test position from a correspondence game

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jdart
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test position from a correspondence game

Post by jdart »

[D] r1b2nk1/1p2r3/p2p2pb/P1pPnp1p/4PN1P/R1N2PB1/BP4P1/1R1K4 w - - 0 24

White played b4 and went on to win. Stockfish 5 selected b4 quite rapidly, but not Houdini 4 or Komodo 8.

[pgn]
[Event "WC36/sf01"]
[Site "ICCF"]
[Date "2012.06.10"]
[Round "?"]
[White "Roubaud, David"]
[Black "Tiemann, Hagen"]
[Result "1-0"]
[WhiteElo "2571"]
[BlackElo "2430"]
[PlyCount "91"]
[EventDate "2012.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5 7. d5 e6 8. Qd2 h6
9. Be3 exd5 10. cxd5 a6 11. a4 Nh7 12. a5 Re8 13. Ra3 Qe7 14. Bc4 Nd7 15. Nge2
Ne5 16. Ba2 Qh4+ 17. Bf2 Qg5 18. Bg3 Qxd2+ 19. Kxd2 f5 20. Nf4 Nf8 21. Rb1 h5
22. h4 Bh6 23. Kd1 Re7 24. b4 c4 25. b5 fxe4 26. Nxe4 Bf5 27. bxa6 bxa6 28. Re3
Nfd7 29. Rb7 Bxe4 30. Rxe4 Ree8 31. Ne6 Reb8 32. Rxd7 Nxd7 33. Bxd6 Rb5 34.
Bxc4 Rxa5 35. Bc7 Ra1+ 36. Ke2 Re8 37. d6 Kh8 38. Bd5 Rc1 39. Bb3 Ra1 40. g3
Ra3 41. Bd5 Nf6 42. Ng5 Rf8 43. Re5 Nxd5 44. Rxd5 Ra2+ 45. Kd3 Ra3+ 46. Kc4 1-0
[/pgn]
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: test position from a correspondence game

Post by zullil »

Yes, the latest SF-dev finds b4 quickly:

Code: Select all

info depth 28 seldepth 42 score cp 54 lowerbound nodes 230698109 nps 9905882 time 23289 multipv 1 pv b2b4 e7f7 f4e6 c5c4 g3e5 d6e5 a2c4 c8e6 d5e6 f7c7 c4d5 c7e7 e4f5 g6f5 b4b5 a6b5 b1b5 f8e6
After more time:

Code: Select all

info depth 47 seldepth 70 score cp 72 nodes 103039502657 nps 21204650 time 4859288 multipv 1 pv b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 a8a6 f4e2 f5e4 f3e4 h6g7 e2d4 e7c7 d1c2 g7f6 b1b6 c7c5 g3e5 f6e5 d4c6 a6b6 a5b6 e5f6 c6a5 c5b5 a5c4 f8d7 c4d6 b5b2 c2d1 b2b6 d6c4 b6a6 a3a6 b7a6 d1e2 g8f8 e2e3 d7e5 c4a5 f6h4 a2c4 f8f7 c4a6 h4d8 e3d4 f7f6 a5b7 d8b6 d4c3 e5g4 a6b5 f6e5 d5d6 g4e3 b5e8 e3g2 e8g6
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Eelco de Groot
Posts: 4567
Joined: Sun Mar 12, 2006 2:40 am
Full name:   

Re: test position from a correspondence game

Post by Eelco de Groot »

zullil wrote:Yes, the latest SF-dev finds b4 quickly:
Rainbow Serpent, eval from august Stockfish, finds it at depth 23 :)

r1b2nk1/1p2r3/p2p2pb/P1pPnp1p/4PN1P/R1N2PB1/BP4P1/1R1K4 w - -

Engine: Sf20140810_022 MOD MP (Q6700, 4 threads, 512 MB)
by Tord Romstad, Marco Costalba and Joona Kiiski

18/21 0:01 +0.19 24.Ke2 fxe4 25.Nxe4 Bf5 26.Re3 Nfd7
27.Kf1 Kg7 28.Rbe1 Bxf4 29.Bxf4 Bxe4
30.Rxe4 Rf7 31.b4 Nd3 32.Bxd6 Nxe1
33.Rxe1 (2.967.652) 2671

19/22 0:02 +0.41 24.Nfe2 Nfd7 25.b4 c4 26.b5 Re8
27.bxa6 bxa6 28.exf5 gxf5 29.Kc2 Re7
30.Rb4 Be3 31.Ne4 fxe4 32.Rxe3 exf3
33.gxf3 (7.778.796) 2632
.
.
.
.
22/27 0:07 +0.44 24.Nfe2 Nfd7 25.b4 cxb4 26.Rxb4 Nc5
27.Bb1 Rf7 28.exf5 Bxf5 29.Ne4 Nxe4
30.Bxe4 Bxe4 31.Rxe4 Bg7 32.f4 Ng4
33.Re6 Bf6 34.Rxd6 Re8 (19.501.724) 2632

23/27 0:08 +0.37-- 24.Nfe2 Nfd7 25.b4 cxb4 26.Rxb4 Nc5
27.Bb1 Bd7 28.exf5 gxf5 29.Nf4 Bxf4
30.Bxf4 Rg7 31.Bg5 Nf7 (21.839.419) 2639

23/27 0:10 +0.50++ 24.b4 c4 25.Nfe2 fxe4 26.Nxe4 Bf5
27.N2c3 Bg7 28.b5 Nfd7 29.bxa6 bxa6
30.Rb4 (27.320.484) 2638

23/27 0:11 +0.58++ 24.b4 Rf7 25.Nfe2 cxb4 26.Rxb4 Nd3
27.Rb1 f4 28.Kc2 (31.878.502) 2657

23/27 0:15 +0.48 24.b4 c4 25.b5 Rf7 26.bxa6 bxa6
27.Nfe2 Nfd7 28.exf5 gxf5 29.f4 Ng4
30.Kd2 Nc5 31.Rb6 Re7 32.Rxd6 Re3
33.Rxh6 Ne4+ 34.Nxe4 Rxa3 35.Rg6+ (42.399.433) 2689
.
.
.
.
42/52 179:31 +0.64 24.b4 c4 25.b5 fxe4 26.Nxe4 Bf5
27.bxa6 bxa6 28.Rb4 Bxe4 29.fxe4 Rc8
30.Ne6 Nxe6 31.dxe6 Rec7 32.Rc3 Kf8
33.Bxe5 dxe5 34.Ke2 Bg7 35.Rb6 Rc6
36.Rb7 R8c7 37.Rf3+ (32.890.141.888) 3053

43/52 180:28 +0.64 {not a real depth 43, search termination}
24.b4 c4 25.b5 fxe4 26.Nxe4 Bf5
27.bxa6 bxa6 28.Rb4 Bxe4 29.fxe4 Rc8
30.Ne6 Nxe6 31.dxe6 Rec7 32.Rc3 Kf8
33.Bxe5 dxe5 34.Ke2 Bg7 35.Rb6 Rc6
36.Rb7 R8c7 37.Rf3+ (33.088.321.849) 3055

best move: b2-b4 time: 180:29.433 min n/s: 3.055.732 nodes: 33.088.321.849
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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Dr.Wael Deeb
Posts: 9773
Joined: Wed Mar 08, 2006 8:44 pm
Location: Amman,Jordan

Re: test position from a correspondence game

Post by Dr.Wael Deeb »

A beautiful game but it's heavily computerized :wink:
Dr.D
_No one can hit as hard as life.But it ain’t about how hard you can hit.It’s about how hard you can get hit and keep moving forward.How much you can take and keep moving forward….
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Maarten Claessens
Posts: 106
Joined: Mon May 12, 2014 10:08 am
Location: Near Nijmegen

Re: test position from a correspondence game

Post by Maarten Claessens »

The current version of WaDuuttie sees it at depth 19, but needs more time as he can only use one core:

Code: Select all

FEN: r1b2nk1/1p2r3/p2p2pb/P1pPnp1p/4PN1P/R1N2PB1/BP4P1/1R1K4 w - - 0 24 

WaDuuttie:
   1	00:00	         210	210		+0.06	d1c2 f5e4 c3e4
   2	00:00	         424	424		+0.06	d1c2 f5e4 c3e4
   3	00:00	       1,834	1,834		-0.40	d1c2 f5e4 f3e4 c8g4
   4	00:00	       3,573	3,573		-0.32	d1c2 f5e4 f3e4 c8g4 b1f1
   5	00:00	       6,127	612,700		-0.38	d1c2 f5e4 f3e4 c8g4 b1f1 a8e8
   6	00:00	      16,415	1,641,500	-0.14	d1c2!
   6	00:00	      21,537	717,900		-0.12	d1c2 f5e4 c3e4 c8f5 f4d3 f5e4 f3e4 f8d7
   7	00:00	      34,165	1,138,833	-0.24	d1c2?
   7	00:00	      42,326	1,058,150	-0.28	d1c2 f5e4 c3e4 c8f5 f4d3 f8d7 b1e1 a8e8
   8	00:00	      61,377	1,022,950	-0.28	d1c2 f5e4 c3e4 c8f5 f4d3 f8d7 b1d1 f5e4 f3e4 a8e8 d3e5 d7e5 g3e5 e7e5
   9	00:00	     149,461	1,067,578	-0.32	d1c2 f5e4 f3e4 h6g7 b1f1 c8g4 c3d1 a8e8 d1e3 g4d7
  10	00:00	     740,487	1,042,939	-0.22	d1e2 f5e4 c3e4 c8f5 b1f1 h6g7 a3e3 f5e4 e3e4 a8e8 f1e1 f8d7
  11	00:00	     927,728	1,042,391	-0.20	d1e2 f5e4 c3e4 c8f5 b1f1 h6g7 a3e3 f5e4 e3e4 a8e8 f4e6 g7f6 e2f2
  12	00:01	   1,247,125	1,065,918	-0.32	d1e2?
  12	00:01	   1,487,612	1,077,979	-0.30	d1e2 f5e4 c3e4 c8f5 b2b4 c5c4 a3c3 e5g4 c3c4 a8e8 b1f1 f5e4 c4e4 e7e4 f3e4 e8e4 e2d1 e4b4
  13	00:02	   3,107,712	1,102,025	-0.18	f4e2!
  13	00:04	   4,728,716	1,072,271	-0.24	f4e2 c8d7 b2b4 h6e3 g3e5 e7e5 b4c5 e3c5 a3b3 f5e4 f3e4 a8e8 b3b7 d7c8 b7b6 c5b6
  14	00:05	   5,763,904	1,110,578	-0.16	f4e2 c8d7 b2b4 h6e3 g3e5 e7e5 b4c5 e3c5 a3b3 f5e4 f3e4 d7c8 d1c2 e5e7 g2g3 c5f2 b1f1
  15	00:12	  13,493,056	1,105,082	-0.08	f4e2 f8h7 b2b4 c5b4 b1b4 h7f6 g3e5 e7e5 e2g3 h6e3 c3a4 e3f2 a4b6 f2g3 b6a8 f5e4 a3c3 c8d7 b4b7 g3h4
  16	00:15	  17,086,785	1,114,597	 0.00	f4e2 f8h7 b2b4 c5c4 g3e5 e7e5 a2c4 h7f6 e2g3 h6f4 g3e2 f4h6
  17	00:18	  20,492,150	1,126,561	 0.00	f4e2 f8h7 b2b4 c5c4 g3e5 e7e5 a2c4 h7f6 e2g3 h6f4 g3e2 f4h6
  18	00:22	  26,105,486	1,141,472	 0.00	f4e2 f8h7 b2b4 c5c4 g3e5 e7e5 a2c4 h7f6 e2g3 h6f4 g3e2 f4h6
  19	00:48	  55,214,675	1,135,870	+0.12	b2b4!
  19	01:25	  94,709,182	1,107,450	+0.30	b2b4 c5c4 b4b5 e7f7 f4e2 f8d7 d1c2 f7e7 b5a6 a8a6 e2d4 f5f4 g3h2 d7c5 c3e2 e7f7 c2c3 c5d3 d4e6 c8e6
  20	01:40	 112,042,847	1,110,985	+0.18	b2b4 c5c4 b4b5 e7f7 f4e2 f8d7 d1c2 f7e7 b5a6 a8a6 e2d4 f5f4 g3h2 d7c5 c3e2 e7f7 c2c3 c5d3 d4b5 c8d7 a2c4
  21	02:39	 175,987,624	1,102,679	+0.42	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 g8f7 a3c3 f8d7 c3c7 h6f4 g3f4 e5d3 c7d7 f7e8
  22	03:20	 222,607,862	1,109,267	+0.42	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 g8f7 a3c3 f8d7 c3c7 h6f4 g3f4 e5d3 c7d7 f7e8
  23	03:59	 267,728,905	1,119,455	+0.30	b2b4?
  23	04:36	 309,832,281	1,119,174	+0.38	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 g8f7 a3c3 f8d7 f4e6 e5d3 c3d3 d7e5 g3e5 d6e5 d1e2 a8b8
  24	07:13	 497,960,572	1,149,122	+0.06	b2b4?
  24	08:18	 571,094,412	1,146,637	+0.34	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 h6f4 g3f4 f8d7 a3c3 e5d3 c3d3 d7f6 f4d6 a8d8 d6e7 d8d5 d1e2
  25	11:14	 778,090,327	1,153,444	+0.30	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5g4 f4e6 f8e6 g3d6 e7f7 d5e6 f7f1 d1c2 g4e3 c2d2 f1f2 d2c3 a8c8 b6a6 e3d1 c3b4 h6c1 a6b6 c1a3 b4a3 d1c3 b6b2 f2b2
  26	16:23	1,150,633,317	1,170,353	+0.14	b2b4?
  26	19:08	1,341,014,416	1,167,897	+0.26	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5g4 f4e6 f8e6 g3d6 e7f7 d5e6 f7f1 d1c2 g4e3 c2d2 f1f2 d2e1 f2c2 g2g3 e3g2 e1f1 g2e3 f1g1 e3g4 d6c5 h6c1 a3a4 c1e3 c5e3 g4e3 e6e7 g8g7
  27	32:50	2,322,462,682	1,178,478	+0.40	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 a8a6 f4e2 f5e4 f3e4 e5g4 a2c4 a6a8 g3d6 e7e4 c4d3 g4f2 d1e1 f2d3 a3d3 a8e8 b1b2 h6g7 b2c2 e4h4 e1f2 h4e4 d3b3 e8d8 b3b6 g6g5 d6c5 d8d7
  28	49:08	3,520,540,260	1,193,929	+0.36	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 a8a6 f4e2 f5e4 f3e4 e5g4 a2c4 a6a8 a5a6 b7a6 a3a6 a8a6 c4a6 g4e3 d1e1 e7e4 a6d3 e4g4 g3d6 e3g2 e1f2 h6e3 f2f1 f8d7 b1b7 d7f6 e2c3 g2h4 f1e2 e3d4
Nothing is unstable (Lawrence Krauss)
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: test position from a correspondence game

Post by zullil »

Maarten Claessens wrote:The current version of WaDuuttie sees it at depth 19, but needs more time as he can only use one core:

Code: Select all

FEN: r1b2nk1/1p2r3/p2p2pb/P1pPnp1p/4PN1P/R1N2PB1/BP4P1/1R1K4 w - - 0 24 

WaDuuttie:
   1	00:00	         210	210		+0.06	d1c2 f5e4 c3e4
   2	00:00	         424	424		+0.06	d1c2 f5e4 c3e4
   3	00:00	       1,834	1,834		-0.40	d1c2 f5e4 f3e4 c8g4
   4	00:00	       3,573	3,573		-0.32	d1c2 f5e4 f3e4 c8g4 b1f1
   5	00:00	       6,127	612,700		-0.38	d1c2 f5e4 f3e4 c8g4 b1f1 a8e8
   6	00:00	      16,415	1,641,500	-0.14	d1c2!
   6	00:00	      21,537	717,900		-0.12	d1c2 f5e4 c3e4 c8f5 f4d3 f5e4 f3e4 f8d7
   7	00:00	      34,165	1,138,833	-0.24	d1c2?
   7	00:00	      42,326	1,058,150	-0.28	d1c2 f5e4 c3e4 c8f5 f4d3 f8d7 b1e1 a8e8
   8	00:00	      61,377	1,022,950	-0.28	d1c2 f5e4 c3e4 c8f5 f4d3 f8d7 b1d1 f5e4 f3e4 a8e8 d3e5 d7e5 g3e5 e7e5
   9	00:00	     149,461	1,067,578	-0.32	d1c2 f5e4 f3e4 h6g7 b1f1 c8g4 c3d1 a8e8 d1e3 g4d7
  10	00:00	     740,487	1,042,939	-0.22	d1e2 f5e4 c3e4 c8f5 b1f1 h6g7 a3e3 f5e4 e3e4 a8e8 f1e1 f8d7
  11	00:00	     927,728	1,042,391	-0.20	d1e2 f5e4 c3e4 c8f5 b1f1 h6g7 a3e3 f5e4 e3e4 a8e8 f4e6 g7f6 e2f2
  12	00:01	   1,247,125	1,065,918	-0.32	d1e2?
  12	00:01	   1,487,612	1,077,979	-0.30	d1e2 f5e4 c3e4 c8f5 b2b4 c5c4 a3c3 e5g4 c3c4 a8e8 b1f1 f5e4 c4e4 e7e4 f3e4 e8e4 e2d1 e4b4
  13	00:02	   3,107,712	1,102,025	-0.18	f4e2!
  13	00:04	   4,728,716	1,072,271	-0.24	f4e2 c8d7 b2b4 h6e3 g3e5 e7e5 b4c5 e3c5 a3b3 f5e4 f3e4 a8e8 b3b7 d7c8 b7b6 c5b6
  14	00:05	   5,763,904	1,110,578	-0.16	f4e2 c8d7 b2b4 h6e3 g3e5 e7e5 b4c5 e3c5 a3b3 f5e4 f3e4 d7c8 d1c2 e5e7 g2g3 c5f2 b1f1
  15	00:12	  13,493,056	1,105,082	-0.08	f4e2 f8h7 b2b4 c5b4 b1b4 h7f6 g3e5 e7e5 e2g3 h6e3 c3a4 e3f2 a4b6 f2g3 b6a8 f5e4 a3c3 c8d7 b4b7 g3h4
  16	00:15	  17,086,785	1,114,597	 0.00	f4e2 f8h7 b2b4 c5c4 g3e5 e7e5 a2c4 h7f6 e2g3 h6f4 g3e2 f4h6
  17	00:18	  20,492,150	1,126,561	 0.00	f4e2 f8h7 b2b4 c5c4 g3e5 e7e5 a2c4 h7f6 e2g3 h6f4 g3e2 f4h6
  18	00:22	  26,105,486	1,141,472	 0.00	f4e2 f8h7 b2b4 c5c4 g3e5 e7e5 a2c4 h7f6 e2g3 h6f4 g3e2 f4h6
  19	00:48	  55,214,675	1,135,870	+0.12	b2b4!
  19	01:25	  94,709,182	1,107,450	+0.30	b2b4 c5c4 b4b5 e7f7 f4e2 f8d7 d1c2 f7e7 b5a6 a8a6 e2d4 f5f4 g3h2 d7c5 c3e2 e7f7 c2c3 c5d3 d4e6 c8e6
  20	01:40	 112,042,847	1,110,985	+0.18	b2b4 c5c4 b4b5 e7f7 f4e2 f8d7 d1c2 f7e7 b5a6 a8a6 e2d4 f5f4 g3h2 d7c5 c3e2 e7f7 c2c3 c5d3 d4b5 c8d7 a2c4
  21	02:39	 175,987,624	1,102,679	+0.42	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 g8f7 a3c3 f8d7 c3c7 h6f4 g3f4 e5d3 c7d7 f7e8
  22	03:20	 222,607,862	1,109,267	+0.42	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 g8f7 a3c3 f8d7 c3c7 h6f4 g3f4 e5d3 c7d7 f7e8
  23	03:59	 267,728,905	1,119,455	+0.30	b2b4?
  23	04:36	 309,832,281	1,119,174	+0.38	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 g8f7 a3c3 f8d7 f4e6 e5d3 c3d3 d7e5 g3e5 d6e5 d1e2 a8b8
  24	07:13	 497,960,572	1,149,122	+0.06	b2b4?
  24	08:18	 571,094,412	1,146,637	+0.34	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5d7 b6c6 e7e4 c6c4 e4c4 a2c4 d7e5 c4d3 h6f4 g3f4 f8d7 a3c3 e5d3 c3d3 d7f6 f4d6 a8d8 d6e7 d8d5 d1e2
  25	11:14	 778,090,327	1,153,444	+0.30	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5g4 f4e6 f8e6 g3d6 e7f7 d5e6 f7f1 d1c2 g4e3 c2d2 f1f2 d2c3 a8c8 b6a6 e3d1 c3b4 h6c1 a6b6 c1a3 b4a3 d1c3 b6b2 f2b2
  26	16:23	1,150,633,317	1,170,353	+0.14	b2b4?
  26	19:08	1,341,014,416	1,167,897	+0.26	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 b7a6 b1b6 f5e4 f3e4 e5g4 f4e6 f8e6 g3d6 e7f7 d5e6 f7f1 d1c2 g4e3 c2d2 f1f2 d2e1 f2c2 g2g3 e3g2 e1f1 g2e3 f1g1 e3g4 d6c5 h6c1 a3a4 c1e3 c5e3 g4e3 e6e7 g8g7
  27	32:50	2,322,462,682	1,178,478	+0.40	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 a8a6 f4e2 f5e4 f3e4 e5g4 a2c4 a6a8 g3d6 e7e4 c4d3 g4f2 d1e1 f2d3 a3d3 a8e8 b1b2 h6g7 b2c2 e4h4 e1f2 h4e4 d3b3 e8d8 b3b6 g6g5 d6c5 d8d7
  28	49:08	3,520,540,260	1,193,929	+0.36	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 a8a6 f4e2 f5e4 f3e4 e5g4 a2c4 a6a8 a5a6 b7a6 a3a6 a8a6 c4a6 g4e3 d1e1 e7e4 a6d3 e4g4 g3d6 e3g2 e1f2 h6e3 f2f1 f8d7 b1b7 d7f6 e2c3 g2h4 f1e2 e3d4
Latest Stockfish dev version with 1 thread finds the move at depth 29:

Code: Select all

info depth 29 seldepth 43 score cp 50 lowerbound nodes 369993631 nps 1695095 time 218273 multipv 1 pv b2b4 c5c4 f4e2 f5e4 c3e4 c8f5 e2c3 f8d7 b4b5 d7c5 b5a6 f5e4
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Maarten Claessens
Posts: 106
Joined: Mon May 12, 2014 10:08 am
Location: Near Nijmegen

Re: test position from a correspondence game

Post by Maarten Claessens »

With bigger hash-tables (about 800 Mb where he used in the first try 200 Mb), WaDuuttie only needs 18 ply:

Code: Select all

  18	00:39	  43,846,439	1,102,777	+0.24	b2b4!
  18	00:56	  62,543,837	1,108,933	+0.40	b2b4 c5c4 b4b5 f5e4 c3e4 c8f5 b5a6 a8a6 f4e2 a6a7 e2c3 h6g7 g3e5 g7e5 b1b4 f5e4 c3e4 c4c3 f3f4 e5g7 d1c2 b7b6
Nothing is unstable (Lawrence Krauss)
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Carotino
Posts: 220
Joined: Fri Jun 11, 2010 10:40 am
Location: Italy

Re: test position from a correspondence game

Post by Carotino »

Deep Rybka 4.1 finds the move almost immediately.

1 +0.22 24.b4 Cfd7 (0.01)
1 +0.29 24.Rc2 Ad7 25.Tf1 Tc8 (0.01)
2 +0.30 24.Rc2 Ad7 25.Tf1 c4 26.exf5 (0.01)
3 +0.33 24.Rc2 Tf7 25.Ce6 f4 (0.02)
4 +0.45 24.Rc2 Tf7 25.Ce6 f4 26.Ah2 Cfd7 27.Tf1 (0.03)
4 +0.36 24.Rc2 Tf7 25.Ce6 f4 26.Ah2 Cfd7 27.Tf1 (0.03)
5 +0.36 24.Rc2 Tf7 25.Cd3 Cfd7 26.exf5 gxf5 27.Af4 Th7 (0.03)
6 +0.30 24.Rc2 Tf7 25.Ce6 f4 26.Ah2 c4 27.Cd4 Cfd7 28.Tc1 (0.04)
7 +0.41 24.Rc2 Tf7 25.Ce6 f4 26.Ah2 c4 27.Cg5 Axg5 28.hxg5 Ch7 (0.08)
8 +0.34 24.Rc2 Tf7 25.Ce6 f4 26.Ah2 c4 27.Cg5 Axg5 28.hxg5 Ch7 (0.09)
9 +0.46 24.Rc2 Tf7 25.Ce6 f4 26.Ah2 c4 27.Cg5 Axg5 28.hxg5 Ch7 29.Ce2 (0.23)
9 +0.35 24.Rc2 fxe4 25.Cxe4 Af5 26.Te1 Tae8 27.Rc3 Ag7 28.Rd2 Axe4 29.Txe4 Cfd7 30.Ce6 Cf6 (0.24)
10 +0.37 24.Rc2 fxe4 25.Cxe4 Af5 26.Te1 Tae8 27.Rc3 Ag7 28.Rd2 Cf7 29.Tb3 Ae5 30.Ab1 Ad4 31.Tb6 (0.33)
11 +0.44 24.Rc2 fxe4 25.Cxe4 Af5 26.Te1 Tae8 27.Rc3 Ag7 28.Rd2 Cf7 29.Tb3 Ae5 30.Ab1 Rg7 31.Ac2 c4 32.Tb6 (0.67)
12 +0.48 24.Rc2 fxe4 25.Cxe4 Af5 26.Te1 Tae8 27.Rd1 Axe4 28.Txe4 Rf7 29.Ce6 Cxe6 30.dxe6+ Rf6 31.Ad5 Cc6 32.Axc6 bxc6 33.Axd6 Txe6 34.Txe6+ (1.98)
13 +0.47 24.Rc2 fxe4 25.Cxe4 Af5 26.Te1 Cfd7 27.Ce6 c4 28.Rd1 Cd3 29.Axd6 Tf7 30.Txd3 cxd3 31.C4g5 Tc8 32.Af4 Tf6 33.Ce4 Axe4 (3.08)
14 +0.36 24.Rc2 Ad7 25.Tb3 Tf7 26.Cfe2 fxe4 27.fxe4 Ag4 28.Tb6 Td8 29.Ta1 Ag7 30.Cf4 c4 31.Tf1 Ac8 (6.13)
14 +0.47 24.b4 c4 25.Cfe2 fxe4 26.Cxe4 Af5 27.C2c3 Cfd7 28.Ta1 Tf8 29.Cxd6 Ad3 30.Cce4 Af1 31.Cxb7 Axg2 32.d6 Tee8 33.Rc2 Axf3 34.Cbc5 (10.67)
Roberto
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: test position from a correspondence game

Post by yanquis1972 »

even after about a half dozen attempts, including one on a single thread, i can't replicate the good result from stockfish using the latest (oct 15) build) on slow hardware (4 cpu athlon 2400mhz). have allowed each search to run through depth 31. anyone else??
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: test position from a correspondence game

Post by zullil »

yanquis1972 wrote:even after about a half dozen attempts, including one on a single thread, i can't replicate the good result from stockfish using the latest (oct 15) build) on slow hardware (4 cpu athlon 2400mhz). have allowed each search to run through depth 31. anyone else??
With Hash=4 GB, SF (1 thread) succeeds at depth 29. With other hash sizes I just tried---larger and smaller---the move is not found at that depth. So I guess I got "lucky" when I randomly chose 4 GB for my earlier runs.

Code: Select all

Stockfish 201014 64 SSE4.2 by Tord Romstad, Marco Costalba and Joona Kiiski
setoption name Threads value 1
setoption name Hash value 4096
position fen r1b2nk1/1p2r3/p2p2pb/P1pPnp1p/4PN1P/R1N2PB1/BP4P1/1R1K4 w - - 0 24
isready
readyok
go infinite

Code: Select all

info depth 29 seldepth 43 score cp 50 lowerbound nodes 369993631 nps 1725306 time 214451 multipv 1 pv b2b4 c5c4 f4e2 f5e4 c3e4 c8f5 e2c3 f8d7 b4b5 d7c5 b5a6 f5e4
info depth 29 currmove b2b4 currmovenumber 1
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