How long until checkmate in 9 moves?

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Ajedrecista
Posts: 2132
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

How long until checkmate in 9 moves?

Post by Ajedrecista »

Hello:

I played a game with white today:

https://lichess.org/ytq0Dudu

[pgn][Event "Casual Blitz game"]
[Site "https://lichess.org/ytq0Dudu"]
[Date "2024.03.18"]
[White "Anonymous"]
[Black "Anonymous"]
[Result "1-0"]
[UTCDate "2024.03.18"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "300+0"]
[ECO "A84"]
[Opening "Dutch Defense: Normal Variation"]
[Termination "Normal"]
[Annotator "lichess.org"]

1. d4 f5 2. c4 Nf6 { A84 Dutch Defense: Normal Variation } 3. Nf3 Ne4 4. d5 e6 5. Nbd2 Nxf2 6. Kxf2 Bc5+ 7. e3 e5 8. Nxe5 Qg5 9. Nb3 Bb6 10. c5 f4 11. Nf3 fxe3+ 12. Bxe3 Qf6 13. Bd4 Qf5 14. cxb6 axb6 15. Qe2+ Kf7 16. Qe5 Qg6 17. Ng5+ Kg8 18. Qe7 h6 19. Qd8+ { Black resigns. } 1-0[/pgn]

I won, helped by the dubious sacrifices of my opponent. However, after the game, I paid attention on the position after 16.- ..., Qg6:

[d]rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

I got a checkmate in 9 moves with 17.- Ng5, using Multi-PV and forward-backward analysis with SF 16.1, but SF 16.1 is unable to see the checkmate in 9 moves without Multi-PV and without forward-backward analysis. I let it up to depth 43 or so, without success. OTOH, other engines are able to find it, for example the old engines Hermann 2.4 64-bit (from year 2008), Ruffian 1.05 (from year 2003), Rybka 2.2 64-bit (from year 2006), SOS 5.1 for Arena (from year 2005) and Spike 1.2 (from year 2006):

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

Hermann 2.4 64 bit:
  1/16	00:00	         437	218.500	+6,99	Qe5xc7
  9/29	00:01	     987.815	894.760	+12,37	Bf1d3 Qg6f6 Qe5g3 Qf6h6 Nf3g5+ Kf7g8 Rh1e1 Qh6h5 Qg3g4 Qh5xg5 Qg4xg5
 10/30	00:02	   2.388.876	934.981	+13,46	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Nb8a6 Nf3e5+ Kf7g8 Bd3xg6
 11/35	00:06	   6.151.062	925.946	+16,11	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Rh8g8 Ra1e1 Nb8c6 Qh6xh7+ Rg8g7 Bd3xg6+ Kf7f6
 11/36+	00:09	   8.759.548	915.505	+16,11	Nf3g5+ Kf7f8 Qe5f4+ Kf8e7 Ra1e1+ Qg6e6 d5xe6 h7h6
 11/36+	00:12	  10.781.387	914.607	+16,61	Nf3g5+ Qg6xg5 Qe5xg5 Rh8f8 Kf2g1 Nb8c6 d5xc6 d7d6 c6xb7 c7c5
 11/36	00:23	  21.830.773	957.112	+M9	Nf3g5+ Kf7g8 Qe5e7 Qg6f5+ Kf2g1 Qf5f8 d5d6 Ra8a4 Bf1c4+ Ra4xc4 Ra1f1 Qf8xf1+ Kg1xf1 Rc4c1+ Nb3xc1 c7xd6
 12/36	00:27	  26.392.993	966.352	+M9	Nf3g5+ Kf7g8 Qe5e7 Qg6f5+ Kf2g1 Qf5f8 d5d6 Ra8a4 Bf1c4+ Ra4xc4 Ra1f1 Qf8xf1+ Kg1xf1 Rc4c1+ Nb3xc1 c7xd6
 13/36	00:38	  37.144.502	981.516	+M9	Nf3g5+ Kf7g8 Qe5e7 Qg6f5+ Kf2g1 Qf5f8 d5d6 Ra8a4 Bf1c4+ Ra4xc4 Ra1f1 Qf8xf1+ Kg1xf1 Rc4c1+ Nb3xc1 c7xd6

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

Ruffian 1.0.5:
  1/1	00:00	           2	0	+9,56	Qe5xc7
  2/4	00:00	         163	0	+8,58	Qe5xc7 Qg6e4
  2/6	00:00	       1.528	0	+8,61	Nf3g5+ Kf7g8 Qe5xc7 Qg6xg5 Qc7xc8+
  2/6	00:00	       2.016	0	+8,94	Qe5f4+ Kf7g8 Qf4xc7
  3/12	00:00	       4.088	0	+8,91	Qe5f4+ Kf7g8 Qf4xc7 Nb8a6
  3/12	00:00	       5.075	0	+9,22	Qe5xc7 Rh8f8 Bd4xb6
  4/12	00:00	       7.914	0	+8,13	Qe5xc7 Rh8f8 Qc7xb6 Kf7g8
  4/12	00:00	      10.576	0	+9,78	Qe5f4+ Kf7g8 Qf4xc7 Qg6e8 Qc7xb6
  5/14	00:00	      19.644	0	+9,67	Qe5f4+ Kf7g8 Qf4xc7 Qg6e8 Ra1e1 Qe8f8
  6/16	00:00	     111.580	3.719.333	+10,12	Qe5f4+ Kf7g8 Qf4xc7 Nb8c6 d5xc6 Qg6c2+ Kf2g3 Qc2g6+ Kg3h3 b7xc6
  6/19	00:00	     265.015	3.312.687	+13,12	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8
  7/19	00:00	     331.118	3.679.088	+13,25	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 d7d6 Bd4xf6 Kf7xf6
  8/20	00:00	     885.827	3.851.421	+13,80	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 c7c6 Bd4xf6 Kf7xf6 Bd3xg6 c6xd5
  9/21	00:00	   2.345.053	3.782.343	+13,90	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 c7c6 Bd4xf6 Kf7xf6 d5xc6 b7xc6 Bd3xg6
 10/26+	00:01	   7.238.389	3.829.835	+14,25	Bf1d3
 10/26	00:02	   9.114.317	3.861.998	+14,29	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h6
 11/29+	00:05	  21.547.635	3.820.502	+14,64	Bf1d3
 11/29	00:06	  25.113.622	3.765.160	+15,67	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h4+ Kf6f7 Rh1f1
 11/30	00:10	  40.624.592	3.786.075	+M10	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6f6 Bd4xf6 Ra8xa2 Qf4xc7 g7xf6 Qc7d8+ Kg8g7 Qd8e7+ Kg7h6 Qe7xf6+ Kh6h5 Bd3e2+ Kh5h4 Ng5f7+
 12/30	00:15	  56.915.597	3.786.799	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Rh1f1 d7d6 Kf2g3+ Bc8f5 Rf1xf5+ Kf8g8 Re1e8+
 13/30	00:23	  90.023.929	3.834.068	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Rh1f1 d7d6 Kf2g3+ Bc8f5 Rf1xf5+ Kf8g8 Re1e8+
 14/30	00:50	 191.230.969	3.807.864	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Rh1f1 d7d6 Kf2g3+ Bc8f5 Rf1xf5+ Kf8g8 Re1e8+

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

Rybka 2.2 64 bit:
   2	00:00	       5.680	121.173	+8,25	Bf1d3
   3	00:00	       6.710	143.146	+10,13	Bf1d3
   4	00:00	       7.434	158.592	+9,69	Bf1d3
   5	00:00	      16.839	269.424	+10,39	Bf1d3 Qg6f6
   6	00:00	      21.724	278.067	+10,45	Bf1d3 Qg6f6 Qe5h5+ g7g6
   7	00:00	      25.774	329.907	+10,45	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6
   8	00:00	      43.719	355.303	+11,49	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5
   9	00:00	     128.891	494.323	+12,03	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6
  10	00:00	     160.018	474.951	+12,03	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6
  11	00:00	     294.864	507.463	+13,92	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6
  12	00:01	     626.226	518.815	+14,91	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Nb8c6 Bd4xf6
  13	00:02	   1.340.916	532.208	+17,68	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Ra8a4 Bd4xf6
  14	00:03	   1.971.527	522.881	+18,44	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Ra8xa2 Bd4xf6
  15	00:08	   4.638.311	536.015	+20,82	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Ra8xa2 Bd4xf6
  16	00:15	   7.972.709	540.844	+21,62	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Ra8xa2 Bd4xf6
  17	00:31	  17.949.489	588.432	+M12	Bf1d3 Qg6f6 Qe5h5+ g7g6
  18	00:44	  33.204.218	764.843	+M11	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Ra8xa2 Bd4xf6
  18	00:50	  40.879.723	831.215	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+
  19	01:00	  54.092.372	918.126	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+
  20	01:19	  80.192.018	1.035.544	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+
  21	01:54	 129.355.886	1.156.849	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

SOS 5.1 for Arena:
  1/5	00:00	           7	0	+10,27	Qe5xc7
  1/7	00:00	          57	0	+10,35	Qe5f4+
  1/7	00:00	         105	0	+10,52	Qe5e3
  2/8	00:00	         715	0	+10,41	Qe5f4+ Kf7g8 Qf4xc7
  3/11	00:00	       1.451	1.019.000	+10,41	Qe5xc7 Qg6e4 Qc7d6
  3/11	00:00	       1.713	1.019.000	+10,56	Qe5xc7 Qg6e4 Qc7d6
  3/11	00:00	       2.111	1.019.000	+10,83	Qe5xc7 Qg6e4 Qc7d6
  3/11	00:00	       2.364	1.019.000	+10,95	Qe5xc7 Qg6e4 Nf3e5+
  3/11	00:00	       2.950	1.019.000	+11,59	Qe5xc7 Qg6e4 Nf3e5+
  3/12	00:00	       3.331	1.019.000	+11,71	Qe5xc7 Qg6e4 Qc7g3
  3/12	00:00	       3.644	1.019.000	+11,82	Qe5xc7 Qg6e4 Nf3g5+
  4/14	00:00	       8.369	1.019.000	+11,73	Bf1d3
  5/14	00:00	       8.856	1.019.000	+11,73	Bf1d3
  5/14	00:00	       8.942	1.019.000	+11,97	Bf1d3
  5/16	00:00	      11.869	1.019.000	+15,07	Bf1d3
  6/16	00:00	      19.414	1.019.000	+15,07	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8
  7/26	00:00	     275.684	1.019.000	+14,67	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8 Kf7g8
  8/26	00:00	     278.451	1.019.000	+14,70	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8 Kf7g8 Bh8e5
  8/26	00:00	     279.465	1.019.000	+14,81	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8 Kf7g8 Bh8e5
  8/26	00:00	     283.204	1.019.000	+15,17	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8 Kf7g8 Bh8e5
  8/26	00:00	     290.695	1.019.000	+15,28	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6
  8/26	00:00	     338.890	1.019.000	+17,92	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6
  9/30	00:00	     523.676	1.019.000	+17,98	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Rh1e1 d7d6 Kf2g1
  9/30	00:00	     530.877	1.019.000	+18,09	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Rh1e1 d7d6 Nf3g5
  9/30	00:00	     571.053	1.019.000	+18,54	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Rh1e1 d7d6 Nf3g5
  9/30	00:00	     583.399	1.019.000	+18,65	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Rh1e1 d7d6 Re1e8+
  9/30	00:00	     593.644	1.019.000	+18,76	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Rh1e1 d7d6 Re1e8+
 10/35	00:01	   1.653.797	828.541	+18,80	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 d5xc6/ep b7xc6 Bd3xg6+ Kf7g8 Bg6e8
 10/35	00:01	   1.667.018	828.541	+18,91	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 d5xc6/ep b7xc6 Bd3xg6+ Kf7g8 Bg6f5
 10/35	00:01	   1.674.847	828.541	+19,02	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 d5xc6/ep b7xc6 Bd3xg6+ Kf7g8 Bg6f5
 10/35	00:01	   1.717.156	828.541	+19,13	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 d5xc6/ep b7xc6 Bd3xg6+ Kf7g8 Bg6c2
 10/35	00:01	   1.729.518	828.541	+19,24	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 d5xc6/ep b7xc6 Bd3xg6+ Kf7g8 Bg6c2
 10/35	00:01	   1.744.763	828.541	+19,35	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 Bd3xg6+ Kf7g8 Ra1e1 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+
 10/35	00:01	   1.853.921	828.541	+19,90	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 c7c5 Bd3xg6+ Kf7g8 Ra1e1 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+
 11/39	00:03	   4.008.273	1.310.268	+19,91	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 d5d6 b6b5 d6xc7 Nb8c6 Nd4xb5
 11/39	00:03	   4.103.909	1.310.268	+20,02	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 d5d6 b6b5 d6xc7 Nb8c6 Rh1e1
 11/39	00:03	   4.145.445	1.314.890	+20,13	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 d5d6 b6b5 Nd4xb5 c7xd6 Bd3c4+
 11/39	00:03	   4.224.695	1.314.129	+20,24	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 d5d6 b6b5 Bd3xb5
 11/39	00:03	   4.639.874	1.316.668	+20,90	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 d5d6 b6b5 Bd3xb5
 11/39	00:03	   4.762.098	1.303.068	+21,01	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+
 12/40	00:07	  11.530.545	1.471.653	+21,11	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 d7d6 Bd4xf6 Kf7xf6 Bd3xg6 Kf6e7 Ra1e1+
 13/48	00:23	  35.797.137	1.546.590	+21,12	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+
 13/48	00:23	  36.452.629	1.539.766	+21,23	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+
 13/48	00:29	  43.678.743	1.494.992	+23,54	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+
 13/48	00:29	  44.227.444	1.490.937	+23,65	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+ Kf8e8 Qf6xh8+
 13/48	00:35	  51.242.383	1.452.134	+25,08	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+ Kf8e8 Qf6xh8+
 13/48	00:35	  52.048.872	1.449.448	+25,19	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+
 13/48	00:36	  52.678.799	1.448.866	+25,30	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+ Kf8e8 Qf6xh8+
 13/48	00:37	  54.107.637	1.439.720	+25,52	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Kf7g8 Nf3g5 b6b5 Bd3xg6 h7xg6 Qh6xg6+ Kg8f8 Qg6f6+ Kf8e8 Qf6xh8+
 14/50	01:21	 119.417.283	1.463.150	+25,54	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Ra1e1 Nb8c6 d5xc6 Qf6e6 c6xd7 Bc8xd7 Nf3g5+ Kf7e8 Ng5xe6 Bd7xe6 Re1xe6+ Ke8d7 Qh6xh7+
 14/50	01:22	 121.190.387	1.462.083	+25,65	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Ra1e1 Nb8c6 d5xc6 Qf6e6 c6xd7 Bc8xd7 Nf3g5+ Kf7e8 Ng5xe6 Bd7xe6 Re1xe6+ Ke8d7 Qh6xh7+
 14/50	01:34	 139.949.068	1.478.994	+25,72	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Kf2g3 Ra8xa2 Rh1f1+
 14/50	01:38	 144.221.362	1.468.923	+28,03	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Kf2g3 Ra8xa2 Rh1f1+
 14/50	01:38	 144.477.925	1.468.633	+28,14	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Kf2g3 Ra8xa2 Rh1f1+ Kf8g8 Bd3xh7+ Rh8xh7 Re1e8+
 14/50	02:17	 183.454.938	1.334.542	+M10	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Ra1e1 Qe8f8 Qf4xf8+ Kg8xf8 Kf2g3 Ra8xa2 Rh1f1+ Kf8g8 Bd3xh7+ Rh8xh7 Re1e8+
 15/50	03:35	 312.908.644	1.454.711	+M10	Nf3g5+ Kf7g8 Ra1e1 Qg6f6+ Kf2g3 h7h5 Qe5e8+ Qf6f8 d5d6 h5h4+ Kg3g4 Ra8a4 Bf1c4+ Ra4xc4 Qe8xf8+ Kg8xf8 Rh1f1+ Kf8g8 Re1e8+
 15/50	03:50	 341.715.509	1.483.873	+M9	Nf3g5+ Kf7g8 Qe5e7 Qg6f5+ Kf2g1 Qf5f8 d5d6 Ra8a4 Bf1c4+ Ra4xc4 Ra1f1 Qf8xf1+ Kg1xf1 Rc4c1+ Nb3xc1 c7xd6 Qe7xg7+
 16/50	05:08	 495.369.980	1.603.613	+M9	Nf3g5+ Kf7g8 Qe5e7 Qg6f5+ Kf2g1 Qf5f8 d5d6 Ra8a4 Bf1c4+ Ra4xc4 Ra1f1 Qf8xf1+ Kg1xf1 Rc4c1+ Nb3xc1 c7xd6 Qe7xg7+

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

Spike 1.2:
   0	00:00	           0	0	+10,41	
   1	00:00	         151	151.000	+10,99	Qe5xc7
   1	00:00	         224	224.000	+10,99	Qe5xc7
   2	00:00	         464	464.000	+10,85	Qe5xc7 Rh8f8
   2	00:00	         942	942.000	+10,85	Qe5xc7 Rh8f8
   3	00:00	       1.457	485.666	+12,06	Qe5xc7 Rh8f8 Ra1e1
   3	00:00	       4.579	915.800	+12,06	Qe5xc7 Rh8f8 Ra1e1
   4	00:00	       6.231	1.038.500	+10,24	Qe5xc7 Rh8f8 Qc7g3 Qg6xg3+ Kf2xg3 d7d6
   4	00:00	       8.153	1.164.714	+11,92	Bf1d3 Qg6h6 Qe5xc7 Rh8e8
   4	00:00	      27.378	1.140.750	+12,96	d5d6 Rh8e8 Bf1c4+ Re8e6 Bc4xe6+ d7xe6 d6xc7
   4	00:00	      28.222	1.128.880	+12,96	d5d6 Rh8e8 Bf1c4+ Re8e6 Bc4xe6+ d7xe6 d6xc7
   5	00:00	      36.774	1.186.258	+12,91	d5d6 Rh8e8 Bf1c4+ Re8e6 Qe5xe6+ Qg6xe6 d6xc7 Nb8c6 Nf3g5+ Kf7g8 Ng5xe6 d7xe6 Bd4xb6
   5+	00:00	      41.238	1.212.882	+13,27	Bf1d3 Qg6h6 Nf3g5+ Kf7f8 Qe5f4+ Kf8e7 d5d6+
   5+	00:00	      42.775	1.222.142	+15,27	Bf1d3 Qg6h6 Nf3g5+ Kf7f8 Qe5f4+ Kf8e7 d5d6+
   5	00:00	      51.413	1.195.651	+17,31	Bf1d3 Qg6f6 Qe5h5+ Kf7g8 Bd4xf6 g7xf6
   5	00:00	      60.049	1.177.431	+17,31	Bf1d3 Qg6f6 Qe5h5+ Kf7g8 Bd4xf6 g7xf6
   6	00:00	      71.543	1.212.593	+17,66	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8
   6	00:00	      98.246	1.212.913	+17,66	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8
   7-	00:00	     110.813	1.231.255	+17,35	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8 Kf7e8
   7-	00:00	     216.770	1.371.962	+17,36	Bf1d3 Qg6f6 Qe5h5+ g7g6 Bd4xf6 g6xh5 Bf6xh8 Kf7e8
   7	00:00	     236.217	1.381.385	+17,90	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 d7d6 Bd4xf6 Kf7xf6
   7	00:00	     236.266	1.381.672	+17,90	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 d7d6 Bd4xf6 Kf7xf6
   8-	00:00	     273.695	1.410.798	+17,60	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 d7d6 Bd4xf6 Kf7xf6 Rh1e1
   8-	00:00	     506.567	1.507.639	+17,60	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 d7d6 Bd4xf6 Kf7xf6 Rh1e1
   8	00:00	     536.720	1.520.453	+17,69	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Ra8a5 Bd3xg6+ Kf7g8 Bg6h5 Ra5xd5
   8	00:00	     536.769	1.520.592	+17,69	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Ra8a5 Bd3xg6+ Kf7g8 Bg6h5 Ra5xd5
   9+	00:00	     598.543	1.542.636	+17,99	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Ra8a5 Bd3xg6+ Kf7g8 Rh1e1
   9+	00:00	     598.543	1.542.636	+17,99	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 Ra8a5 Bd3xg6+ Kf7g8 Rh1e1
   9	00:00	     676.851	1.563.166	+18,37	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 d7d6 Bd3xg6+ Kf7g8 Bg6h5 c7c5 Qh6g5+ Kg8f8
   9	00:00	     934.021	1.596.617	+18,37	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 d7d6 Bd3xg6+ Kf7g8 Bg6h5 c7c5 Qh6g5+ Kg8f8
  10-	00:00	   1.145.683	1.620.485	+18,07	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 d7d6 Bd3xg6+ Kf7g8 Bg6h5 c7c5 Qh6g5+ Kg8f8
  10-	00:02	   4.192.051	1.581.906	+18,07	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 d7d6 Bd3xg6+ Kf7g8 Bg6h5 c7c5 Qh6g5+ Kg8f8
  10+	00:02	   4.566.152	1.589.332	+20,07	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 d7d6 Bd3xg6+ Kf7g8 Nf3g5 h7xg6 Qh6xg6+
  10+	00:02	   4.566.152	1.589.332	+20,07	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Qf6xd4+ Nb3xd4 d7d6 Bd3xg6+ Kf7g8 Nf3g5 h7xg6 Qh6xg6+
  10	00:03	   4.831.948	1.592.075	+20,41	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h8
  10	00:03	   4.831.997	1.592.091	+20,41	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h8
  11-	00:03	   5.294.090	1.603.298	+18,41	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h8 Nb8a6
  11-	00:07	  11.730.306	1.613.744	+18,41	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h8 Nb8a6
  11	00:07	  12.156.740	1.618.955	+20,38	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h8 Nb8a6
  12	00:08	  14.307.436	1.628.065	+21,59	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Rh8g8 Bd4xf6 Kf7xf6 Qh6xh7 Rg8g7 Qh7h8 Nb8a6 Rh1e1 Kf6f7
  12+	00:17	  28.635.859	1.618.668	+22,38	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Rh1e1 Qe8f8 Qf4xf8+ Kg8xf8 Ng5xh7+ Rh8xh7 Bd3g6
  12+	00:17	  28.635.859	1.618.668	+22,38	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Rh1e1 Qe8f8 Qf4xf8+ Kg8xf8 Ng5xh7+ Rh8xh7 Bd3g6
  12	00:24	  40.634.840	1.683.438	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Rh1e1 Qe8f8 Qf4xf8+ Kg8xf8 Ng5xh7+ Kf8f7 Nh7g5+ Kf7f8 Bd3g6 Rh8xh2 Re1e8+
  12	00:25	  42.381.829	1.690.404	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Rh1e1 Qe8f8 Qf4xf8+ Kg8xf8 Ng5xh7+ Kf8f7 Nh7g5+ Kf7f8 Bd3g6 Rh8xh2 Re1e8+
  13	00:28	  47.643.034	1.696.024	+M9	Nf3g5+ Kf7f8 Qe5f4+ Kf8g8 Bf1d3 Qg6e8 Rh1e1 Qe8f8 Qf4xf8+ Kg8xf8 Ng5xh7+ Kf8f7 Nh7g5+ Kf7f8 Bd3g6 Rh8xh2 Re1e8+
Summary of the oldies that got it:

Code: Select all

Engine               Time (ms)  Year
------------------------------------
Ruffian 1.0.5          15030    2003
Hermann 2.4 64-bit     22809    2008
Spike 1.2              24138    2006
Rybka 2.2 64-bit       49181    2006
SOS 5.1 for Arena     230286    2005
Luckier runs of SF or analysis by other engines are welcome. The position shall not be hard for engines, but I was surprised on how much time SF takes without find 17.- Ng5+.

Regards from Spain.
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Jouni
Posts: 3673
Joined: Wed Mar 08, 2006 8:15 pm
Full name: Jouni Uski

Re: How long until checkmate in 9 moves?

Post by Jouni »

SF 16.1 is 3x better = mate in 27 :)
...
17.Qf4+ Kg8 18.Qxc7 h6 19.h4 Qf5 20.Re1 Ra4 21.Qxc8+ Kh7 22.Qc3 Rxd4 23.Nbxd4 Qf6 24.Bd3+ g6 25.h5 Rg8 26.Qd2 Rf8 27.hxg6+ Kg8 28.Nf5 Na6 29.Nxh6+ Kh8 30.Nf5+ Kg8 31.d6 Nc5 32.Bc4+ Ne6 33.Ne7+ Qxe7
+- (#27) Depth: 33/37 00:00:24 184mN
Jouni
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Ajedrecista
Posts: 2132
Joined: Wed Jul 13, 2011 9:04 pm
Location: Madrid, Spain.

Re: How long until checkmate in 9 moves?

Post by Ajedrecista »

Hello:

Multi-PV = 2 helps dramatically at getting checkmate scores when comparing without Multi-PV, at least in my few runs. SF 16.1 finally got #9 after depth 50!

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

Stockfish_16.1-windows-x86-64-sse41-popcnt:
[...]
---------------------------------------------------------------------------
 49/22	15:59	 659.378.390	687.271	+M11	Bf1d3 Qg6f6 Qe5h5+ g7g6 Qh5h6 Nb8c6 Bd4xf6 Kf7xf6 Bd3xg6 Nc6e7 Bg6h5+ Ne7g6 Bh5xg6 h7xg6 Qh6xh8+ Kf6f7 Nf3g5+ Kf7e7 Rh1e1+ Ke7d6 Qh8e5+
 49/20	15:59	 659.378.390	687.271	+M10	Ra1e1 Rh8f8 Bf1d3 Qg6h6 d5d6 Kf7g8 Bd3c4+ Kg8h8 Qe5e7 Rf8g8 Bc4xg8 Qh6g6 Bg8c4 h7h5 Bc4d3 Qg6f7 Qe7xf7 c7xd6 Qf7xg7+
---------------------------------------------------------------------------
 50/20	18:41	 768.678.689	685.150	+M10	Ra1e1 Rh8f8 Bf1d3 Qg6h6 d5d6 Kf7g8 Bd3c4+ Kg8h8 Qe5e7 Rf8g8 Bc4xg8 Qh6g6 Bg8c4 h7h5 Bc4d3 Qg6f7 Qe7xf7 c7xd6 Qf7xg7+
 50/22	18:41	 768.678.689	685.150	+M9	Nf3g5+ Kf7g8 Qe5e7 Qg6f5+ Kf2g1 Qf5f8 d5d6 Ra8a4 Bf1c4+ Ra4xc4 Ra1f1 Qf8f2+ Rf1xf2 Rc4c1+ Nb3xc1 c7xd6 Qe7xg7+
Regards from Spain.

Ajedrecista.
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JVMerlino
Posts: 1404
Joined: Wed Mar 08, 2006 10:15 pm
Location: San Francisco, California

Re: How long until checkmate in 9 moves?

Post by JVMerlino »

The King from CM9000 is your friend here, finding Mate in 9 in 7 seconds on a 3200GHz box.

Code: Select all

Time	Depth	Score	Positions	Moves
0:00	1/3	9.51	3300		17.Bd3 Qh6 18.Qxc7
0:00	1/3	9.63	7407		17.Ng5+ Kf8 18.Bd3 Qh6 19.Qxc7
0:00	1/4	9.72	16379		17.Ng5+ Kg8 18.Bd3 d6 19.Bxg6 dxe5 20.Bf7+ Kf8 21.Bxe5
0:00	1/4	14.58	19649		17.Bd3 Qf6 18.Qh5+ Kf8 19.Bxf6 gxf6
0:00	1/5	15.15	40932		17.Bd3 Qf6 18.Qh5+ Ke7 19.Bxf6+ gxf6 20.Rhe1+ Kd8 21.Qf7
0:00	1/6	14.88	86255		17.Bd3 Qf6 18.Qh5+ g6 19.Bxf6 gxh5 20.Bxh8 d6
0:00	1/7	15.13	222791		17.Bd3 Qf6 18.Qh5+ g6 19.Bxf6 gxh5 20.Bxh8 d6 21.Rhe1
0:00	1/8	14.88	798154		17.Bd3 Qf6 18.Rhe1 c5 19.Qh5+ g6 20.Bxf6 gxh5 21.Bxh8 d6
0:02	1/9	15.25	3639855		17.Bd3 Qf6 18.Qg3 Na6 19.Bxf6 gxf6 20.Rhe1 Nc5 21.Nxc5 bxc5 22.Qxc7
0:07	1/9	Mate09	9324689		17.Ng5+ Kf8 18.Qf4+ Kg8 19.Bd3 Qe8 20.Rae1 Qf8 21.Qxf8+ Kxf8 22.Nxh7+ Kf7 23.Ng5+ Kf8 24.Bg6 Rxa2 25.Re8#
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xenos1984
Posts: 9
Joined: Mon Feb 19, 2024 7:50 am
Full name: Manuel Hohmann

Re: How long until checkmate in 9 moves?

Post by xenos1984 »

With Stockfish 16.1 BMI2 running 32 threads on an AMD Ryzen Threadripper 3970X 32-Core Processor it took about 3 minutes and search depth 37.

Code: Select all

info depth 37 seldepth 63 multipv 1 score mate 9 nodes 10390787150 nps 57282654 hashfull 1000 tbhits 0 time 181395 pv f3g5 f7f8 e5f4 f8g8 f1d3 g6e8 a1e1 e8f8 f4f8 g8f8 h1f1 d7d6 f2g3 c8f5 f1f5 f8g8 e1e8
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Jouni
Posts: 3673
Joined: Wed Mar 08, 2006 8:15 pm
Full name: Jouni Uski

Re: How long until checkmate in 9 moves?

Post by Jouni »

6 cores i5:

Analysis by Stockfish 16.1:

17.Ng5+ Kg8 18.Qe7 Qf5+ 19.Kg1 Qf8 20.d6 Ra4 21.Bc4+ Rxc4 22.Rf1 Qf2+ 23.Rxf2 Rc1+ 24.Nxc1 cxd6 25.Qxg7#
+- (#9) Depth: 41/20 00:00:57 364mN
Jouni
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cpeters
Posts: 186
Joined: Wed Feb 17, 2021 7:44 pm
Full name: Christian Petersen

Re: How long until checkmate in 9 moves?

Post by cpeters »

one core Intel i5-3210M @ 3.100GHz

igel 3.1

Code: Select all

id name Igel 3.1.0 64 POPCNT
id author V. Medvedev, V. Shcherbyna
setoption name Hash value 2048
position fen rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17
go infinite
info depth 1 seldepth 4 score cp 1264 time 1 nodes 72 tbhits 0 pv f3g5 g6g5 e5g5
info depth 2 seldepth 4 score cp 1264 time 1 nodes 141 tbhits 0 pv f3g5 g6g5 e5g5
info depth 3 seldepth 12 score cp 1716 time 1 nodes 315 tbhits 0 pv f3g5 g6g5 e5g5 g7g6 d4h8
info depth 4 seldepth 12 score cp 1255 time 1 nodes 561 tbhits 0 pv f3g5 g6g5 e5g5 h8g8 a2a4
info depth 5 seldepth 12 score cp 1301 time 2 nodes 887 tbhits 0 pv f3g5 g6g5 e5g5 h8g8 f1d3 a8a4
info depth 6 seldepth 12 score cp 1012 time 4 nodes 2032 tbhits 0 pv f3g5 g6g5 e5g5 h8g8 d4c5 b6c5 b3c5
info depth 7 seldepth 18 score cp 1647 time 14 nodes 9111 tbhits 0 pv e5f4 f7e7 a1e1 g6e6 d5e6 d7e6 f4c7 b8d7 c7c4 a8a2
info depth 8 seldepth 18 score cp 1693 time 16 nodes 11142 tbhits 0 pv e5f4 f7e7 a1e1 g6e6 d5e6 d7e6 d4g7 h8e8 g7f6 e7f7 f3g5 f7f8
info depth 9 seldepth 23 score cp 881 time 62 nodes 59360 tbhits 0 pv f1d3 g6h6 d3g6 h7g6 d4c3 a8a2 h1e1 a2a1 e1a1 f7g8
info depth 10 seldepth 28 score cp 1432 time 97 nodes 94099 tbhits 0 pv f1d3 g6f6 e5h5 f7g8 d4f6 g7f6 d3h7 h8h7 h5e8 g8g7 e8c8 f6f5 c8b7
info depth 11 seldepth 31 score cp 1477 time 145 nodes 163802 tbhits 0 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 d3g6 f7g8 g6h7 h8h7 h6g6 h7g7 g6e8 g8h7 e8c8 g7f7 d4f3 c7c6 c8h3 h7g8 h3g3 g8h7 g3d6 c6d5
info depth 12 seldepth 35 score cp 1500 time 192 nodes 232252 tbhits 0 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 d3g6 f7g8 g6h7 h8h7 h6g6 h7g7 g6e8 g8h7 e8c8 g7f7 d4f3 c7c6 d5c6 b7c6 c8h3 h7g8 h3g3 g8h7 g3d6 f7g7 d6d2
info depth 13 seldepth 41 score cp 1608 time 430 nodes 597837 tbhits 0 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 d3g6 h7g6 h6h8 b8d7 h8h7 f7f6 h1c1 d7c5 h7c7 c5d3 f2e3 d3c1 c7d6 f6g7 a1c1 c8g4 d6b6
info depth 14 seldepth 41 score cp 1622 time 554 nodes 789007 tbhits 0 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 b8a6 d3g6 h7g6 h6h8 a6c5 h8h7 f7f6 h7h4 f6f7 h4f4 f7g7 f4c7 c5d3 f2g1 d3b2 c7b6 b2d3 d4f3
info depth 15 seldepth 47 score cp 1714 time 1470 nodes 2233352 tbhits 0 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 d3g6 h7g6 h6h8 b8d7 h8h7 f7f6 h1c1 d7c5 h7c7 c5d3 f2e3 d3c1 c7d6 f6g7 d6e7 g7h6 e7f8 h6g5 a1c1
info depth 16 seldepth 47 score cp 1754 time 2007 nodes 3093955 tbhits 0 nps 1519287 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 b8a6 d3g6 h7g6 h6h8 a6c5 h8h7 f7f6 h7h4 f6f7 h4f4 f7g7 f4c7 c5d3 f2g3 g7f7 c7c3 d3c5 b3c5 b6c5 c3c5 f7e8 h1e1 e8d8
info depth 17 seldepth 60 score cp 1843 time 4515 nodes 7098787 tbhits 0 nps 1541581 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 d3g6 h7g6 h6h8 b8d7 h8h7 f7f6 h1c1 d7c5 h7c7 c5e4 f2e3 c8f5 g2g4 f5g4 c1f1 g4f5 c7h7 e4g5 f1f5 g6f5 h7f5 f6g7 f5g5 g7f8 g5h6 f8e8 h6d6
info depth 18 seldepth 60 score cp 2009 time 14447 nodes 22352313 tbhits 0 nps 1572267 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 c7c5 d3g6 h7g6 h6h8 c5d4 h8c8 a8a4 c8b7 a4c4 b7b8 d4d3 b8b6 c4c2 f2g1 f7g7 b6d4 g7f7 a2a3 c2e2
info depth 19 seldepth 60 score cp 2134 time 27003 nodes 41484643 tbhits 0 nps 1547194 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 c7c5 d3g6 h7g6 h6h8 c5d4 h8c8 a8a4 c8b7 d4d3 b7b8 g6g5 b8d6 a4f4 f2e3 f7g7 d6d7 g7g6 e3d3 f4f2 d7e6 g6g7 e6e7 g7g6 e7d6 g6g7 d6c7 g7g8 c7d8 g8h7 d8g5
info depth 20 seldepth 60 score cp 2195 time 42920 nodes 66002991 tbhits 0 nps 1536297 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 c7c5 d3g6 h7g6 h6h8 c5d4 h8c8 b6b5 c8b7 a8a6 b7b8 a6f6 f2g3 f6f5 b8b5 f5g5 g3f3 g5f5 f3g4 d7d6 b5d7 f7g8 d7d6 f5f2 d6g6 g8h8 g4h5 f2b2
info depth 21 seldepth 68 score cp 2225 time 61212 nodes 92708901 tbhits 0 nps 1537814 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 c7c5 d3g6 h7g6 h6h8 c5d4 h8c8 b6b5 c8b7 a8a6 b7b8 d4d3 b8b5 a6a7 b5b6 a7a8 b6c7 f7f6 c7d6 f6g5 d6e7 g5h6 e7d7 h6g5 d7e7 g5f5 e7e6 f5g5 e6e5 g5h6 e5e3 h6h7 e3d3
info depth 22 seldepth 68 score cp 2418 time 150543 nodes 224929451 tbhits 0 nps 1514554 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 c7c5 d3g6 h7g6 h6h8 c5d4 h8c8 b8c6 c8a8 c6e5 b3d4 b6b5 d4b5 g6g5 a8b7 e5g4 f2g1 g4f6 a1f1 f7g7 f1f5 g5g4 b7b6 f6e8 f5g5 g7f7 g5g4 e8f6
info depth 23 seldepth 68 score cp 2717 time 426674 nodes 608107938 tbhits 0 nps 1494120 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 h8g8 h6h7 g8g7 h7h4 f6f7 h4f4 f7g8 f4c7 g7f7 c7b8 g8g7 b8c8 b6b5 d3b5 b7b6 b5d7 f7e7 c8b7 e7f7 a2a8 g7h7
info depth 24 seldepth 68 score mate 16 time 1024450 nodes 1342021583 tbhits 0 nps 1425228 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 h1e1 a8a2 e1e7 f7e7 h6g7 e7d8 g7h8 d8d7 h8g7 d7d8 d4e6 c8e6 g7f8 d8d7 d5e6 d7c6 a1c1 c6d5 d3c4 d5c6 f8f3 d6d5 f3d5
info depth 25 seldepth 68 score mate 16 time 1025191 nodes 1342882819 tbhits 0 nps 1309992 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 h1e1 a8a2 e1e7 f7e7 h6g7 e7d8 g7h8 d8d7 h8g7 d7d8 d4e6 c8e6 g7f8 d8d7 d5e6 d7c6 a1c1 c6d5 d3c4 d5c6 f8f3 d6d5 f3d5
info depth 26 seldepth 68 score mate 16 time 1027061 nodes 1344968120 tbhits 0 nps 1309885 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 h1e1 a8a2 e1e7 f7e7 h6g7 e7d8 g7h8 d8d7 h8g7 d7d8 d4e6 c8e6 g7f8 d8d7 d5e6 d7c6 a1c1 c6d5 d3c4 d5c6 f8f3 d6d5 f3d5
info depth 27 seldepth 68 score mate 15 time 1035559 nodes 1354710947 tbhits 0 nps 1309530 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 b8c6 d5c6 b7c6 h1e1 c8a6 e1e7 f7e7 h6g7 e7d8 d3a6 a8a6 g7h8 d8e7 h8g7 e7d6 d4b5 c6b5 g7f6 d6d5 a1d1 d5c4 d1d4
info depth 28 seldepth 68 score mate 14 time 1045901 nodes 1366883307 tbhits 0 nps 1308192 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 b8c6 d5c6 b7c6 h1e1 c8a6 e1e7 f7e7 h6g7 e7d8 g7h8 d8e7 a1e1 e7f7 h8h7 f7f8 d3g6 a6c4 h7h8 c4g8 h8h6
info depth 29 seldepth 68 score mate 14 time 1056020 nodes 1378635422 tbhits 0 nps 1306895 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 f3d4 d7d6 d4e6 c8e6 d3g6 h7g6 d5e6 f7e6 h1e1 e6d7 h6h8 b8c6 h8g7 d7c8 e1e8 c6d8 g7e7 c8b8 e7d8 b8a7 d8a8
info depth 30 seldepth 68 score mate 12 time 1087452 nodes 1415409163 tbhits 0 nps 1305501 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 d3g6 h7g6 h6h8 f6f5 h8f8 f5e4 f3d2 e4d5 f8f7 d5e5 d2c4 e5e4 f7f3
info depth 31 seldepth 68 score mate 12 time 1098215 nodes 1427843246 tbhits 0 nps 1301581 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 d3g6 h7g6 h6h8 f6f7 f3g5 f7e7 d5c6 d7c6 h1e1 c8e6 e1e6 e7d7 h8e8
info depth 32 seldepth 68 score mate 12 time 1123241 nodes 1456901213 tbhits 0 nps 1300149 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 d3g6 h7g6 h6h8 f6f7 f3g5 f7e7 d5c6 d7c6 h1e1 c8e6 e1e6 e7d7 h8e8
info depth 33 seldepth 68 score mate 11 time 1158675 nodes 1497204234 tbhits 0 nps 1297051 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 d7d6 d5c6 b7c6 d3g6 h7g6 h6h8 f6f5 h8c8 f5f6 c8f8
info depth 34 seldepth 68 score mate 11 time 1207572 nodes 1552132823 tbhits 0 nps 1292169 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 d7d6 d5c6 b7c6 d3g6 h7g6 h6h8 f6f5 h8c8 f5f6 c8f8
info depth 35 seldepth 68 score mate 11 time 1253617 nodes 1607433012 tbhits 0 nps 1285333 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 d7d6 d5c6 b7c6 d3g6 h7g6 h6h8 f6f5 h8c8 f5f6 c8f8
info depth 36 seldepth 68 score mate 11 time 1348936 nodes 1721919588 tbhits 0 nps 1282236 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 d7d6 d5c6 b7c6 d3g6 h7g6 h6h8 f6f5 h8c8 f5f6 c8f8
info depth 37 seldepth 72 score mate 11 time 1668553 nodes 2091921037 tbhits 0 nps 1276502 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 d7d6 d5c6 b7c6 d3g6 h7g6 h6h8 f6f5 h8c8 f5f6 c8f8
info depth 38 seldepth 72 score mate 11 time 1845290 nodes 2294506845 tbhits 0 nps 1253733 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 d7d6 d5c6 b7c6 d3g6 h7g6 h6h8 f6f5 h8c8 f5f6 c8f8
info depth 39 seldepth 72 score mate 11 time 2148001 nodes 2638801134 tbhits 0 nps 1243439 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6f7 f3e5 f7e8 h7g6 e8e7 h6g7 e7d6 g7f6 d6d5 h1d1
Stockfish 8

Code: Select all

>> setoption name Hash value 2048
>> setoption name Threads value 1
>> position fen rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17
>> go infinite
<< info depth 1 seldepth 1 multipv 1 score cp 1487 nodes 84 nps 28000 tbhits 0 time 3 pv e5c7
<< info depth 2 seldepth 2 multipv 1 score cp 1999 nodes 230 nps 46000 tbhits 0 time 5 pv e5c7 b6b5 f3e5 f7f8 e5g6 h7g6 c7c8 f8f7
<< info depth 3 seldepth 4 multipv 1 score cp 2253 nodes 754 nps 83777 tbhits 0 time 9 pv f1d3 c7c5 d3g6 f7g6 e5g5 g6f7 g5g7 f7e8 g7h8 e8e7
<< info depth 4 seldepth 6 multipv 1 score cp 2529 nodes 1173 nps 97750 tbhits 0 time 12 pv f1d3 c7c5 d3g6 h7g6 e5g7 f7e8 g7h8 e8f7 h8c8 c5d4 b3d4
<< info depth 5 seldepth 8 multipv 1 score cp 2269 nodes 1910 nps 127333 tbhits 0 time 15 pv f1d3 b8a6 d3g6 f7g6 e5g7 g6f5 g7f7 f5e4
<< info depth 6 seldepth 9 multipv 1 score cp 1937 nodes 3354 nps 152454 tbhits 0 time 22 pv f1d3 h8g8 d3g6 f7g6 e5g3 g6f7 g3c7
<< info depth 7 seldepth 10 multipv 1 score cp 1622 nodes 4234 nps 162846 tbhits 0 time 26 pv f1d3 g6f6 e5h5 g7g6 d4f6 g6h5 f6h8
<< info depth 8 seldepth 10 multipv 1 score cp 1462 nodes 6049 nps 195129 tbhits 0 time 31 pv f1d3 g6f6 e5h5 g7g6 d4f6 g6h5 f6h8 f7g8 h8f6
<< info depth 9 seldepth 13 multipv 1 score cp 1473 nodes 6875 nps 202205 tbhits 0 time 34 pv f1d3 g6f6 e5h5 g7g6 d4f6 g6h5 f6h8 f7g8 h8f6 c7c6
<< info depth 10 seldepth 15 multipv 1 score cp 1506 nodes 8363 nps 209075 tbhits 0 time 40 pv f1d3 g6f6 e5h5 g7g6 d4f6 g6h5 f6h8 f7g8 h8f6 c7c6 d5d6
<< info depth 11 seldepth 21 multipv 1 score cp 1995 nodes 54587 nps 311925 tbhits 0 time 175 pv f1d3 g6f6 e5h5 g7g6 h5h6 f6d4 b3d4 d7d6 h1e1 c8d7 h6f4 f7g8 f3g5 d7f5 e1e8 g8g7 d4f5 g6f5 d3f5
<< info depth 12 seldepth 21 multipv 1 score cp 2275 nodes 117070 nps 369305 tbhits 0 time 317 pv f1d3 g6f6 e5h5 g7g6 h5h6 b6b5 d4f6 f7f6 h1e1 b8c6 d5c6 d7c6 h6f4 c8f5 f4e5 f6f7
<< info depth 13 seldepth 22 multipv 1 score cp 2366 nodes 186946 nps 402900 tbhits 0 time 464 pv f1d3 g6f6 e5h5 g7g6 h5h6 h8g8 d4f6 f7f6 h6h7 g8g7 h7h8 c7c6 h8c8 g7f7 c8h8 f7g7
<< info depth 14 seldepth 24 multipv 1 score cp 2511 nodes 319628 nps 434277 tbhits 0 time 736 pv f1d3 g6f6 e5h5 g7g6 h5h6 h8g8 d4f6 f7f6 h6h7 g8g7 h7h8 c7c6 h8c8 f6f7 d5c6 b7c6 f3e5 f7f6 c8f8 f6e5 f8g7 e5d6 d3g6
<< info depth 15 seldepth 26 multipv 1 score cp 2591 nodes 546363 nps 478845 hashfull 1 tbhits 0 time 1141 pv f1d3 g6f6 e5h5 g7g6 h5h6 h8g8 d4f6 f7f6 h6h7 g8g7 h7h8 c7c6 h8c8 f6f7 f3g5 f7f6 c8d8 f6e5 d5c6 b7c6 h1e1 e5d6
<< info depth 16 seldepth 32 multipv 1 score cp 2929 nodes 1281162 nps 580762 hashfull 2 tbhits 0 time 2206 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d5c6 a8a4 h6g5 f6g7 g5e5 g7g8 e5e8 g8g7 c6d7 h8e8 d7e8q a4f4 e8e5 f4f6 e5c7 g7h6 c7c8 f6f7 f2g3 h6g7
<< info depth 17 seldepth 32 multipv 1 score cp 2947 nodes 1458822 nps 599105 hashfull 4 tbhits 0 time 2435 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d5c6 a8a4 h6g5 f6g7 g5e5 g7g8 e5e8 g8g7 c6d7 h8e8 d7e8q a4f4 e8e5 f4f6 e5c7 g7h6 c7c8 f6f7 f2g3
<< info depth 18 seldepth 36 multipv 1 score cp 2941 nodes 1640105 nps 620546 hashfull 5 tbhits 0 time 2643 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d5c6 d7d5 h6f4 f6g7 f4e5 g7g8 e5d5 g8g7 d5e5 g7h6 e5f4 h6g7 f4c7 c8d7 c6d7 h8d8 c7e5 g7h6 e5g5 h6g7 g5e7 g7h6 f3e5
<< info depth 19 seldepth 42 multipv 1 score cp 3068 lowerbound nodes 2101603 nps 683670 hashfull 5 tbhits 0 time 3074 pv f1d3
<< info depth 19 currmove f1d3 currmovenumber 1
<< info depth 19 seldepth 42 multipv 1 score cp 3117 lowerbound nodes 2244741 nps 700387 hashfull 6 tbhits 0 time 3205 pv f1d3
<< info depth 19 seldepth 42 multipv 1 score cp 3003 upperbound nodes 2479224 nps 725343 hashfull 6 tbhits 0 time 3418 pv f1d3 g6f6
<< info depth 19 currmove f1d3 currmovenumber 1
<< info depth 19 seldepth 42 multipv 1 score cp 3129 lowerbound nodes 2561904 nps 733649 hashfull 6 tbhits 0 time 3492 pv f1d3
<< info depth 19 seldepth 42 multipv 1 score cp 3060 upperbound nodes 2665537 nps 744563 hashfull 6 tbhits 0 time 3580 pv f1d3 g6f6
<< info depth 19 currmove f1d3 currmovenumber 1
<< info depth 19 seldepth 42 multipv 1 score cp 3145 lowerbound nodes 2809736 nps 758977 hashfull 6 tbhits 0 time 3702 pv f1d3
<< info depth 19 currmove f1d3 currmovenumber 1
<< info depth 19 seldepth 42 multipv 1 score cp 3308 lowerbound nodes 3203871 nps 794216 hashfull 7 tbhits 0 time 4034 pv f1d3
<< info depth 19 currmove f1d3 currmovenumber 1
<< info depth 19 seldepth 42 multipv 1 score cp 3514 lowerbound nodes 3742785 nps 832099 hashfull 10 tbhits 0 time 4498 pv f1d3
<< info depth 19 seldepth 42 multipv 1 score cp 3334 upperbound nodes 3797966 nps 832704 hashfull 10 tbhits 0 time 4561 pv f1d3 g6f6
<< info depth 19 currmove f1d3 currmovenumber 1
<< info depth 19 seldepth 42 multipv 1 score cp 3558 lowerbound nodes 3997489 nps 836469 hashfull 10 tbhits 0 time 4779 pv f1d3
<< info depth 19 seldepth 42 multipv 1 score cp 3634 nodes 4156312 nps 844264 hashfull 10 tbhits 0 time 4923 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d5c6 a8a5 b3a5 d7d5 h6f4 f6g7 f4e5 g7g8 e5d5 g8g7 d5e5 g7h6 e5h8 b7c6 h8f8 h6h5 f8c8 h5h6 c8h3 h6g7 h3d7 g7g8 a5c6
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3641 lowerbound nodes 4261425 nps 852114 hashfull 10 tbhits 0 time 5001 pv f1d3
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3648 lowerbound nodes 4294988 nps 852518 hashfull 10 tbhits 0 time 5038 pv f1d3
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3659 lowerbound nodes 4326393 nps 853331 hashfull 10 tbhits 0 time 5070 pv f1d3
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3675 lowerbound nodes 4358576 nps 854287 hashfull 10 tbhits 0 time 5102 pv f1d3
<< info depth 20 seldepth 42 multipv 1 score cp 3652 upperbound nodes 4401629 nps 854685 hashfull 10 tbhits 0 time 5150 pv f1d3 g6f6
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3679 lowerbound nodes 4437417 nps 857140 hashfull 10 tbhits 0 time 5177 pv f1d3
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3716 lowerbound nodes 4523689 nps 863629 hashfull 11 tbhits 0 time 5238 pv f1d3
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3764 lowerbound nodes 4616701 nps 865847 hashfull 11 tbhits 0 time 5332 pv f1d3
<< info depth 20 seldepth 42 multipv 1 score cp 3715 upperbound nodes 4640149 nps 867317 hashfull 11 tbhits 0 time 5350 pv f1d3 g6f6
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3775 lowerbound nodes 4676054 nps 869801 hashfull 11 tbhits 0 time 5376 pv f1d3
<< info depth 20 seldepth 42 multipv 1 score cp 3652 upperbound nodes 4791773 nps 877292 hashfull 12 tbhits 0 time 5462 pv f1d3 g6f6
<< info depth 20 currmove f1d3 currmovenumber 1
<< info depth 20 seldepth 42 multipv 1 score cp 3791 lowerbound nodes 4833160 nps 880196 hashfull 12 tbhits 0 time 5491 pv f1d3
<< info depth 20 seldepth 42 multipv 1 score cp 3911 nodes 4968669 nps 889804 hashfull 12 tbhits 0 time 5584 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d5c6 a8a5 b3a5 d7d5 h6f4 f6g7 f4e5 g7g8 e5d5 g8g7 d5e5 g7h6 e5h8 b7c6 h8f8 h6h5 f8c8 h5h6 a5c6 h6g7 c8d7 g7h6 d7c7
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 3918 lowerbound nodes 5038412 nps 894286 hashfull 12 tbhits 0 time 5634 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3804 upperbound nodes 5169441 nps 902013 hashfull 13 tbhits 0 time 5731 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 3918 lowerbound nodes 5187823 nps 902858 hashfull 13 tbhits 0 time 5746 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 3933 lowerbound nodes 5236148 nps 905907 hashfull 13 tbhits 0 time 5780 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 3954 lowerbound nodes 5257282 nps 907366 hashfull 13 tbhits 0 time 5794 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3911 upperbound nodes 5276013 nps 907779 hashfull 13 tbhits 0 time 5812 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 3953 lowerbound nodes 5308562 nps 909779 hashfull 13 tbhits 0 time 5835 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3804 upperbound nodes 5324595 nps 910342 hashfull 13 tbhits 0 time 5849 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 3958 lowerbound nodes 5341879 nps 911427 hashfull 13 tbhits 0 time 5861 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 4037 lowerbound nodes 5387654 nps 914401 hashfull 13 tbhits 0 time 5892 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3911 upperbound nodes 5389774 nps 914450 hashfull 13 tbhits 0 time 5894 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 4041 lowerbound nodes 5408345 nps 915582 hashfull 14 tbhits 0 time 5907 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3804 upperbound nodes 5423103 nps 916374 hashfull 14 tbhits 0 time 5918 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 4058 lowerbound nodes 5436196 nps 917191 hashfull 14 tbhits 0 time 5927 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 4317 lowerbound nodes 5521990 nps 922792 hashfull 14 tbhits 0 time 5984 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3911 upperbound nodes 5553979 nps 924738 hashfull 15 tbhits 0 time 6006 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 4358 lowerbound nodes 5586562 nps 926768 hashfull 15 tbhits 0 time 6028 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3804 upperbound nodes 5686354 nps 933106 hashfull 15 tbhits 0 time 6094 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 4400 lowerbound nodes 5706245 nps 934071 hashfull 15 tbhits 0 time 6109 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 5207 lowerbound nodes 5838094 nps 942235 hashfull 16 tbhits 0 time 6196 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 6217 lowerbound nodes 5841240 nps 942287 hashfull 16 tbhits 0 time 6199 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3911 upperbound nodes 5851134 nps 942818 hashfull 16 tbhits 0 time 6206 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 6418 lowerbound nodes 5856159 nps 943020 hashfull 16 tbhits 0 time 6210 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3804 upperbound nodes 5873029 nps 943913 hashfull 16 tbhits 0 time 6222 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 6386 lowerbound nodes 5875266 nps 943969 hashfull 16 tbhits 0 time 6224 pv f1d3
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 9484 lowerbound nodes 5893928 nps 945145 hashfull 16 tbhits 0 time 6236 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3911 upperbound nodes 6097215 nps 956275 hashfull 17 tbhits 0 time 6376 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 9787 lowerbound nodes 6106021 nps 956756 hashfull 17 tbhits 0 time 6382 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score cp 3804 upperbound nodes 6465512 nps 975779 hashfull 17 tbhits 0 time 6626 pv f1d3 g6f6
<< info depth 21 currmove f1d3 currmovenumber 1
<< info depth 21 seldepth 42 multipv 1 score cp 8665 lowerbound nodes 6468349 nps 975765 hashfull 17 tbhits 0 time 6629 pv f1d3
<< info depth 21 seldepth 42 multipv 1 score mate 13 nodes 6796239 nps 990272 hashfull 19 tbhits 0 time 6863 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d5c6 a8a2 a1a2 d7c6 h6f4 f6g7 h1e1 c8e6 e1e6 h8f8 e6e7 g7g8 d3c4 f8f7 f4f7 g8h8 f7h7
<< info depth 22 seldepth 42 multipv 1 score mate 13 nodes 7715078 nps 1028402 hashfull 24 tbhits 0 time 7502 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 d5c6 d7c6 h6f4 f6g7 h1e1 c8e6 e1e6 h8f8 e6e7 g7g8 d3c4 f8f7 f4f7 g8h8 f7h7
<< info depth 23 seldepth 42 multipv 1 score mate 12 nodes 8436750 nps 1049347 hashfull 26 tbhits 0 time 8040 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 d5c6 d7c6 h1e1 c8e6 d3g6 h7g6 h6h8 f6f7 f3g5 f7e7 e1e6 e7d7 h8e8
<< info depth 24 seldepth 42 multipv 1 score mate 11 nodes 8939365 nps 1063703 hashfull 29 tbhits 0 time 8404 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 c6e5 e1e5 d7d6 h6g5 f6g7 e5e7 g7g8 a2a8 g8f8 a8c8
<< info depth 25 seldepth 42 multipv 1 score mate 11 nodes 13437770 nps 1079772 hashfull 53 tbhits 0 time 12445 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 c6e5 e1e5 d7d6 h6g5 f6g7 e5e7 g7g8 a2a8 g8f8 a8c8
<< info depth 26 seldepth 42 multipv 1 score mate 11 nodes 15005413 nps 1101961 hashfull 56 tbhits 0 time 13617 pv f1d3 g6f6 e5h5 g7g6 h5h6 a8a2 d4f6 f7f6 a1a2 b8c6 h1e1 c6e5 e1e5 d7d6 h6g5 f6g7 e5e7 g7g8 a2a8 g8f8 a8c8
<< info depth 27 seldepth 42 multipv 1 score mate 11 nodes 17830804 nps 1131611 hashfull 60 tbhits 0 time 15757 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6e7 h6g7 e5f7 h1e1 e7d6 g7g6 d6d5 g6e4 d5d6 a1d1
<< info depth 28 seldepth 42 multipv 1 score mate 11 nodes 20456517 nps 1157566 hashfull 71 tbhits 0 time 17672 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6e7 h6g7 e5f7 h1e1 e7d6 g7g6 d6d5 g6e4 d5d6 a1d1
<< info depth 29 seldepth 42 multipv 1 score mate 11 nodes 24938635 nps 1182598 hashfull 90 tbhits 0 time 21088 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6e7 h6g7 e5f7 h1e1 e7d6 g7g6 d6d5 g6e4 d5d6 a1d1
<< info depth 30 seldepth 42 multipv 1 score mate 11 nodes 28444852 nps 1198586 hashfull 103 tbhits 0 time 23732 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6e7 h6g7 e5f7 h1e1 e7d6 g7g6 d6d5 g6e4 d5d6 a1d1
<< info depth 31 seldepth 42 multipv 1 score mate 11 nodes 34800307 nps 1220763 hashfull 126 tbhits 0 time 28507 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6e7 h6g7 e5f7 h1e1 e7d6 g7g6 d6d5 g6e4 d5d6 a1d1
<< info depth 32 seldepth 42 multipv 1 score mate 11 nodes 55893339 nps 1205429 hashfull 196 tbhits 0 time 46368 pv f1d3 g6f6 e5h5 g7g6 h5h6 b8c6 d4f6 f7f6 d3g6 c6e5 g6h7 f6e7 h6g7 e5f7 h1e1 e7d6 g7g6 d6d5 g6e4 d5d6 a1d1
<< info depth 33 seldepth 42 multipv 1 score mate 9 nodes 69424402 nps 1229381 hashfull 242 tbhits 0 time 56471 pv f3g5 f7g8 e5e7 g6f5 f2g1 f5f8 d5d6 a8a4 f1c4 a4c4 a1f1 f8f1 g1f1 c4c1 b3c1 c7d6 e7g7
<< info depth 34 seldepth 42 multipv 1 score mate 9 nodes 73365530 nps 1232702 hashfull 253 tbhits 0 time 59516 pv f3g5 f7g8 e5e7 g6f5 f2g1 f5f8 d5d6 a8a4 f1c4 a4c4 a1f1 f8f1 g1f1 c4c1 b3c1 c7d6 e7g7
<< info depth 35 seldepth 42 multipv 1 score mate 9 nodes 76578379 nps 1237690 hashfull 257 tbhits 0 time 61872 pv f3g5 f7g8 e5e7 g6f5 f2g1 f5f8 d5d6 a8a4 f1c4 a4c4 a1f1 f8f1 g1f1 c4c1 b3c1 c7d6 e7g7
...
<< info depth 41 seldepth 42 multipv 1 score mate 9 nodes 109041822 nps 1297005 hashfull 337 tbhits 0 time 84072 pv f3g5 f7g8 e5e7 g6f5 f2g1 f5f8 d5d6 a8a4 f1c4 a4c4 a1f1 f8f1 g1f1 c4c1 b3c1 c7d6 e7g7
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acase
Posts: 994
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: How long until checkmate in 9 moves?

Post by acase »

Hi Jesus,

ChestUCI Auto-Turbo:

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

ChestUCI:
FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - (13+12)
Position-Analysis: C0/R0/K3/P9/X35 W:12/50
AutoTurbo-Search for Special-Mate [C1/R0/K0/P0/X0] in 9 ... (Hash=2044MB)
AutoTurbo-Search for Special-Mate [C0/R1/K0/P0/X0] in 9 ... (Hash=2044MB)
AutoTurbo-Search for Special-Mate [C0/R2/K0/P0/X0] in 9 ... (Hash=2044MB)
AutoTurbo-Search for Special-Mate [C0/R-2/K0/P0/X0] in 9 ... (Hash=2044MB)
AutoTurbo-Search for Special-Mate [C0/R3/K0/P0/X0] in 9 ... (Hash=2044MB)
AutoTurbo-Search for Special-Mate [C0/R-3/K0/P0/X0] in 9 ... (Hash=2044MB)
 9/9	00:18	 7,020k	551k	+M9	17.Nf3-g5+
 9/9	00:18	 10,932k	595k	+M9	17.Nf3-g5+ Kf7-f8 18.Qe5-f4+ Kf8-g8 19.Bf1-d3 Qg6-e8 20.d5-d6 b6-b5 21.Rh1-e1 Qe8-f8 22.Qf4xf8+ Kg8xf8 23.Ng5xh7+ Rh8xh7 24.Bd3-g6 c7-c6 25.Re1-e8+
AutoTurbo-Search for Special-Mate [C0/R-3/K4/P0/X0] in 9 ... (Hash=2044MB)
Calculation aborted !
Last solution parameters:C0/R-3/K0/P0/X0
Mate in 9 found ! (1 Solution in 00:18)
 9/9	00:18	 861k	561k	+M9	17.Nf3-g5+ Kf7-f8 18.Qe5-f4+ Kf8-g8 19.Bf1-d3 Qg6-e8 20.d5-d6 b6-b5 21.Rh1-e1 Qe8-f8 22.Qf4xf8+ Kg8xf8 23.Ng5xh7+ Rh8xh7 24.Bd3-g6 c7-c6 25.Re1-e8+

ShashChess 34.6:

Code: Select all

FEN: rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - 4 17

ShashChess34.6-x86-64-bmi2:
NNUE evaluation using nn-5af11540bbfe.nnue enabled
 1/1	00:00	 4k	858k	+10.30	17.Qe5-f4+ Qg6-f6 18.Bd4xf6 g7xf6 19.Qf4xc7
 2/2	00:00	 5k	1,065k	+8.84	17.h2-h4
 3/3	00:00	 57k	8,115k	+10.49	17.Bf1-d3 Qg6-h6 18.h2-h4
 4/4	00:00	 86k	12,216k	+10.21	17.Bf1-d3 Qg6-h6 18.Rh1-f1
 5/5	00:00	 128k	16,023k	+9.74	17.Bf1-d3 Qg6-h6 18.Ra1-e1 Ra8xa2 19.Qe5xc7
 6/6	00:00	 174k	21,703k	+9.57	17.Bf1-d3 Qg6-h6 18.Nf3-g5+ Kf7-f8
 7/8	00:00	 256k	25,622k	+9.75	17.Bf1-d3 Qg6-h6 18.Nf3-g5+ Kf7-f8 19.Kf2-g1 Nb8-a6
 8/11	00:00	 386k	29,682k	+14.81	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Rh8-e8 20.Bd4xf6 Re8-e2+ 21.Bd3xe2 Ra8-a5 22.Nf3-g5+ Kf7-e8 23.Nb3xa5 b6xa5 24.Qh6xh7
 9/13	00:00	 607k	33,730k	+16.00	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Ra8-a5 20.Bd4xf6 Kf7xf6 21.Ra1-e1
 10/15	00:00	 741k	37,030k	+16.37	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Rh1-e1 Ra8xa2 22.Ra1xa2 Nc6-e5
 11/13	00:00	 921k	38,393k	+15.73	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Ra8xa2 20.Bd4xf6 Kf7xf6 21.Rh1-e1 Nb8-c6 22.d5xc6 Rh8-e8
 12/19	00:00	 1,330k	40,313k	+16.83	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Rh1-e1 Ra8-a4 22.Bd3xg6 Ra4-g4 23.Bg6-h5+ Rg4-g6 24.Bh5xg6 h7xg6 25.Qh6xh8+ Kf6-f5
 13/21	00:00	 2,173k	41,787k	+18.79	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Ra8xa2 22.d5xc6 Ra2-a5 23.Nb3-d4 Ra5-d5
 14/28	00:00	 11,208k	44,834k	+M16	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Qh6-h4+ g6-g5
 15/16	00:00	 11,355k	44,881k	+M16	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Qh6-h4+ g6-g5 24.Qh4-h6+ Kf6-f7 25.Qh6xh7+ Rg8-g7
 16/17	00:00	 12,167k	45,065k	+M16	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Qh6-h4+ g6-g5 24.Qh4-h6+ Kf6-f7 25.Qh6xh7+ Rg8-g7
 17/18	00:00	 14,382k	45,513k	+M12	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Rh1-e1 Ra8-a4 22.Bd3xg6 Ra4-g4 23.Bg6-h5+ Rg4-g6 24.Bh5xg6 h7xg6 25.Qh6xh8+ Kf6-f5
 18/19	00:00	 17,231k	45,464k	+M11	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 d7-d6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Nb8-c6 22.Bd3xg6 Nc6-e5 23.Re1xe5 d6xe5 24.Qh6-g5+ Kf6-g7 25.Bg6-h5+ Kg7-f8 26.Qg5-f6+ Kf8-g8 27.Qf6-f7+
 19/20	00:00	 19,037k	45,111k	+M11	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 d7-d6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Nb8-c6 22.Bd3xg6 Nc6-e5 23.Re1xe5 d6xe5 24.Qh6-g5+ Kf6-g7 25.Bg6-h5+ Kg7-f8 26.Qg5-f6+ Kf8-g8
 20/21	00:00	 23,742k	46,191k	+M11	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Nb3xa5 d7-d6 24.Qh6-g5+ Kf6-g7 25.Re1-e7+ Kg7-h8 26.Qg5-f6+ Rg8-g7 27.Qf6xg7+
 21/22	00:00	 26,546k	46,572k	+M11	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Nb3xa5 d7-d6 24.Qh6-g5+ Kf6-g7 25.Re1-e7+ Kg7-h8 26.Qg5-f6+ Rg8-g7 27.Qf6xg7+
 22/22	00:01	 47,806k	46,234k	+M11	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Nb3xa5 d7-d6 24.Qh6-g5+ Kf6-g7 25.Re1-e7+ Kg7-h8 26.Qg5-f6+ Rg8-g7 27.Qf6xg7+
 23/22	00:01	 48,072k	46,223k	+M11	17.Bf1-d3 Qg6-f6 18.Qe5-h5+ g7-g6 19.Qh5-h6 Nb8-c6 20.Bd4xf6 Kf7xf6 21.Ra1-e1 Rh8-g8 22.d5xc6 Ra8-a5 23.Nb3xa5 d7-d6 24.Qh6-g5+ Kf6-g7 25.Re1-e7+ Kg7-h8 26.Qg5-f6+ Rg8-g7 27.Qf6xg7+
 24/22	00:01	 63,074k	44,638k	+M9	17.Nf3-g5+ Kf7-g8 18.Qe5-e7 Qg6-f5+ 19.Kf2-e3 Qf5-f8 20.d5-d6 Ra8-a4 21.Bf1-c4+ Ra4xc4 22.Ra1-f1 Qf8xe7+ 23.d6xe7 Rc4-c3+ 24.b2xc3 Nb8-a6 25.Rf1-f8+
 25/18	00:01	 74,267k	42,978k	+M9	17.Nf3-g5+ Kf7-f8 18.Qe5-f4+ Kf8-g8 19.Bf1-d3 Qg6-e8 20.Ra1-e1 Qe8-f8 21.Qf4xf8+ Kg8xf8 22.Rh1-f1 d7-d6 23.Kf2-g1+ Bc8-f5 24.Rf1xf5+ Kf8-g8 25.Re1-e8+
 26/18	00:01	 79,254k	42,450k	+M9	17.Nf3-g5+ Kf7-f8 18.Qe5-f4+ Kf8-g8 19.Bf1-d3 Qg6-e8 20.Ra1-e1 Qe8-f8 21.Qf4xf8+ Kg8xf8 22.Rh1-f1 d7-d6 23.Kf2-g1+ Bc8-f5 24.Rf1xf5+ Kf8-g8 25.Re1-e8+
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Dann Corbit
Posts: 12792
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

Re: How long until checkmate in 9 moves?

Post by Dann Corbit »

Code: Select all

rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acs 12583; bm Ng5+; ce 32750; dm 9; pv Ng5+ Kf8 Qf4+ Kg8 Bd3 Qe8 d6 b5 Rhe1 Qf8 Qxf8+ Kxf8 Nxh7+ Rxh7 Bg6 c6 Re8#; c0 'Chest took a long time.';
rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acd 81/18; acn 2879816k; ce 32750 ; bm Ng5+; pv Ng5+ Kf8 Qf4+ Kg8 Bd3 Qe8 Rhe1 Qf8 Qxf8+ Kxf8 Nxh7+ Kf7 Ng5+ Kf8 Bg6 Rxh2 Re8+; c0 'Stockfish-x64-avx2-EHX; 21 seconds to dm9';
rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acd 22/17; acn 4665180k; ce 32750 ; bm Ng5+; pv Ng5+ Kf8 Qf4+ Kg8 Bd3 Qe8 Rhe1 Qf8 Qxf8+ Kxf8 Nxh7+ Kf7 Ng5+ Kf8 Bg6 Rxh2 Re8+; c0 'Biglep-260244-x65-avx2; 30 seconds to dm9';            
rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acd 25/24; acn 27325k; ce 32750 ; bm Ng5+; pv Ng5+ Kf8 Qf4+ Kg8 Bd3 Qe8 Rhe1 Qf8 Qxf8+ Kxf8 Nxh7+ Kf7 Ng5+ Kf8 Bg6 Rxh2 Re8+; c0 'Houdidit-Tactical:Nalimov; 0 seconds';
rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acd 51/18; acn 2735616k; ce 32750 ; bm Ng5+; pv Ng5+ Kg8 Qe7 Qf5+ Kg1 Qf8 d6 Ra4 Bc4+ Rxc4 Rf1 Qf2+ Rxf2 Rc1+ Nxc1 cxd6 Qxg7+; c0 'Sf-corchess-x64-avx2-EH; 7 seconds';   
rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acd 30/18; acn 1818949k; ce 32750 ; bm Ng5+; pv Ng5+ Kg8 Qe7 Qf5+ Kg1 Qf8 d6 Ra4 Bc4+ Rxc4 Rf1 Qf2+ Rxf2 Rc1+ Nxc1 cxd6 Qxg7+; c0 'ShashChess33-x86-64-avx2; 1 second';   
rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - - acd 55/43; acn 3186561k; ce 32750 ; bm Ng5+; pv Ng5+ Kg8 Qe7 Qf5+ Kg1 Qf8 d6 Ra4 Bc4+ Rxc4 Rf1 Qf2+ Rxf2 Rc1+ Nxc1 cxd6 Qxg7+; c0 'Slow64-avx2; 0 seconds';
Stockfish took 21 seconds on this run, but most of the time it was around 50 seconds. I add an eval hash but I did not add any other tweaks to this version.

30 cores on threadripper 3970, 16GB hash tables max time allowed was 90 seconds for analysis (except Chest319, which I rand for proof purposes). These are the solvers. Every engine I tried found a winning move, but only these solved the problem correctly.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.
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peter
Posts: 3412
Joined: Sat Feb 16, 2008 7:38 am
Full name: Peter Martan

Re: How long until checkmate in 9 moves?

Post by peter »

rnb4r/1ppp1kpp/1p4q1/3PQ3/3B4/1N3N2/PP3KPP/R4B1R w - -

Engine: SlowChess Blitz 2.9 avx20 (4096 MB)
von Jonathan Kreuzer

25/27 0:01 +M9 1.Sg5+ Kf8 2.Df4+ Kg8 3.Ld3 De8
4.The1 Df8 5.Dxf8+ Kxf8 6.Sxh7+ Kf7
7.Sg5+ Kf8 8.Lg6 Txh2 9.Te8+ (25.036.551) 17266

Bester Zug: Sf3-g5 Zeit: 0:01.782 min K/s: 17.127.583 Knoten: 30.315.822

That was with 30 threads of 16x3.5GHz CPU, here's single threaded:

Code: Select all

Engine: SlowChess Blitz 2.9 avx20 (4096 MB)
by Jonathan Kreuzer

19/25  0:01   +M11     1.Bd3 Qf6 2.Qh5+ g6 3.Qh6 Nc6 4.Bxf6 Kxf6 
                       5.Rhe1 d6 6.Bxg6 Ne5 7.Nxe5 dxe5 
                       8.Be8+ Ke7 9.Rxe5+ Be6 10.Qxe6+ Kd8 
                       11.Qd7+ (1.659.235) 1202 


24/31  0:10   +M10++   1.Ng5+ (11.158.218) 1106 

24/31  0:10   +M9      1.Ng5+ Kf8 2.Qf4+ Kg8 3.Bd3 Qe8 
                       4.Rae1 Qf8 5.Qxf8+ Kxf8 6.Nxh7+ Kf7 
                       7.Ng5+ Kf8 8.Bg6 Rxa2 9.Re8+ (11.683.012) 1106 

25/31  0:11   +M9      1.Ng5+ Kf8 2.Qf4+ Kg8 3.Bd3 Qe8 
                       4.Rae1 Qf8 5.Qxf8+ Kxf8 6.Nxh7+ Kf7 
                       7.Ng5+ Kf8 8.Bg6 Rxa2 9.Re8+ (12.207.553) 1104 

best move: Nf3-g5 time: 0:13.000 min  n/s: 1.098.980  nodes: 14.275.763
Peter.
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