How long until your chess engine sees this position is lost?

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Dann Corbit
Posts: 12778
Joined: Wed Mar 08, 2006 8:57 pm
Location: Redmond, WA USA

How long until your chess engine sees this position is lost?

Post by Dann Corbit »

[d]4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -
With evaluation down a full piece, at least

Code: Select all

48) Rxe3; id "STS(v10.0 
    Searching move: Re8xe3
    Best move (Ivanhoe64 v67a): Re8xe3
    identical moves! Found in: 00:00
      2	00:00	         167	0	+0.17	Re8xe3 Qd2xe3 Qd6xa3
      2	00:00	         481	30.000	+0.17	Re8xe3 Qd2xe3 Qd6xa3
      3	00:00	       1.338	83.000	+0.08	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4
      3	00:00	       1.577	98.000	+0.08	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4
      4	00:00	       1.959	122.000	-0.05	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8
      4	00:00	       3.180	198.000	-0.05	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8
      5	00:00	       3.690	230.000	-0.05	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8
      5	00:00	       4.276	267.000	-0.05	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8
      6	00:00	       5.396	337.000	-0.08	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8 Qc4d4
      6	00:00	       6.257	391.000	-0.08	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8 Qc4d4
      7+	00:00	       7.749	484.000	 0.00	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8 Qc4d4
      7+	00:00	       8.163	510.000	+0.08	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Rf8b8 Qc4d4
      7	00:00	      11.737	733.000	+0.11	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 a5a4 Bf1xc4 Rf8d8 Qe3b6 Qa3d6
      7	00:00	      12.525	782.000	+0.11	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 a5a4 Bf1xc4 Rf8d8 Qe3b6 Qa3d6
      8	00:00	      15.779	986.000	+0.16	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 a5a4 Bf1xc4 Qa3d6 Qe3e7 Rf8d8 Qe7xd6 Rd8xd6
      8	00:00	      17.019	1.063.000	+0.16	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 a5a4 Bf1xc4 Qa3d6 Qe3e7 Rf8d8 Qe7xd6 Rd8xd6
      9+	00:00	      30.369	979.000	+0.24	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 a5a4 Bf1xc4 Qa3d6 Qe3e7 Rf8d8 Qe7xd6 Rd8xd6
      9	00:00	      41.840	1.349.000	+0.25	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Rf8d8 Qd4b6 Rd8c8 Qb6d4 Qa3d6 Qd4a7 Qd6f4 Qa7e7
      9	00:00	      45.188	1.457.000	+0.25	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Rf8d8 Qd4b6 Rd8c8 Qb6d4 Qa3d6 Qd4a7 Qd6f4 Qa7e7
     10-	00:00	      65.382	2.109.000	+0.17	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 a5a4 Bf1xc4 Rf8c8 Bc4b5 Qa3d6
     10-	00:00	      74.197	1.578.000	+0.09	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Rf8d8 Qd4b6 Rd8c8 Qb6d4 Qa3d6 Qd4a7 Qd6f4 Qa7e7 Qf4d2
     10	00:00	      93.411	1.987.000	+0.01	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Qd6b6+ Kg1h1 Rf8c8 Qc4a4 Qb6c5 Re1e8+ Kg8g7 Re8xc8 Bf5xc8
     10	00:00	     101.556	1.638.000	+0.01	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Qd6b6+ Kg1h1 Rf8c8 Qc4a4 Qb6c5 Re1e8+ Kg8g7 Re8xc8 Bf5xc8
     11+	00:00	     125.457	2.023.000	+0.09	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 Qa3d6 Qd4xc4 Qd6b6+ Kg1h1 Rf8c8 Qc4a4 Qb6c5 Re1e8+ Kg8g7 Re8xc8 Bf5xc8 c3c4 Qc5d4 Bg2f3 Bc8f5
     11+	00:00	     159.582	2.045.000	+0.17	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Rf8d8 Bg2c6 Qa3a2 d6d7 Bf5e6
     11+	00:00	     198.358	2.543.000	+0.29	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Rf8d8 Bg2c6 Bf5e6 d6d7 Qa3e7
     11	00:00	     291.618	3.102.000	+0.27	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 Qd4e3 Rc8b8 Qe3e7 Qd8xe7 Re1xe7 Rb8b2
     11	00:00	     303.319	2.782.000	+0.27	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 Qd4e3 Rc8b8 Qe3e7 Qd8xe7 Re1xe7 Rb8b2
     12	00:00	     362.340	2.898.000	+0.27	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 Qd4e3 Rc8b8 Qe3e7 Qd8xe7 Re1xe7 Rb8b2
     12	00:00	     379.204	3.033.000	+0.27	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 Qd4e3 Rc8b8 Qe3e7 Qd8xe7 Re1xe7 Rb8b2
     13+	00:00	     531.535	3.090.000	+0.35	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 Qd4e3 Rc8b8 Qe3e7 Qd8xe7 Re1xe7 Rb8b2
     13+	00:00	     645.926	3.454.000	+0.43	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 Qd4e3 Rc8b8 Qe3e7 Qd8xe7 Re1xe7 Rb8b2
     13+	00:00	   1.231.000	3.945.000	+0.55	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Rf8c8 Qe3d4 a5a4 Bf1xc4 Qa3d6 Bc4a2 Qd6d8 d5d6 Qd8xg5+ Kg1f2 Bf5e6 Ba2xe6 f7xe6 Re1a1 Rc8f8+ Kf2e2 Qg5h5+ Ke2d3 Rf8f3+ Kd3c4
     13	00:00	   1.262.157	3.848.000	+0.40	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Qa3d6 Bf1xc4 a5a4 Bc4a2 Rf8b8 Qe3d4 a4a3 c3c4 Qd6f8 c4c5 Rb8b2 Ba2c4 Qf8d8 h2h4
     13	00:00	   1.281.449	3.906.000	+0.40	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Qa3d6 Bf1xc4 a5a4 Bc4a2 Rf8b8 Qe3d4 a4a3 c3c4 Qd6f8 c4c5 Rb8b2 Ba2c4 Qf8d8 h2h4
     14+	00:00	   1.447.433	4.031.000	+0.48	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Qa3d6 Bf1xc4 a5a4 Bc4a2 Rf8b8 Qe3d4 a4a3 c3c4 Qd6f8 c4c5 Rb8b2 Ba2c4 Qf8d8 h2h4
     14+	00:00	   1.929.110	4.267.000	+0.56	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Qa3d6 Bf1xc4 Rf8b8 Qe3d4 a5a4 Bc4a2 a4a3 c3c4 Qd6f8 c4c5 Rb8b2 Ba2c4 Qf8d8 h2h4
     14+	00:00	   2.666.278	4.496.000	+0.68	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e7 a4a3 Re7xd7 a3a2 Rd7a7 a2a1Q Ra7xa1 Qb2xa1 Qd4xc4 Qa1a5 h2h4 Qa5b6+ Qc4d4 Qb6xd4+ c3xd4
     14	00:00	   2.726.455	4.484.000	+0.64	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e7 a4a3 Re7xd7 a3a2 Rd7a7 a2a1Q Ra7xa1 Qb2xa1 Kg1g2 Qa1b2+ Kg2h3 Qb2b5 Kh3h4 Rf8c8 d6d7 Rc8d8 Bf1h3 Qb5b2
     14	00:00	   2.740.694	4.392.000	+0.64	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e7 a4a3 Re7xd7 a3a2 Rd7a7 a2a1Q Ra7xa1 Qb2xa1 Kg1g2 Qa1b2+ Kg2h3 Qb2b5 Kh3h4 Rf8c8 d6d7 Rc8d8 Bf1h3 Qb5b2
     15-	00:01	   3.014.355	4.293.000	+0.56	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e7 a4a3 Re7xd7 a3a2 Rd7a7 a2a1Q Ra7xa1 Qb2xa1 Kg1g2 Qa1b2+ Kg2h3 Qb2b5 Kh3h4 Rf8c8 d6d7 Rc8d8 Bf1h3 Qb5b2
     15+	00:01	   4.772.124	4.706.000	+0.72	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e2 Qb2c1 h2h4 a4a3 Re2f2 Rf8c8 Kg1g2 Bd7c6+ Kg2g1 Bc6b7 d6d7 Rc8d8
     15	00:01	   6.466.584	4.876.000	+0.80	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e2 Qb2c1 Qd4e3 Qc1xe3+ Re2xe3 Bd7e6 Re3e1 Kg8g7 Re1a1 Rf8a8 Kg1f2 Ra8a6 Kf2e3 Ra6xd6 Ra1xa4
     15	00:01	   6.473.288	4.823.000	+0.80	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e2 Qb2c1 Qd4e3 Qc1xe3+ Re2xe3 Bd7e6 Re3e1 Kg8g7 Re1a1 Rf8a8 Kg1f2 Ra8a6 Kf2e3 Ra6xd6 Ra1xa4
     16-	00:02	  13.749.435	5.278.000	+0.72	Re8xe3 Qd2xe3 Qd6xa3 Bg2f1 Bf5d7 Qe3d4 a5a4 d5d6 Qa3b2 Re1e2 Qb2c1 Qd4e3 Qc1xe3+ Re2xe3 Bd7e6 Re3e2 a4a3 Re2a2 Rf8a8 Bf1g2 Ra8a6 Kg1f2 Kg8g7 Kf2e3 Be6c8 Bg2e4 Ra6xd6 Ra2xa3
     16	00:02	  14.178.780	5.284.000	+0.72	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6f5 Kg1g2 h7h6 h2h4 h6h5 Kg2g3 Qf8g7 Qe5e3
     16	00:03	  14.185.742	5.287.000	+0.72	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6f5 Kg1g2 h7h6 h2h4 h6h5 Kg2g3 Qf8g7 Qe5e3
     17	00:03	  15.183.659	5.290.000	+0.67	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 h7h6 h2h4 Be6h3 Kg1f2 Bh3f5 Kf2g3 h6xg5 h4xg5 Qf8g7 Qe5e3
     17	00:03	  15.303.205	5.246.000	+0.67	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 h7h6 h2h4 Be6h3 Kg1f2 Bh3f5 Kf2g3 h6xg5 h4xg5 Qf8g7 Qe5e3
     18	00:03	  17.390.371	5.334.000	+0.67	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 h7h6 h2h4 Be6h3 Kg1f2 Bh3f5 Kf2g3 h6xg5 h4xg5 Qf8g7 Qe5e3
     18	00:03	  17.531.315	5.301.000	+0.67	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 h7h6 h2h4 Be6h3 Kg1f2 Bh3f5 Kf2g3 h6xg5 h4xg5 Qf8g7 Qe5e3
     19+	00:04	  25.321.258	5.521.000	+0.75	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 h7h6 h2h4 Be6h3 Kg1f2 Bh3f5 Kf2g3 h6xg5 h4xg5 Qf8g7 Qe5e3 Qg7h7
     19+	00:06	  36.773.422	5.559.000	+0.83	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 h7h6 h2h4 Be6f5 Kg1g2 Qf8g7 Qe5e7
     19	00:07	  37.340.223	5.540.000	+0.77	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Qe5f6 Bh3xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Kg1g2 Rd7d1 Qf6f3 Qf8d6 Ra2f2 Qd6d7 Qf3a8+ Kg8g7
     19	00:07	  37.488.061	5.511.000	+0.77	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Qe5f6 Bh3xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Kg1g2 Rd7d1 Qf6f3 Qf8d6 Ra2f2 Qd6d7 Qf3a8+ Kg8g7
     20-	00:07	  41.518.367	5.453.000	+0.69	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Qe5f6 Bh3xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Qf6c6 Rd7d1+ Kg1g2 Qf8e7
     20	00:08	  45.311.868	5.469.000	+0.66	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Ra2b2 Rd7d8 Kg1g2 Rd8d6 Kg2g3 Rd6e6 Qe5d4 Qf8c8 h2h3 Qc8c7+ Kg3g2
     20	00:08	  45.902.888	5.459.000	+0.66	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Ra2b2 Rd7d8 Kg1g2 Rd8d6 Kg2g3 Rd6e6 Qe5d4 Qf8c8 h2h3 Qc8c7+ Kg3g2
     21	00:10	  57.356.983	5.579.000	+0.68	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Ra2b2 Rd7d8 Kg1g2 Rd8d6 Rb2b4 Qf8d8 Rb4b7 Qd8a8 Qe5xd6 Qa8xb7+ Kg2g3 Qb7e4
     21	00:10	  58.019.581	5.559.000	+0.68	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Ra2b2 Rd7d8 Kg1g2 Rd8d6 Rb2b4 Qf8d8 Rb4b7 Qd8a8 Qe5xd6 Qa8xb7+ Kg2g3 Qb7e4
     22+	00:15	  86.822.681	5.696.000	+0.76	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 Ra2b2 Rd7d8 Kg1g2 Rd8d6 Rb2b4 Qf8d8 Rb4b7 Qd8a8 Qe5xd6 Qa8xb7+ Kg2g3 Qb7e4
     22	00:17	  95.079.504	5.675.000	+0.71	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Kg1f2 Bh3f5 Kf2g2 h7h6 h2h4 h6xg5 h4xg5 Bf5b1 Kg2f3 a3a2 Rd2h2 f7f6 Qe5d5+ Kg8g7
     22	00:17	  96.139.157	5.648.000	+0.71	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Kg1f2 Bh3f5 Kf2g2 h7h6 h2h4 h6xg5 h4xg5 Bf5b1 Kg2f3 a3a2 Rd2h2 f7f6 Qe5d5+ Kg8g7
     23+	00:30	 176.387.783	5.768.000	+0.79	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Kg1f2 Bh3f5 Kf2g2 h7h6 h2h4 h6xg5 h4xg5 Bf5b1 Kg2f3 a3a2 Rd2h2 f7f6 Qe5d5+ Kg8g7
     23+	00:51	 300.794.359	5.851.000	+0.87	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Kg1h1 Bh3xd7 Bc6xd7 a3a2 Rd2xa2 Rd8xd7 h2h4 Rd7d1+ Kh1g2 Qf8c8 Qe5e4 Rd1d8 Qe4f3 Qc8d7 Ra2e2 Rd8b8 h4h5
     23	00:52	 306.068.766	5.840.000	+0.72	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Bc6b5 h7h6 Kg1f2 h6xg5 Qe5xg5 Bh3f5 Qg5f6 Bf5xd7 Bb5xd7 a3a2 Rd2xa2 Rd8xd7 Qf6c6 Qf8d6 Qc6xd6 Rd7xd6 h2h4 Kg8g7
     23	00:53	 308.646.573	5.825.000	+0.72	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Bc6b5 h7h6 Kg1f2 h6xg5 Qe5xg5 Bh3f5 Qg5f6 Bf5xd7 Bb5xd7 a3a2 Rd2xa2 Rd8xd7 Qf6c6 Qf8d6 Qc6xd6 Rd7xd6 h2h4 Kg8g7
     24-	01:07	 390.097.008	5.809.000	+0.64	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 Qd4e5 a4a3 Re1e2 Qe7f8 Re2d2 Be6h3 Bc6b5 h7h6 Kg1f2 h6xg5 Qe5xg5 Bh3f5 Qg5f6 Bf5xd7 Bb5xd7 a3a2 Rd2xa2 Rd8xd7 Qf6c6 Qf8d6 Qc6xd6 Rd7xd6 Ra2a4 Rd6d2+ Kf2g1 f7f5 Ra4xc4 Kg8f7 h2h4 Kf7e7 Rc4c6
     24	01:16	 444.786.097	5.846.000	+0.66	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4e5 Qa5xe5+ Re2xe5 Kg8f8 Re5b5 Rb8d8 Rb5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kf8e8 h4h5 Ke8d7 h5xg6 h7xg6 Kg4f4 Kd7c6 Ra3a6+ Kc6b5 Ra6a3 Kb5b6
     24	01:16	 445.076.704	5.843.000	+0.66	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4e5 Qa5xe5+ Re2xe5 Kg8f8 Re5b5 Rb8d8 Rb5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kf8e8 h4h5 Ke8d7 h5xg6 h7xg6 Kg4f4 Kd7c6 Ra3a6+ Kc6b5 Ra6a3 Kb5b6
     25	01:50	 642.420.924	5.857.000	+0.61	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4d6 Rb8f8 Qd6e5 Qa5xe5+ Re2xe5 Rf8d8 Re5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kg8f8 h4h5 Kf8e7 h5xg6 h7xg6 Kg4f4 Ke7e6 Ra3a6+ Ke6d5 Ra6a5+ Kd5d6
     25	01:53	 662.079.066	5.835.000	+0.61	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4d6 Rb8f8 Qd6e5 Qa5xe5+ Re2xe5 Rf8d8 Re5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kg8f8 h4h5 Kf8e7 h5xg6 h7xg6 Kg4f4 Ke7e6 Ra3a6+ Ke6d5 Ra6a5+ Kd5d6
     26	02:43	 936.763.284	5.746.000	+0.61	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4d6 Rb8f8 Qd6e5 Qa5xe5+ Re2xe5 Rf8d8 Re5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kg8f8 h4h5 Kf8e7 h5xg6 h7xg6 Kg4f4 Ke7e6 Ra3a6+ Ke6d5 Ra6a5+ Kd5d6
     26	02:50	 964.404.645	5.680.000	+0.61	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4d6 Rb8f8 Qd6e5 Qa5xe5+ Re2xe5 Rf8d8 Re5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kg8f8 h4h5 Kf8e7 h5xg6 h7xg6 Kg4f4 Ke7e6 Ra3a6+ Ke6d5 Ra6a5+ Kd5d6
     27	04:52	1.607.436.616	5.493.000	+0.61	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4d6 Rb8f8 Qd6e5 Qa5xe5+ Re2xe5 Rf8d8 Re5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kg8f8 h4h5 Kf8e7 h5xg6 h7xg6 Kg4f4 Ke7e6 Ra3a6+ Ke6d5 Ra6a5+ Kd5d6
     27	05:09	1.677.980.358	5.423.000	+0.61	Re8xe3 Qd2xe3 Qd6xa3 Qe3d4 a5a4 d5d6 Bf5e6 Bg2c6 Rf8d8 d6d7 Qa3e7 h2h4 a4a3 Re1e2 Rd8b8 Kg1g2 Qe7d8 Kg2g3 Qd8a5 Qd4d6 Rb8f8 Qd6e5 Qa5xe5+ Re2xe5 Rf8d8 Re5a5 Be6xd7 Bc6xd7 Rd8xd7 Ra5xa3 Rd7d3+ Kg3g4 Kg8f8 h4h5 Kf8e7 h5xg6 h7xg6 Kg4f4 Ke7e6 Ra3a6+ Ke6d5 Ra6a5+ Kd5d6
     28-	13:44	4.624.601,431	5.609.000	+0.53	Re8xe3 Qd2xe3
     28-	13:45	4.630.502,202	5.609.000	+0.45	Re8xe3 Qd2xe3
     28-	39:27	14.832.258,228	6.268.000	-5.39	Re8xe3 Qd2xe3
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Maharadja
Posts: 78
Joined: Thu Dec 24, 2009 1:22 pm

Re: How long until your chess engine sees this position is l

Post by Maharadja »

It's black to move and the eval is -5.39 isn't this indicating a win :?:
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BBauer
Posts: 658
Joined: Wed Mar 08, 2006 8:58 pm

Re: How long until your chess engine sees this position is l

Post by BBauer »

Actually it is indicating a loss. :D
Since there are not so much possibilities
a black loss is a white win, so you are right.
kind regards
Bernhard
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Maharadja
Posts: 78
Joined: Thu Dec 24, 2009 1:22 pm

Re: How long until your chess engine sees this position is l

Post by Maharadja »

I really don't get it, why is -5.39 a black los?
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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: How long until your chess engine sees this position is l

Post by zullil »

There are two possible ways to interpret the number.

If the score represents the evaluation of the position from the point-of-view of the player who has the move, then -5.39 indicates that Black (who has the move) is in trouble.

If the score represents the evaluation of the position from White's point-of-view (many programs do this), then -5.39 indicates that Black is doing very well.

I assume that the original post is using the first of these two systems.
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Maharadja
Posts: 78
Joined: Thu Dec 24, 2009 1:22 pm

Re: How long until your chess engine sees this position is l

Post by Maharadja »

I see, thanx for the clarification.
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User avatar
Eelco de Groot
Posts: 4662
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: How long until your chess engine sees this position is l

Post by Eelco de Groot »

Dann Corbit wrote:[d]4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -
With evaluation down a full piece, at least
But how does White win? There only is a fail low in Ivanhoe's output, that proves nothing :P Is there any independant analysis, another Rybka clone for all I care although that might have the same bugs..

[FEN "4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -"]

1... Rxe3 2. Qxe3 Qxa3 3. Qd4 a4 *

[d]5rk1/5p1p/6p1/3P1bP1/p1pQ4/q1P5/6BP/4R1K1 w - -

Engine: Rainbow Serpent 1.6.3s(dc) Build 97 (Athlon 2009 MHz, 128 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski Modifications: Dann Corbit

1.00 0:00 +0.56 4.Qxc4 (563)

2.00 0:00 +0.20 4.Qxc4 Rd8 5.Bf3 (611)

3.00 0:00 +0.24 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Re7 Rxb4 8.Ra7 Rf4 9.d6 Rd4 10.Kf2 Rxd6
11.Rxa4 h6 12.h4 f6 13.Ra8+ Kg7
14.Ra7+ Rd7 15.gxh6+ Kxh6 16.Rxd7 Bxd7
17.Bf3 (852)

4.00 0:00 -0.92 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Re7 Rxb4 8.Ra7 Kg7 9.Kf2 Rh4 10.h3 (3.084) 192

5.00 0:00 -1.01 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Re7 Rxb4 8.Ra7 Rf4 9.d6 Rd4 10.Kf2 Rxd6
11.Rxa4 Rd2+ 12.Kg3 (18.537) 597

6.00 0:00 -0.96 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Rxb4 8.Re8+ Kg7 9.Ra8 Rd4
10.Ke3 Rd3+ 11.Ke2 a3 12.d6 Rxd6
13.Rxa3 Rd4 14.Ra7 Be6 15.Bf3 Rh4 (50.351) 535

7.00 0:00 -1.01 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Rxb4 8.Re8+ Kg7 9.Ra8 Rd4
10.Ke3 Rd3+ 11.Kf4 Rd2 12.Kg3 Rd4
13.Kf2 h6 14.Ke3 Rd3+ 15.Ke2 (98.974) 575

8.00 0:00 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Rxb4 8.Re8+ Kg7 9.Ke3 h6
10.gxh6+ Kxh6 11.d6 Rb6 12.Rd8 Kg7
13.Bd5 Kf6 14.Kd4 Rb2 15.Kc5 Rxh2 (514.310) 587

9.00 0:01 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Ke3 Rd3+ 13.Ke2 Rb3
14.Rd4 f6 (925.902) 592

10.01 0:02 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Bf3 Rd2+ 13.Kg3 h6
14.h4 Rd3 15.Ra7 hxg5 16.hxg5 (1.316.959) 606

11.01 0:02 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Bf3 Rd2+ 13.Kg3 Be6
14.h4 f5 15.Kf4 Rd3 16.h5 gxh5
17.Bxh5 (1.798.340) 622

12.01 0:04 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Bf3 Rd2+ 13.Kg3 Be6
14.h4 f5 15.Kf4 Rd3 16.h5 gxh5
17.Bxh5 (2.541.365) 635

13.01 0:06 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Bf3 Rd2+ 13.Kg3 Rd3
14.Kf4 Bd7 15.Ra7 Be6 16.Ra1 h6
17.gxh6+ (4.230.910) 638

14.01 0:11 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Bf3 Rd2+ 13.Kg3 Bd7
14.Ra7 h6 15.h4 Rd4 16.Be4 Rxe4
17.Rxd7 (7.360.929) 640

15.01 0:26 -1.09 4.Qxc4 Qb3 5.Qb4 Qxb4 6.cxb4 Rb8
7.Kf2 Kf8 8.d6 Rxb4 9.Re7 Rd4 10.Ra7 Rxd6
11.Rxa4 Kg7 12.Bf3 Rd2+ 13.Kg3 Bd7
14.Ra7 h6 15.h4 Rd4 16.Be4 Rxe4
17.Rxd7 (16.835.192) 630

15.40 0:30 -0.88++ 4.d6 (18.844.409) 621

16.01 0:47 -0.80 4.d6 Be6 5.Bc6 Rd8 6.d7 Qe7 7.Qe5 a3
8.Re2 Qf8 9.Rd2 a2 10.Rxa2 Bxd7
11.Bxd7 Rxd7 12.Rb2 h5 13.Rb8 Rd8
14.Rxd8 Qxd8 15.Kf2 Qd3 16.Qe8+ Kg7
17.Qe5+ (29.204.040) 609

17.01 1:19 -0.84 4.d6 Be6 5.Bc6 Rd8 6.d7 Qe7 7.Qe5 a3
8.Re2 Qf8 9.Rd2 a2 10.Rxa2 Bxd7
11.Bxd7 Rxd7 12.Rb2 h5 13.Rb8 Rd8
14.Rxd8 Qxd8 15.Kf2 Qd3 16.Qe8+ Kg7
17.Qe5+ (46.906.825) 592

18.01 2:48 -1.05-- 4.d6 Be6 5.Bc6 Rd8 6.d7 Qe7 7.Qe5 a3
8.Re2 Qf8 9.Rd2 a2 10.Rxa2 Bxd7
11.Bxd7 Rxd7 12.Rb2 (98.306.870) 583

19.01 8:13 -1.09 4.d6 Be6 5.Bc6 Rd8 6.d7 Qe7 7.Qe5 a3
8.Re2 Qf8 9.Rd2 a2 10.Rxa2 Bxd7
11.Bxd7 Rxd7 12.Rb2 Rd8 13.Kf2 Qa3
14.Re2 Qa8 15.h4 Rd3 16.Qe8+ Qxe8
17.Rxe8+ (280.413.899) 567

20.01 15:13 -1.13 4.d6 Be6 5.Bc6 Rd8 6.d7 Qe7 7.Qe5 a3
8.Re2 Qf8 9.Rd2 a2 10.Rxa2 Bxd7
11.Bxd7 Rxd7 12.Rb2 Rd8 13.Rb4 Re8
14.Qc7 Rc8 15.Qf4 Qc5+ 16.Kg2 Qd5+
17.Kf2 (512.977.197) 561

21.01 29:03 -1.13 4.d6 Be6 5.Bc6 Rd8 6.d7 Qe7 7.Qe5 a3
8.Re2 Qf8 9.Rd2 a2 10.Rxa2 Bxd7
11.Bxd7 Rxd7 12.Rb2 Rd8 13.Rb4 Re8
14.Qc7 Rc8 15.Qe5 Rc5 16.Qg3 Rd5
17.Rb8 (996.465.505) 571

22.01 51:46 -1.33-- 4.d6 Be6 5.Rd1 Qb2 6.Rf1 Rd8 (1.746.661.531) 562

best move: d5-d6 time: 120:26.797 min n/s: 569.654 nodes: 4.116.780.235
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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zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: How long until your chess engine sees this position is l

Post by zullil »

Eelco de Groot wrote:
Dann Corbit wrote:[d]4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -
With evaluation down a full piece, at least
But how does White win?
After more than 3 hours and 100 billion nodes, Stockfish-1.6.3 (8 threads) is still favoring Black:

Code: Select all

Searching: 4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     -0.12   00:01      601 Rxe3 Qxe3 Qxa3 
 3     -0.08   00:01     1748 Rxe3 Rxe3 Rb8 a4 
 4     -0.08   00:01     2664 Rxe3 Rxe3 Rb8 a4 Rb1+ Re1 
 5     -0.32   00:01     5480 Rxe3 Qxe3 Qxa3 Qd4 Qa2 Re7 
 6     -0.08   00:01    11959 Rxe3 Rxe3 Rb8 a4 Rb1+ Re1 Qc5+ Kh1 Rxe1+ Qxe1 
 7     +0.20   00:01    34069 Rxe3 Rxe3 Rb8 Qd4 Rb1+ Kf2 Bd7 Re1 Rxe1 Kxe1 Qxh2 
 8     +0.20   00:01    37650 Rxe3 Rxe3 Rb8 Qd4 Rb1+ Kf2 Bd7 Re1 Rxe1 Kxe1 Qxh2 
 9  <  -0.08   00:01   100359 Rxe3 Qxe3 Qxa3 Qd4 Rc8 d6 Rd8 Bc6 Rxd6 Re8# 
10     +0.20   00:01   186022 Rxe3 Qxe3 Qxa3 Qd4 Rc8 d6 Rd8 Bc6 Be6 d7 a4 h4 
                              Qa2 Qb6 Rxd7 Qb8+ Kg7 Bxd7 Bxd7 
11     +0.40   00:01   888606 Rxe3 Qxe3 Qxa3 Qd4 Rc8 d6 Be6 Rd1 a4 Be4 Qb2 Rb1 
                              Qe2 Rb7 a3 
12     +0.28   00:01    1548k Rxe3 Qxe3 Qxa3 Qd4 Rc8 d6 Be6 Rd1 a4 Bb7 Rd8 Qb6 
                              Rd7 Bc6 Bg4 Bxd7 Bxd1 Qd4 
13     +0.48   00:01    2135k Rxe3 Qxe3 Qxa3 Qd4 Rc8 d6 Be6 Rd1 a4 Bb7 Rf8 Bc6 
                              Qb3 Be4 Qb5 h4 a3 Rb1 Qd7 
14     +0.20   00:02    3453k Rxe3 Qxe3 Qxa3 Qd4 Rc8 Bf1 a4 Bxc4 Qd6 Ba2 a3 Re2 
                              Qd8 Qe3 Qd7 c4 Qd6 Qd4 Qd8 Qf4 f6 
15     +0.65   00:03   14949k Rxe3 Qxe3 Qxa3 Bf1 a4 Bxc4 Bd7 Rf1 Rc8 Rf4 Qd6 
                              Qd4 Bf5 Rf2 Qe7 h4 Qe1+ Bf1 Rxc3 Qxa4 
16     +0.61   00:04   24328k Rxe3 Qxe3 Qxa3 Bf1 a4 Bxc4 Bd7 Kf2 Rc8 Qd4 Qd6 
                              Kg1 Qc5 Qxc5 Rxc5 Re7 Bf5 Ba2 Rxc3 d6 Rc1+ Kf2 
                              Rc2+ Re2 Kf8 Rxc2 Bxc2 
17     +0.12   00:06   37326k Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 h4 a3 
                              Re2 h6 gxh6 Qf8 Qf6 Kh7 Be4 Kxh6 Bxg6 Qc5+ Kf1 
                              Rxd7 
18     +0.85   00:09   57440k Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 h4 a3 
                              Qe5 a2 Ra1 Qf8 Rxa2 Bxd7 Be4 Bg4 Rf2 Rd1+ Rf1 Rd2 
                              Qf4 Qc5+ Kh1 Qd6 Qxf7+ Kh8 
19     +0.73   00:11   80412k Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 h4 a3 
                              Qe5 Qf8 Qc7 Qc5+ Kg2 Rxd7 Qb8+ Kg7 Bxd7 Bxd7 Qf4 
                              Kg8 Kg3 Be6 Ra1 Bf5 Ra2 
20     +0.81   00:20  153296k Rxe3 Qxe3 Qxa3 Bf1 a4 Bxc4 Bd7 Rb1 Rc8 Qd4 Qc5 
                              Qxc5 Rxc5 Rb7 Rxc4 Rxd7 Rxc3 Kf2 Kg7 Ke2 a3 Ra7 
                              Rc5 h4 Rxd5 Rxa3 Rd4 
21     +0.89   00:39  317709k Rxe3 Qxe3 Qxa3 Qd4 a4 Qxc4 Rc8 Qb4 Qxb4 cxb4 Rb8 
                              Re7 Rxb4 Ra7 Rf4 Bf1 Kg7 Bb5 Rd4 Be8 Rd1+ Kf2 
                              Rd2+ Ke3 Rxd5 Bxa4 Rd3+ Kf4 Rd4+ Ke5 
22     +0.97   00:54  448052k Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 Qe5 
                              a3 Re2 Qf8 Rd2 a2 Rxa2 Bxd7 Bxd7 Rxd7 Rb2 Rd8 Qc7 
                              Qd6 Qxd6 Rxd6 Rb4 Rd1+ Kf2 Rd2+ Ke3 Rxh2 Rxc4 h6 
                              gxh6 Rh3+ Kd4 Rxh6 Rc7 Kg7 
23     +0.93   01:14  622347k Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 Qe5 
                              a3 Re2 Qf8 Rd2 a2 Rxa2 Bxd7 Bxd7 Rxd7 Rb2 Rd8 Qc7 
                              Qd6 Qxd6 Rxd6 Rb4 Rd1+ Kf2 Rd2+ Kg1 Kg7 Rxc4 h6 
                              gxh6+ Kxh6 Rf4 f5 Rf2 Rd1+ Rf1 Rxf1+ Kxf1 Kg5 Ke2 
                              f4 
24  >  +1.13   02:56    1511M Rxe3 Rxe3 Qxa3 Bh3 Bxh3 Rxh3 Rd8 Kg2 
25     +1.13   06:22    3309M Rxe3 Qxe3 Qxa3 Qd4 a4 Qxc4 Qb3 Qb4 Qxb4 cxb4 Rb8 
                              Re7 Rxb4 Ra7 Rf4 Bf1 Kf8 d6 Rd4 Kf2 Rxd6 Rxa4 
                              Rd2+ Kg3 Be6 Ra7 Kg7 h4 Rb2 Bg2 Rb4 Bf3 h6 Be2 
26     +1.01   12:55    6743M Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 h4 a3 
                              Re2 Rb8 Kh2 Qd8 Kg3 Qa5 Qe5 Qxe5+ Rxe5 Kf8 Rb5 
                              Rd8 Ra5 Bxd7 Be4 f5 gxf6 Kf7 Rxa3 Kxf6 Kf4 Rf8 
                              Ra7 Ke6+ Ke3 
27     +1.05   26:17   13751M Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 h4 a3 
                              Re2 Rb8 Kh2 Qd8 Kg3 Qa5 Qe5 Qxe5+ Rxe5 Kf8 Rb5 
                              Rd8 Ra5 Bxd7 Bd5 Ke7 Rxa3 Be6 Be4 f5 gxf6+ Kxf6 
                              Kf4 Rd2 Ra7 Rd7 
28  <  +0.85   31:34   16542M Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 
29     +0.73   48:43   25461M Rxe3 Qxe3 Qxa3 Qd4 a4 d6 Be6 Bc6 Rd8 d7 Qe7 h4 a3 
                              Re2 Rb8 Kf2 Qd8 Kg3 Qa5 Qd6 Rf8 Qe5 Qxe5+ Rxe5 
                              Rd8 Ra5 Bxd7 Bd5 Kf8 Kf4 Ke7 Rxa3 Be6 Ra7+ Kd6 
                              Bf3 Kc5 
30     +1.05 3:18:45  103969M Rxe3 Qxe3 Qxa3 Qd4 Qd6 Qxc4 Bd7 Qd4 a4 Qf6 Qc5+ 
                              Qd4 Qxd4+ cxd4 Rb8 Kf2 Kf8 d6 Rb2+ Kg3 Rb6 Kf4 
                              Rxd6 d5 f6 h4 Kf7 Ke3 Rb6 Kd4 a3 Ra1 Rb4+ Kc5 Ra4 
                              Re1 a2 Ra1 f5 Bf1 f4 Bc4 f3 Rxa2 Rxa2 Bxa2
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rlsuth
Posts: 322
Joined: Wed Mar 08, 2006 9:37 pm

Re: How long until your chess engine sees this position is l

Post by rlsuth »

Dann Corbit wrote: 28- 39:27 14.832.258,228 6.268.000 -5.39 Re8xe3 Qd2xe3


I'm dubious that this is a valid score, tbh. Without the full line to verify, it could just be the result of incorrect pruning, couldn't it?
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Albert Silver
Posts: 3026
Joined: Wed Mar 08, 2006 9:57 pm
Location: Rio de Janeiro, Brazil

Re: How long until your chess engine sees this position is l

Post by Albert Silver »

zullil wrote:
Eelco de Groot wrote:
Dann Corbit wrote:[d]4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -
With evaluation down a full piece, at least
But how does White win?
After more than 3 hours and 100 billion nodes, Stockfish-1.6.3 (8 threads) is still favoring Black:

Code: Select all

Searching: 4rrk1/5p1p/3q2p1/p2P1bP1/2p5/P1P1R3/3Q2BP/4R1K1 b - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0

30     +1.05 3:18:45  103969M Rxe3 Qxe3 Qxa3 Qd4 Qd6 Qxc4 Bd7 Qd4 a4 Qf6 Qc5+ 
                              Qd4 Qxd4+ cxd4 Rb8 Kf2 Kf8 d6 Rb2+ Kg3 Rb6 Kf4 
                              Rxd6 d5 f6 h4 Kf7 Ke3 Rb6 Kd4 a3 Ra1 Rb4+ Kc5 Ra4 
                              Re1 a2 Ra1 f5 Bf1 f4 Bc4 f3 Rxa2 Rxa2 Bxa2
You mean it is favoring white.
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
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