5 33. Rc2 Rc5 34. Rxc5 Nxc5 35. Rf1 Be7 36. a4 f4 37. gxf4 Qxf4 38.
Rg1 Nxa4 39. b4 Qxb4 0-1
[/pgn]
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Uri Blass
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by Uri Blass »

Deep blue prototype played 16.c4 so why 16.Nc4 in the comments?
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yurikvelo
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by yurikvelo »

Uri Blass wrote:Deep blue prototype played 16.c4 so why 16.Nc4 in the comments?
Sorry, typo. phpBB forbid editing posts in this forum.

16.c4? - Mated in 34
16.f3 - Draw?
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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by kgburcham »

yurikvelo wrote:Deep Blue (Computer) vs Fritz (Computer) · 0-1 (1995)

multiPV:

16.c4? - Mated in 34
16.f3 - Draw?
[d] 2rqkb2/5p1p/p1npb1r1/1p1Np3/2P1Pp2/N2B4/PP3PPP/R2Q1R1K b - -

Engine: Houdini 4 Pro x64 (8192 MB)
by Robert Houdart
15/37 0:00 -3.12++ 16...Qh4 (3.299.919) 12267
15/56 0:01 -5.18 16...Qh4 17.g3 Qh3 18.Qf3 Bg4 19.Qg2 Qh5 (24.454.232) 17100
16/56 0:01 -5.27 16...Qh4 17.Be2 Rh6 18.Bh5 Bxd5 19.exd5 Rxh5 (27.383.106) 16944
17/56 0:01 -5.05-- 16...Qh4 17.Be2 (28.317.071) 16835
17/56 0:01 -5.13 16...Qh4 17.Be2 Rh6 18.Bh5 Bxd5 19.exd5 Rxh5 (30.932.100) 16875
18/60 0:02 -5.34++ 16...Qh4 (36.137.695) 17233
18/60 0:02 -5.76++ 16...Qh4 (49.620.754) 17740


todays programs instantly see c4 is a 5 point blunder. It would seem this move is the result of a bug, it was found and repaired. Programs don't blunder but 2800 GM blunder several times in every tournament.

[Event "IBM Man-Machine, New York USA"]
[Site "New York, NY USA"]
[Date "1997.05.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Deep Blue (Computer)"]
[Black "Garry Kasparov"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Ng5 Ngf6 6.Bd3 e6
7.N1f3 h6 8.Nxe6 Qe7 9.O-O fxe6 10.Bg6+ Kd8 11.Bf4 b5 12.a4
Bb7 13.Re1 Nd5 14.Bg3 Kc8 15.axb5 cxb5 16.Qd3 Bc6 17.Bf5 exf5
18.Rxe7 Bxe7 19.c4 1-0
no chess program was born totally from one mind. all chess programs have many ideas from many minds.
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yurikvelo
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by yurikvelo »

kgburcham wrote: todays programs instantly see c4 is a 5 point blunder. It would seem this move is the result of a bug, it was found and repaired. Programs don't blunder but 2800 GM blunder several times in every tournament
16.c4? - Mate in 34 moves is not my question.

Question is can black win after 16.f3?
After 45.Qe1 - stockfish show evaluation -0.98 from D=1 to D=67.
Neither progress, nor eval drop.
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zullil
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by zullil »

yurikvelo wrote:
kgburcham wrote: todays programs instantly see c4 is a 5 point blunder. It would seem this move is the result of a bug, it was found and repaired. Programs don't blunder but 2800 GM blunder several times in every tournament
16.c4? - Mate in 34 moves is not my question.

Question is can black win after 16.f3?
After 45.Qe1 - stockfish show evaluation -0.98 from D=1 to D=67.
Neither progress, nor eval drop.
Well, after 1 min of thought. What if Black tries a plan based on Bh6-g5-h4-g3 with Rh6 after Bh4? I doubt White can hold this position. But that's only a minute of thinking.

Do top engines find Bh6 after f3?

Edit: Stockfish seems to prefer Rh6 immediately after f3:

Code: Select all

info depth 34 seldepth 56 multipv 1 score cp 76 lowerbound nodes 14650370915 nps 22991324 hashfull 999 tbhits 0 time 637213 pv g6h6
info depth 34 currmove g6h6 currmovenumber 1
info depth 34 seldepth 56 multipv 1 score cp 96 lowerbound nodes 14937531585 nps 22964919 hashfull 999 tbhits 0 time 650450 pv g6h6
info depth 34 currmove g6h6 currmovenumber 1
info depth 34 seldepth 56 multipv 1 score cp 124 lowerbound nodes 16671047726 nps 23062112 hashfull 999 tbhits 0 time 722876 pv g6h6

Code: Select all

info depth 34 seldepth 63 multipv 1 score cp 129 nodes 20862098472 nps 23239654 hashfull 999 tbhits 0 time 897694 pv g6h6 d1e1 d8g5 e1f2 f8e7 d5e7 e8e7 c2c3 c8g8 f1d1 g5h5 f2g1 h6g6 d1d2 e6h3 d3f1 h5f3 a3c2 h7h5 c2e1 f3e4 g1f2 f4f3 f2f3 e4f3 e1f3 h3e6 a2a4 c6a5 d2f2 a5b3 a1a3 e5e4 f3h4 g6f6 f2f6 e7f6 a4b5 b3d2 a3a1 f6g5 b5a6 g5h4 f1b5 d2b3 a1a3
info depth 35 currmove g6h6 currmovenumber 1
info depth 35 seldepth 63 multipv 1 score cp 136 lowerbound nodes 21971675045 nps 23293882 hashfull 999 tbhits 0 time 943238 pv g6h6
info depth 35 currmove g6h6 currmovenumber 1
info depth 35 seldepth 63 multipv 1 score cp 143 lowerbound nodes 23081818258 nps 23365711 hashfull 999 tbhits 0 time 987850 pv g6h6
info depth 35 currmove g6h6 currmovenumber 1
info depth 35 seldepth 63 multipv 1 score cp 153 lowerbound nodes 26755901094 nps 23505222 hashfull 999 tbhits 0 time 1138296 pv g6h6
Last edited by zullil on Fri Apr 15, 2016 3:51 pm, edited 1 time in total.
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yurikvelo
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by yurikvelo »

Up to 36 both SF & Komodo at D>30 per move give the same pretty forced line

16. f3 Qh4 17. Qe1 Qh5 18. Rf2 Rh6 19. Qg1 Bxd5 20. exd5 Nb4
21. Rd1 Be7 22. Rfd2 Nxd5 23. Bxb5+ axb5 24. Rxd5 b4 25. Nb5 Rxc2
26. a4 bxa3 27. bxa3 Kf8 28. a4 Bh4 29. Rxd6 Rxd6 30. Nxd6 Bf2
31. Qf1 Qg6 32. h3 Bd4 33. Ne4 Ra2 34. a5 Kg7 35. Kh2 Kh6 36. Nd2

Than they keep eval close to -1 but with no progress
Last edited by yurikvelo on Fri Apr 15, 2016 3:55 pm, edited 1 time in total.
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zullil
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by zullil »

Line that long is meaningless. Looks like first move isn't even best!
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Uri Blass
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Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by Uri Blass »

I think that it was not a bug and deep blue prototype did not see deep enough.


Probably it only saw
16.c4 Qh4 17.g3 Qh3 18.Rg1 Qxh2+ 19.Kxh2 Rh6+ 20.Kg2 Bh3+ 21.Kh2 Bf1+ 22.Qh5 when the fact that 22...Rxh5 is mate was too deep for it.

Here is houdini3's analysis after 16.c4 when I told it to search only for mate in 6 so 22...Rxh5 mate is too deep for it.

FEN: 2rqkb2/5p1p/p1npb1r1/1p1Np3/2P1Pp2/N2B4/PP3PPP/R2Q1R1K b - c3 0 16

Houdini_3_x64:
4/13 00:00 4k 1,495k -0.12 16. ... Nd4 17.cxb5 Qg5 18.g3
4/13 00:00 8k 917k +0.23 16. ... Qg5 17.g3 Rh6 18.cxb5 axb5 19.gxf4
5/13 00:00 10k 950k +0.23 16. ... Qg5 17.g3 Rh6 18.cxb5 axb5 19.gxf4
6/13 00:00 22k 945k +0.10 16. ... Qg5 17.g3 Rh6 18.cxb5 Nd4 19.Qa4 Bxd5 20.exd5
7/13+ 00:00 24k 978k +0.18 16. ... Qg5
7/13+ 00:00 25k 978k +0.34 16. ... Qg5
7/13 00:00 32k 999k +0.11 16. ... Qg5 17.g3 Rh6 18.cxb5 fxg3 19.fxg3 Nd4 20.Kg1 Bxd5 21.exd5 Qe3+ 22.Rf2
8/13 00:00 41k 994k +0.11 16. ... Qg5 17.g3 Rh6 18.cxb5 fxg3 19.fxg3 Nd4 20.Kg1 Bxd5 21.exd5 Qe3+ 22.Rf2
8/13+ 00:00 46k 1,051k +0.19 16. ... Qh4
8/13+ 00:00 49k 1,097k +0.35 16. ... Qh4
8/13 00:00 75k 1,370k +0.10 16. ... Qh4 17.Be2 Bxd5 18.exd5 Nd4 19.cxb5 Qg5 20.g3 fxg3 21.hxg3
8/13 00:00 75k 1,370k +0.11 16. ... Qg5 17.g3 Rh6 18.cxb5 fxg3 19.fxg3 Nd4 20.Kg1 Bxd5 21.exd5 Qe3+ 22.Rf2
9/13+ 00:00 134k 1,740k +0.19 16. ... Qh4
9/13+ 00:00 136k 1,623k +0.35 16. ... Qh4
9/13 00:00 150k 1,558k +0.48 16. ... Qh4 17.cxb5 Rh6 18.Nf6+ Kd8 19.h3 Bxh3 20.Kg1 Be6 21.f3 Qh2+ 22.Kf2
10/13+ 00:00 184k 1,602k +0.56 16. ... Qh4
10/13+ 00:00 193k 1,546k +0.74 16. ... Qh4
10/13+ 00:00 204k 1,497k +1.21 16. ... Qh4
10/13 00:00 275k 1,664k +1.22 16. ... Qh4 17.g3 Qh3 18.Rg1 Qxh2+ 19.Kxh2 Rh6+ 20.Qh5 Rxh5+ 21.Kg2 fxg3 22.Kxg3
11/13- 00:00 292k 1,688k +1.11 16. ... Qh4 17.g3
11/13- 00:00 317k 1,749k +0.90 16. ... Qh4 17.g3
11/13 00:00 341k 1,756k +0.51 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.cxb5 Bxd5 21.exd5 Nd4 22.fxg3
12/13- 00:00 388k 1,821k +0.43 16. ... Qh4 17.g3
12/13- 00:00 522k 2,014k +0.28 16. ... Qh4 17.g3
12/13 00:00 661k 2,210k +0.25 16. ... Qh4 17.g3 fxg3 18.fxg3 Rxg3 19.Qe1 Rh3 20.Qxh4 Rxh4 21.cxb5 axb5 22.Nxb5
13/13- 00:00 775k 2,361k +0.17 16. ... Qh4 17.g3
13/13- 00:00 1,091k 2,666k +0.01 16. ... Qh4 17.g3
13/13 00:00 1,488k 2,999k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
14/13 00:00 1,704k 3,109k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
15/13 00:00 2,431k 3,482k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
16/13 00:00 3,446k 3,693k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
17/13 00:01 4,868k 3,931k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
18/13 00:01 7,508k 4,339k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
19/13 00:02 10,870k 4,563k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
20/13 00:03 17,625k 4,845k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
21/13 00:05 25,800k 5,086k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
22/13 00:07 37,669k 5,280k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
23/13 00:09 52,927k 5,471k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
24/13 00:13 74,647k 5,643k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
25/13 00:17 103,336k 5,803k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
26/13 00:23 138,363k 5,875k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
27/13 00:30 185,230k 5,979k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
28/13 00:41 250,519k 6,044k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
29/13 00:54 335,822k 6,119k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
30/13 01:11 443,767k 6,199k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6
31/13 01:34 587,238k 6,237k 0.00 16. ... Qh4 17.g3 Qh3 18.Rg1 Rh6 19.Rg2 fxg3 20.fxg3 bxc4 21.Bxc4 Bg7 22.Bxa6

Here is the analysis when I allow it to search for mate in 7 so it see that 17.Rg1 is bad

FEN: 2rqkb2/5p1p/p1npb1r1/1p1Np3/2P1Pp2/N2B4/PP3PPP/R2Q1R1K b - c3 0 16

Houdini_3_x64:
4/15 00:00 5k 1,506k -0.12 16. ... Nd4 17.cxb5 Qg5 18.g3
4/15 00:00 8k 1,205k +0.23 16. ... Qg5 17.g3 Rh6 18.cxb5 axb5 19.gxf4
5/15 00:00 10k 1,212k +0.23 16. ... Qg5 17.g3 Rh6 18.cxb5 axb5 19.gxf4
6/15 00:00 17k 1,153k +0.27 16. ... Qg5 17.Rg1 Qh4 18.Rf1 Bxd5 19.exd5 Rh6
7/15+ 00:00 21k 1,223k +0.35 16. ... Qg5
7/15 00:00 36k 1,241k +0.10 16. ... Qg5 17.g3 Rh6 18.cxb5 axb5 19.Nxb5 fxg3 20.fxg3 Qxg3 21.Nbc7+ Kd7 22.Nxe6 fxe6 23.Rf7+
8/15+ 00:00 42k 1,267k +0.18 16. ... Qg5
8/15+ 00:00 43k 1,295k +0.34 16. ... Qg5
8/15 00:00 76k 1,405k +0.05 16. ... Qg5 17.g3 Ne7 18.Kg1 Bg4 19.Be2 Bh3 20.Bh5 Bxf1 21.Bxg6 hxg6 22.Kxf1 Nxd5 23.Qxd5
8/15 00:00 104k 1,605k +0.63 16. ... Qh4 17.b4 Bxd5 18.exd5 Rh6 19.h3 Nxb4 20.Rb1 Nxd3 21.Qxd3
9/15+ 00:00 118k 1,655k +0.73 16. ... Qh4
9/15+ 00:00 124k 1,677k +0.94 16. ... Qh4
9/15+ 00:00 148k 1,808k +1.43 16. ... Qh4
9/15 00:00 177k 1,903k +1.35 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Bxf1 fxg3 23.hxg3
10/15- 00:00 191k 1,928k +1.24 16. ... Qh4 17.g3
10/15 00:00 229k 1,911k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
11/15 00:00 271k 2,049k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
12/15 00:00 353k 2,246k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
13/15 00:00 555k 2,580k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
14/15 00:00 853k 3,013k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
15/15 00:00 1,356k 3,236k +1.18 16. ... Qh4 17.g3 Qh3 18.Qf3 Bg4 19.Qg2 Qh5 20.Nxb5 axb5 21.cxb5 f3 22.Qg1 Nd4 23.b6
16/15 00:00 2,032k 3,590k +1.18 16. ... Qh4 17.g3 Qh3 18.Qf3 Bg4 19.Qg2 Qh5 20.Nxb5 axb5 21.cxb5 f3 22.Qg1 Nd4 23.b6
17/15 00:00 3,241k 3,904k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
18/15 00:01 6,940k 4,364k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
19/15 00:02 10,345k 4,575k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
20/15 00:03 16,968k 4,812k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
21/15 00:05 25,152k 4,979k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
22/15 00:07 37,796k 5,130k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
23/15 00:10 55,934k 5,273k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
24/15 00:15 82,639k 5,408k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
25/15 00:22 123,809k 5,479k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
26/15 00:31 175,981k 5,536k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
27/15 00:45 255,828k 5,604k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
28/15 01:05 369,933k 5,683k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
29/15 01:29 521,238k 5,793k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
30/15 02:02 713,135k 5,822k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
31/15 02:48 988,808k 5,882k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3
32/15 03:47 1,350,410k 5,948k +1.16 16. ... Qh4 17.g3 Qh3 18.Qf3 Rh6 19.Qg2 Qxg2+ 20.Kxg2 Bh3+ 21.Kg1 Bxf1 22.Rxf1 fxg3 23.fxg3



Note that when I looked at the game I thought that maybe deep blue did not extend the line 16...Qh4 17.g3 Qh3 18.Rg1 Qxh2+ because black wasted a tempo by the moves 16...Qh4 17...Qh3 18...Qxh2+ and maybe at that time it had a rule not to extend lines when you waste a tempo.

Of course deep blue did not blunder by 18.Rg1 because at that time the line was not too deep for it.
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: 16.f3 - Draw? Deep Blue vs Fritz (1995)

Post by zullil »

zullil wrote:
yurikvelo wrote:
kgburcham wrote: todays programs instantly see c4 is a 5 point blunder. It would seem this move is the result of a bug, it was found and repaired. Programs don't blunder but 2800 GM blunder several times in every tournament
16.c4? - Mate in 34 moves is not my question.

Question is can black win after 16.f3?
After 45.Qe1 - stockfish show evaluation -0.98 from D=1 to D=67.
Neither progress, nor eval drop.
Edit: Stockfish seems to prefer Rh6 immediately after f3:

Code: Select all

info depth 34 seldepth 56 multipv 1 score cp 76 lowerbound nodes 14650370915 nps 22991324 hashfull 999 tbhits 0 time 637213 pv g6h6
info depth 34 currmove g6h6 currmovenumber 1
info depth 34 seldepth 56 multipv 1 score cp 96 lowerbound nodes 14937531585 nps 22964919 hashfull 999 tbhits 0 time 650450 pv g6h6
info depth 34 currmove g6h6 currmovenumber 1
info depth 34 seldepth 56 multipv 1 score cp 124 lowerbound nodes 16671047726 nps 23062112 hashfull 999 tbhits 0 time 722876 pv g6h6

Code: Select all

info depth 34 seldepth 63 multipv 1 score cp 129 nodes 20862098472 nps 23239654 hashfull 999 tbhits 0 time 897694 pv g6h6 d1e1 d8g5 e1f2 f8e7 d5e7 e8e7 c2c3 c8g8 f1d1 g5h5 f2g1 h6g6 d1d2 e6h3 d3f1 h5f3 a3c2 h7h5 c2e1 f3e4 g1f2 f4f3 f2f3 e4f3 e1f3 h3e6 a2a4 c6a5 d2f2 a5b3 a1a3 e5e4 f3h4 g6f6 f2f6 e7f6 a4b5 b3d2 a3a1 f6g5 b5a6 g5h4 f1b5 d2b3 a1a3
info depth 35 currmove g6h6 currmovenumber 1
info depth 35 seldepth 63 multipv 1 score cp 136 lowerbound nodes 21971675045 nps 23293882 hashfull 999 tbhits 0 time 943238 pv g6h6
info depth 35 currmove g6h6 currmovenumber 1
info depth 35 seldepth 63 multipv 1 score cp 143 lowerbound nodes 23081818258 nps 23365711 hashfull 999 tbhits 0 time 987850 pv g6h6
info depth 35 currmove g6h6 currmovenumber 1
info depth 35 seldepth 63 multipv 1 score cp 153 lowerbound nodes 26755901094 nps 23505222 hashfull 999 tbhits 0 time 1138296 pv g6h6

Code: Select all

info depth 43 seldepth 73 multipv 1 score cp 164 nodes 229713367161 nps 25123435 hashfull 999 tbhits 0 time 9143390 pv g6h6 d1e1 d8g5 e1f2 f8e7 d5e7 e8e7 c2c3 c8g8 f1d1 e6d7 a1c1 g5h5 f2g1 h6g6 d1d2 d7h3 d3f1 h5f3 a3c2 e7f8 c2e1 f3e4 g1f2 e4e3 f2e3 f4e3 d2e2 h3e6 e2e3 f8e7 c1a1 f7f5 a2a4 f5f4 e3f3 e6c4 a4b5 a6b5 h1g1 e7e6 f3h3 g8g7 a1a6 c6e7 a6a7 e5e4 h3h4 e6e5 f1c4 b5c4 g1f2 d6d5 h4h5 e7f5 a7g7
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