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BT2630 position 15

Posted: Fri Dec 28, 2018 9:56 pm
by jdart


bm is supposed to be e5 but I am getting a score over +8 from Rf6+:

27 4.56 e5 +3.74 27132810
28 5.60 e5! +3.93 33318722
28 7.58 e5 +3.96 45187941
29 10.32 -- +3.77 61567701
29 11.33 e5 +3.98 67630954
30 16.79 e5 +3.94 98750692
31 18.21 e5! +4.12 106234313
31 21.28 e5! +4.50 122861537
31 28.90 e5 +5.20 166132356
32 36.90 e5 +5.34 214817493
33 43.69 e5! +5.53 251798851
33 53.64 e5 +5.63 306676397
34 61.69 e5 +5.48 353526637
35 69.13 e5! +5.67 396511375
35 91.22 e5! +6.05 518170176
35 103.87 e5 +5.90 595445947
36 119.00 e5! +6.09 679938888
36 139.46 e5 +6.04 805458716
37 163.11 e5! +6.23 939104029
37 226.39 e5! +6.60 1310208675
37 302.89 Rf6+ +6.73 1751212225
38 317.11 Rf6+! +6.91 1831945157
38 352.99 Rf6+! +7.29 2048721949
38 417.57 Rf6+ +7.30 2442736371
39 459.53 Rf6+! +7.48 2695740214
39 501.62 Rf6+ +7.48 2951861887
40 608.71 Rf6+! +7.67 3614559992
40 709.36 Rf6+! +8.05 4243830632
6.03M nodes/second.
20899 tablebase probes, 20899 tablebase hits
result: Rf6+ score: +8.05 ** not solved in 900 secs. (5431M nodes)
Rf6+ Kg7

Re: BT2630 position 15

Posted: Fri Dec 28, 2018 10:59 pm
by MikeB
jdart wrote:
Fri Dec 28, 2018 9:56 pm


bm is supposed to be e5 but I am getting a score over +8 from Rf6+:

27 4.56 e5 +3.74 27132810
28 5.60 e5! +3.93 33318722
28 7.58 e5 +3.96 45187941
29 10.32 -- +3.77 61567701
29 11.33 e5 +3.98 67630954
30 16.79 e5 +3.94 98750692
31 18.21 e5! +4.12 106234313
31 21.28 e5! +4.50 122861537
31 28.90 e5 +5.20 166132356
32 36.90 e5 +5.34 214817493
33 43.69 e5! +5.53 251798851
33 53.64 e5 +5.63 306676397
34 61.69 e5 +5.48 353526637
35 69.13 e5! +5.67 396511375
35 91.22 e5! +6.05 518170176
35 103.87 e5 +5.90 595445947
36 119.00 e5! +6.09 679938888
36 139.46 e5 +6.04 805458716
37 163.11 e5! +6.23 939104029
37 226.39 e5! +6.60 1310208675
37 302.89 Rf6+ +6.73 1751212225
38 317.11 Rf6+! +6.91 1831945157
38 352.99 Rf6+! +7.29 2048721949
38 417.57 Rf6+ +7.30 2442736371
39 459.53 Rf6+! +7.48 2695740214
39 501.62 Rf6+ +7.48 2951861887
40 608.71 Rf6+! +7.67 3614559992
40 709.36 Rf6+! +8.05 4243830632
6.03M nodes/second.
20899 tablebase probes, 20899 tablebase hits
result: Rf6+ score: +8.05 ** not solved in 900 secs. (5431M nodes)
Rf6+ Kg7
both moves look good to me...I prefer Rf6

Code: Select all

dep	score	nodes	time	(not shown:  tbhits	knps	seldep)
 40	+10.26 	16.3G	7:45.02	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Ne6 Nxh5+ Kf7 Ra8 Ke7 Rxa7+ Kd6 Rb7 e3 Rxb6+ Ke7 Kg2 e2 Kf2 Kf7 Rc6 Ke7 Nf4 Nd8 Rxc5 Kd6 Rc3 Nb7 Rc6+ Kd7 Nxe2 Nd8 Rc3 
 40	+10.21!	15.1G	7:13.20	Rf6+! 
 40	+10.11!	14.2G	6:48.38	Rf6+! 
 40	+10.05!	13.9G	6:42.55	Rf6+! 
 39	+9.99 	12.9G	6:12.54	e5 Qxe5 Re2 Bh3 Qe1 Bg4 Rxe5 dxe5 Qe4+ Kf7 Qxe5 Bg7 Qe7+ Kg8 Qe8+ Kh7 Qe4+ Kh8 Ne7 Nb3 Qa8+ Kh7 Qg8+ Kh6 Qf7 Kh7 Nf5 Bxf5 Qxf5+ Kg8 Qd5+ Kh8 Qd8+ Kh7 Qd3+ Kh6 Qxb3 Bf6 Qf3 Kg6 Qd3+ Kh6 Qe4 Bb2 Qe6+ Kh7 Qf7+ Kh8 Qxa7 Bg7 Qb8+ Kh7 
 39	+9.89!	11.2G	5:28.21	Rf6+! 
 39	+9.66!	9.48G	4:39.33	e5! 
 39	+9.48!	7.84G	3:52.98	Rf6+! 
 39	+9.35!	7.20G	3:34.98	e5! 
 39	+9.26!	7.14G	3:33.26	e5! 
 39	+9.19!	6.66G	3:19.39	e5! 
 38	+9.13 	5.69G	2:51.04	e5 Qxe5 Re2 Qd4 Ne7+ Kg7 Nxc8 Be3 Nxd6 Bg1+ Qxg1 Qxg1+ Kxg1 Kg6 Re7 Kf6 Re3 Kg7 Rf3 Kg6 Kg2 Kh6 Rf7 Kg6 Rxa7 Nb3 Kg1 Kf6 Ra6 Ke7 Rxb6 Na5 Ra6 Nb3 Rc6 Na5 Nf5+ Kf8 Rc8+ Kf7 Rxc5 Kg6 Nd6 Nb3 Rg5+ Kf6 Rxh5 
 38	+9.06!	5.22G	2:37.35	Rf6+! 
 38	+8.97!	4.87G	2:27.04	Rf6+! 
 38	+8.91!	4.70G	2:22.08	Rf6+! 
 37	+8.85!	4.21G	2:07.83	Rf6+! 
 37	+8.79!	3.90G	1:58.61	Rf6+! 
 36	+8.73 	3.50G	1:46.85	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Nf7 Nxh5+ Kg6 Nf4+ Kf5 h5 Kf6 Rc6+ Kg7 Kg2 Ne5 Re6 Nf3 Rg6+ Kh8 Nd5 Ne5 Re6 Nf7 Rxe4 Nh6 Re7 Ng4 Rxa7 Kg8 Rc7 Kh8 Nxb6  
 36	+8.70!	3.33G	1:41.91	Rf6+! 
 36	+8.61!	3.06G	1:34.04	Rf6+! 
 36	+8.55!	2.92G	1:29.85	Rf6+! 
 35	+8.48 	2.52G	1:17.86	Rf6+ Kg7 e5 dxe5 Qd3 Bd7 Nc7 Kxf6 Nxe8+ Bxe8 Qd6+ Kf5 Qxh6 Bf7 Qg7 Be6 Qh7+ Kf6 Qxh5 Nxc4 Qg5+ Kf7 h5 Nd6 Qxe5 Ke7 Qg7+ Nf7 h6 Bf5 h7 Bxh7 Qxh7 Kf6 Qh4+ Ke6 Qg4+ Ke5 Qg7+ Ke6 Qg6+ Ke7 Qe4+ Kf6 Qc6+ Ke5 Qe8+ Kf6 Qd7 Kg6 Qxa7 Kg7 
 35	+8.36!	2.23G	1:09.29	Rf6+! 
 35	+8.26!	2.12G	1:05.99	Rf6+! 
 35	+8.20!	1.99G	1:02.05	Rf6+! 
 34	+8.14 	1.78G	0:55.81	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Nf7 Nxh5+ Kg6 Nf4+ Kf6 Rc6+ Kf5 h5 e3 Rc7 Nh6 Kg2 c4 Rxa7 c3 Rc7 Kg4 Rc6 c2 Rxc2 Nf5 Rc4 Kg5 Rc6 Nd4 Rxb6 e2 Kf2 
 34	+8.08!	1.61G	0:50.66	Rf6+! 
 34	+8.02!	1.51G	0:47.88	Rf6+! 
 33	+7.95 	1.34G	0:42.79	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Nf7 Nxh5+ Kg6 Nf4+ Kf5 h5 e3 Rc7 Nh6 Kg2 Ke4 Rc6 e2 Nxe2 Nf7 h6 Kd3 Nf4+ Kc4 h7 Kb3 Rc7 Nh8 Rxa7 Kb2 Nd5 Ng6 
 33	+7.88!	1.22G	0:39.03	Rf6+! 
 33	+7.82!	1.06G	0:33.99	Rf6+! 
 32	+7.76 	983.0M	0:31.67	Rf6+ Kg7 e5 dxe5 Qd3 Bd7 Nc7 Kxf6 Nxe8+ Bxe8 Qd6+ Kg7 Qxe5+ Kf8 Qf6+ Bf7 Qxh6+ Ke8 Qd6 Nxc4 Qb8+ Ke7 Qxa7+ Ke6 a5 bxa5 b6 Nd6 b7 Nxb7 Qxb7 c4 Qc8+ Kf6 Qd8+ Ke6 Qxa5 Kf6 Qg5+ Ke6 Qf4 Ke7 Qc7+ Kf6 g4 Kg7 gxh5 
 32	+7.71!	864.3M	0:28.04	Rf6+! 
 32	+7.58!	768.4M	0:25.06	Rf6+! 
 32	+7.48!	726.6M	0:23.76	Rf6+! 
 32	+7.42!	670.6M	0:22.05	Rf6+! 
 31	+7.36 	605.2M	0:19.99	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Ne6 Nxh5+ Kg6 Nf4+ Kf5 Nxe6 Kxe6 Kg2 e3 Rc6+ Ke7 Kf1 c4 Rxc4 Kd6 Ke2 Kd7 Kf3 Kd8 Kxe3 Kd7 
 31	+7.23!	544.0M	0:18.10	Rf6+! 
 31	+7.10!	535.9M	0:17.84	Rf6+! 
 31	+7.01!	524.9M	0:17.50	Rf6+! 
 31	+6.95!	507.9M	0:16.96	Rf6+! 
 30	+6.88 	422.0M	0:14.24	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Kxf6 hxg5+ Kxg5 Kg2 Kf5 Rc7 Ke5 Rxa7 e3 Rb7 Kd4 Rxb6 c4 Rc6 Kd3 Kf3 e2 Rd6+ Kc2 Kxe2 Kb2 Rc6 h4 gxh4 
 29	+6.91 	356.6M	0:12.16	Rf6+ Kg7 e5 dxe5 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 Rxf8+ Kg7 Rxc8 Ne6 Nxh5+ Kg6 Nf4+ Kf5 Kg2 e3 Nxe6 Kxe6 Rc7 Kd5 Rxa7 Kc4 Kf3 Kd3 Rd7+ Kc4 Kxe3 Kb3 Ra7 Kc2 
 29	+6.75!	321.9M	0:11.04	Rf6+! 
 29	+6.62!	287.0M	0:09.93	e5! 
 29	+6.53!	279.4M	0:09.68	e5! 
 29	+6.46!	267.9M	0:09.32	e5! 
 28	+6.40 	246.2M	0:08.59	e5 dxe5 Rf6+ Kg7 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qd2 Nxc4 Qg5 Ne5 Rd8 Nf3+ Kh1 Nxg5 Rxe8+ Bf8 hxg5 Bf5 Rxf8+ Kg7 Rg8+ Kf7 Kg2 c4 Kf2 c3 Ra8 Kg6 Rxa7 Kxg5 Nd5 h4 gxh4+ Kxh4 
 28	+6.29!	238.3M	0:08.32	e5! 
 28	+6.11!	226.0M	0:07.90	Rf6+! 
 28	+5.98!	217.7M	0:07.62	Rf6+! 
 28	+5.89!	210.7M	0:07.38	e5! 
 28	+5.83!	207.4M	0:07.26	e5! 
 27	+5.76 	192.1M	0:06.73	e5 dxe5 Rf6+ Kg7 Qd3 e4 Qc3 Kh7 Rd6 Bg7 Nf6+ Kh8 Qe3 Qe7 Qg5 Bg4 Qg6 Bxf6 Rxf6 e3 Qh6+ Kg8 Rg6+ Kf7 Rg7+ Ke8 Rxe7+ Kxe7 Qxe3+ Kd8 Qh6 Kc7 Qg7+ Kb8 Kg2 Nb3 Qf8+ Kb7 Qf7+ Kb8 
 27	+5.72!	187.4M	0:06.56	Rf6+! 
 27	+5.48!	182.1M	0:06.38	Rf6+! 
 27	+5.31!	178.8M	0:06.26	Rf6+! 
 27	+5.18!	177.2M	0:06.21	Rf6+! 
 27	+5.08!	175.5M	0:06.15	Rf6+! 
 27	+5.02!	173.9M	0:06.09	Rf6+! 
 26	+4.96 	132.0M	0:04.65	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Bg4 Rh7+ Ke6 Nc3 Bf3 Kg1 e4 Kf2 Bg4 Nxe4 Bf5 Ng5+ Kd5 Rxa7 Bg4 Ra8 Kd4 Rh8 Kc3 h5 Kb4 h6 Kxa4 h7 Kxb5 
 26	+4.95!	118.3M	0:04.16	Rf6+! 
 26	+4.89!	103.0M	0:03.62	Rf6+! 
 25	+4.83 	79.9M  	0:02.82	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Nd6 Rxe5 Be6 Nc3 Nf5 Kg2 Kf6 Re2 Nd4 Re4 Bf5 Re8 Bg6 Nd5+ Kf7 Re7+ Kf8 Kf2 Bf7 Rd7 Be6 Rd8+ Kg7 Ne3 Nf5 Ra8 Nxe3 
 24	+4.62 	45.3M  	0:01.61	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Be6 Nc3 Kg6 Rg5+ Kh6 g4 Bf7 Kg3 Bg6 Nd5 Bf7 Nf6 Be6 Ne4 Bd5 Nc3 Bf7 Rf5 Bg6 Rf6 Kg7 Rc6 Bc2 Rc7+ Kg6 Rxa7 
 23	+4.50 	28.9M  	0:01.03	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 e4 Rh7+ Ke6 Nf4+ Kd6 h5 Ne5 h6 Ng4+ Kg2 c4 Rg7 Nxh6 Rg6+ Kc5 Rc6+ Kb4 Rxc8 e3 Kf3 Kxa4 Rxc4+ Kxb5 
 22	+4.35 	17.3M  	0:00.63	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Ke6 Nc3 Ne3 Rh7 Bd7 Rg7 Nf5 Rg8 Ne3 Ra8 Nd5 Nxd5 Kxd5 Rxa7 Be8 a5 bxa5 b6 Kc6 b7 Kc7 
 21	+4.23 	10.7M  	0:00.39	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Nd6 Rxe5 Be6 Nc3 Nf5 Kg2 Kf6 Re1 Nd4 Kf2 Bg8 g4 Be6 Kg3 
 20	+4.19 	9.01M  	0:00.32	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Bg4 Rh7+ Ke6 Nc3 Bf3 Kg1 e4 Kf2 Kf5 Rf7+ Ke5 Rxa7 Kd4 Ne2+ Bxe2 Kxe2 
 19	+4.02 	5.48M  	0:00.20	Rf6+ Kg7 e5 dxe5 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Bg4 Rh7+ Ke6 Ne3 Be2 Rxa7 Nxc4 Nxc4 Bxc4 Rb7 e4 Rxb6+ Kd5 Kg2 Kd4 Rd6+ Bd5 b6 Ke5 Rd7 
 18	+3.95 	2.96M  	0:00.11	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Ke6 Nc3 a6 bxa6 Bxa6 g4 Nd6 Rh6+ Kd7 Kg3 b5 axb5 Bxb5 
 17	+3.82 	1.32M  	0:00.05	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Kg6 Rg5+ Kf7 h5 Bb7 Nc3 Nd2 Kh3 Ne4 Nxe4 Bxe4 
 16	+3.67 	904319	0:00.03	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Be6 Nc3 Kg6 g4 Kf7 Kg3 Ne3 Rg5 Nxg4 Rxg4 
 15	+3.65 	745358	0:00.03	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Be6 Nc3 Kg6 g4 
 14	+3.44 	465413	0:00.02	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Bg4 Rh7+ Ke6 Nc3 Bf5 Rxa7 e4 Ne2 Kd5 Rf7 Be6 
 13	+3.47 	318484	0:00.01	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Bg4 Rh7+ Kg6 Rxa7 Nxc4 
 12	+3.19 	222876	0:00.01	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rxh5 Be6 
 11	+3.03 	214648	0:00.01	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Bg4 Ne3 Kg7 Rd6 Be2 Rd7+ Kh6 Re7 Nxc4 Nxc4 Bxc4 
 10	+3.07 	94206  	0:00.00	e5 dxe5 Rf6+ Kg7 Rd6 Qf7 Qxf7+ Kxf7 Rxh6 Nxc4 Rh7+ Kg6 
  9	+2.93 	75507  	0:00.00	Rf6+ Kg7 Rxd6 Qe5 Rd8 Be6 Ra8 Kg6 Rxa7 
  8	+2.89 	62949  	0:00.00	Rf6+ Kg7 Rxd6 Qe5 Rd8 Be6 Ra8 Kg6 
  7	+2.89 	41772  	0:00.00	Rf6+ Kg7 Rxd6 Qe5 
  6	+2.49 	21673  	0:00.00	e5 dxe5 Rf6+ Kg7 Rd6 
  5	+0.49 	17164  	0:00.00	Kg1 Kg7 Rf6 Be6 Rf3 
  4	+0.44 	13857  	0:00.00	Nf6 Qe5 Nd5 Nb3 Rf6+ Kg7 
  3	+0.84 	6239    	0:00.00	Qa1 Nxc4 Rf1 
  2	+7.68 	2706    	0:00.00	Nf6 d5 
  1	+7.61 	1254    	0:00.00	Nf6 
  0	#

Re: BT2630 position 15

Posted: Fri Dec 28, 2018 11:43 pm
by Eelco de Groot
Hi jon and Mike, as far as I can see both moves are interchangeable in what order they are played; transposing


-

Engine: Kaissa IV search 041 (one thread, i7 6700, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott

48 59:01 +12.42 1.Rf6+ Kg7 2.e5 dxe5 3.Qd3 e4 4.Qc3 Kh7
5.Rd6 Bg7 6.Nf6+ Kh8 7.Qc1 Qe7 8.Qg5 Bg4
9.Qg6 Bxf6 10.Rxf6 e3 11.Qh6+ Kg8
12.Rg6+ Kf7 13.Rg7+ Ke8 14.Rxe7+ (9.391.470.506) 2652

48 59:01 +12.42 1.e5 dxe5 2.Rf6+ Kg7 3.Qd3 e4 4.Qc3 Kh7
5.Rd6 Bg7 6.Nf6+ Kh8 7.Qc1 Qe7 8.Qg5 Bg4
9.Qg6 Bxf6 10.Rxf6 e3 11.Qh6+ Kg8
12.Rg6+ Kf7 13.Rg7+ Ke8 14.Rxe7+ (9.391.470.506) 2652

Re: BT2630 position 15

Posted: Sat Dec 29, 2018 12:07 am
by whereagles
this is kasparov-karpov 1987 right?

Re: BT2630 position 15

Posted: Sat Dec 29, 2018 12:20 am
by Dann Corbit
whereagles wrote:
Sat Dec 29, 2018 12:07 am
this is kasparov-karpov 1987 right?
Right:

2b1q3/p7/1p1p2kb/nPpN3p/P1P1P2P/6P1/5R1K/5Q2 w - - bm e5; id "BT2630.15"; c0 "Kasparov-Karpov";

Re: BT2630 position 15

Posted: Sat Dec 29, 2018 9:31 am
by whereagles
that game was predecessor to engine games.. it featured a lot of high level shuffling :D

Re: BT2630 position 15

Posted: Sat Dec 29, 2018 11:00 am
by Mike S.
Stockfish 10 confirms that the choice between 1.Rf6+ and 1.e5 is very close:

i7 7700HQ 3.4 GHz
1024 GB Hashtables
3 threads (cores)
5-men Syzygy EGTBs


Analysis by Stockfish 10 64 BMI2 MultiPV(3):

1. +- (9.71): 1.Rf6+ Kg7 2.e5 dxe5 3.Qd3 e4 4.Qc3 Kh7 5.Rd6 Bg7 6.Nf6+ Kh8 7.Qc1 Qe7 8.Qg5 Bg4 9.Qg6 Bxf6 10.Rxf6 e3 11.Qh6+ Kg8 12.Rg6+ Kf7 13.Rg7+ Ke8 14.Qg6+ Kd8 15.Qd3+ Qd7 16.Rxd7+ Bxd7 17.Qxe3 Bg4 18.Qe4 Kd7 19.Qd5+ Ke7 20.Qe5+ Kd7 21.Qg7+ Kd6 22.Qf7 Be6 23.Qxh5 Nxc4 24.Qg5 Ne5 25.Qd8+ Nd7 26.h5 Bf5 27.h6 Bc2 28.Qg5 Ne5 29.Qg7 Ke6 30.h7 Nf7 31.Qg8 Ke7 32.Qxf7+ Kxf7 33.h8Q Ke7 34.Qc3

2. +- (9.68): 1.e5 dxe5 2.Rf6+ Kg7 3.Qd3 e4 4.Qc3 Kh7 5.Rd6 Bg7 6.Nf6+ Kh8 7.Qc1 Qe7 8.Qg5 Bg4 9.Qg6 Bxf6 10.Rxf6 e3 11.Qh6+ Kg8 12.Rg6+ Kf7 13.Rg7+ Ke8 14.Qg6+ Kd8 15.Qd3+ Qd7 16.Rxd7+ Bxd7 17.Qxe3 Bg4 18.Qe4 Kd7 19.Qd5+ Ke7 20.Qe5+ Kd7 21.Qg7+ Kd6 22.Qf7 Be6 23.Qxh5 Nxc4 24.Qg5 Ne5 25.Qd8+ Nd7 26.h5 Bf5 27.h6 Bd3 28.Qh8 Kc7 29.h7 c4 30.Qg8 Bxh7 31.Qxh7 c3 32.Kg2 Kc8 33.Qd3 c2 34.Qxc2+ Nc5

3. +- (1.66): 1.Rf3 Bg4 2.Rf6+ Kg7 3.Rxd6 Qe5 4.Rd8 Kg6 5.Ra8 Qb2+ 6.Kh1 Bg7 7.Rxa7 Bf6 8.Nf4+ Kh6 9.Ng2 Qa1 10.Qxa1 Bxa1 11.Ne3 Bf3+ 12.Kh2 Bd4 13.Nf5+ Kg6 14.Nxd4 cxd4 15.c5 Kf6 16.cxb6 d3 17.b7 Nxb7 18.Rxb7 Bg4 19.e5+ Kxe5 20.Re7+ Kf6 21.Re1 d2 22.Rf1+ Ke5 23.a5 d1Q 24.Rxd1 Bxd1 25.a6 Be2 26.a7 Bf3 27.b6 Kf5 28.Kg1 Bb7 29.Kf2 Ke6 30.Kf1

Re: BT2630 position 15

Posted: Sun Dec 30, 2018 2:16 pm
by Mike S.
Mike S. wrote:
Sat Dec 29, 2018 11:00 am
1. +- (9.71): 1.Rf6+ Kg7 2.e5 dxe5 3.Qd3 ...

2. +- (9.68): 1.e5 dxe5 2.Rf6+ Kg7 3.Qd3 ...

3. +- (1.66): 1.Rf3 ...
:roll: I had missed totally that it is just a transposition!

Re: BT2630 position 15

Posted: Sun Dec 30, 2018 2:57 pm
by zullil
Mike S. wrote:
Sun Dec 30, 2018 2:16 pm
Mike S. wrote:
Sat Dec 29, 2018 11:00 am
1. +- (9.71): 1.Rf6+ Kg7 2.e5 dxe5 3.Qd3 ...

2. +- (9.68): 1.e5 dxe5 2.Rf6+ Kg7 3.Qd3 ...

3. +- (1.66): 1.Rf3 ...
:roll: I had missed totally that it is just a transposition!
See also Eelco's post above. :wink:

Re: BT2630 position 15

Posted: Sun Dec 30, 2018 3:36 pm
by Spliffjiffer
the good old BTx-testsuites...still good for testing Leela imo :-)...not the only questionable testposition in this suite...an other one (beyond others) is No.4:
[d]5r1k/1P4pp/3P1p2/4p3/1P5P/3q2P1/Q2b2K1/B3R3 w - - 0 1
bm Qf7
...well thats probably correct but is it winning ?
i analysed this position long time ago and came to the conclusion that its just a draw !?
has this been discussed already somewhere ?