Middlegame positional test-suite

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Dann Corbit
Posts: 9849
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: Middlegame positional test-suite

Post by Dann Corbit » Tue Apr 23, 2019 6:17 pm

Vinvin wrote:
Wed Apr 17, 2019 11:24 pm
Dann Corbit wrote:
Tue Apr 16, 2019 6:50 pm
...

Stockfish finds this for me in about a minute using ten threads. It pretty well sticks with it and seems to be clearly best.
acd 40; acs 433; bm a4; c3 "a4"; cce 0; ce 45; id "midgames.210"; pm a4; pv a4 Raa8 Kf1 h5 Rc2 a5 Nf4 Nd6 Nd3 Rc8 Rac1 Rxc2 Rxc2 Rc8 Bd1 Rxc2 Bxc2 Nd7 Ke2 f5 Be1 Be7 f3 g5 Kd2 Kf7 Bd1 h4 Kc2 Bf6 f4 Ne4 Bh5+ Kf8 b4 axb4 Kb3 Be7 fxg5 Bxg5 Nf4 Bxf4 exf4 Ndf6 Be2 Ng3 Bb5;
Results on my 6*4GHz on 3 runs : 13m56s, 11m32s, 12m5s

Code: Select all

FEN: 1r3bk1/rnR2p1p/pp2pnp1/3p4/3P4/1P2PB1P/P2BNPP1/R5K1 w - - 0 1

Stockfish_190305_x64_modern:
Found 511 tablebases
...
 34/41+	01:01	 500 206 290	8 130 659	+0,62	1.Rc6
 34/53	01:09	 560 269 805	8 087 152	+0,48	1.Rc6 b5 2.Nf4 Nd8 3.Rc2 a5 4.Be2 a4 5.Rb1 axb3 6.axb3 Ne4 7.Be1 b4 8.Nd3 Ra3 9.h4 Nb7 10.Nxb4 Na5 11.Nd3 Rbxb3 12.Rxb3 Nxb3 13.g4 Kg7 14.Kg2 Ra1 15.g5 Na5 16.Bb4 Bxb4 17.Nxb4 Nd6 18.Rc5 Nac4 19.Rc6
 35/45+	01:12	 589 170 520	8 093 891	+0,57	1.Nf4
 35/45+	01:13	 591 412 171	8 096 656	+0,67	1.Nf4
 35/45	01:18	 632 569 824	8 093 371	+0,61	1.Nf4 a5 2.a4 Ne8 3.Rc6 Nd8 4.Rcc1 Rbb7 5.e4 dxe4 6.Bxe4 Rd7 7.Be3 Nd6 8.Bd3 Nf5 9.Bxf5 exf5 10.Rc8 Rac7 11.Nd5 Rxc8 12.Nf6+ Kg7 13.Nxd7 Rc3 14.Rb1 Bd6 15.Nxb6 Rd3 16.Nc4 Bc7 17.Ne5 Bxe5 18.dxe5 Rd5 19.f4 Rd3 20.Kf2 Ne6
 36/45+	01:21	 658 765 417	8 104 690	+0,70	1.Nf4
 36/53	01:33	 761 006 777	8 154 809	+0,55	1.Nf4 Raa8 2.Nd3 Ba3 3.Bc1 Bf8 4.Ne5 Nd6 5.Rc6 b5 6.Ba3 b4 7.Bb2 Nf5 8.g4 Ne7 9.Rc7 Ne8 10.Rcc1 a5 11.Nd7 Rb7 12.Nc5 Rc7 13.Be2 Nc6 14.Kg2 Nd6 15.Rc2 Ne7 16.Rac1 Rac8 17.f3 h5 18.gxh5 gxh5
 37/43+	01:41	 825 418 286	8 155 340	+0,64	1.Nf4
 37/50+	01:42	 837 674 501	8 161 923	+0,74	1.Nf4
 37/54	02:17	1 133 501 835	8 219 499	+0,47	1.Nf4 Ne8 2.Rc6 Nd8 3.Rc2 a5 4.a4 Rbb7 5.e4 dxe4 6.Bxe4 Rc7 7.Rac1 Rxc2 8.Rxc2 Rc7 9.Rxc7 Nxc7 10.g4 Bd6 11.Kf1 Kf8 12.Ke2 Ke7 13.Kd3 Kd7 14.Kc4 f5 15.Bg2 Bxf4 16.Bxf4 Nf7 17.gxf5 gxf5 18.h4 Nd6+ 19.Kc3 Ne4+ 20.Bxe4 fxe4 21.Bxc7 Kxc7 22.Kd2 Kd6 23.Ke3 Kd5 24.h5 h6
 38/49	02:46	1 364 854 912	8 218 848	+0,45	1.Nf4 Ne8 2.Rc2 a5 3.a4 Nbd6 4.Rc6 Nc8 5.Rcc1 Ne7 6.Bg4 Rc7 7.Rxc7 Nxc7 8.Rc1 Ne8 9.Kf1 Nd6 10.Be2 Rc8 11.Rxc8 Nexc8 12.g4 Bh6 13.Nd3 f6 14.Bd1 Ne7 15.h4 Nc6 16.b4 axb4 17.Nxb4 Na5 18.Ke2 Nac4 19.Bc3 Kf7 20.Be1 Bf8
 39/53+	03:29	1 698 050 681	8 113 231	+0,54	1.Nf4
 39/53	03:57	1 921 915 655	8 089 142	+0,54	1.Nf4 Ne8 2.Rc2 a5 3.a4 Nbd6 4.Bd1 Rc8 5.Rac1 Rac7 6.Kf1 Nb7 7.Nd3 Rxc2 8.Rxc2 Rxc2 9.Bxc2 f6 10.Ke2 Kf7 11.f3 Nd8 12.b4 Nc6 13.b5 Nb4 14.Bd1 Nxd3 15.Kxd3 f5 16.e4 fxe4+ 17.fxe4 dxe4+ 18.Kxe4 Nf6+ 19.Kd3 Nd5 20.Bf3 Bd6 21.Bg5 Be7 22.Bxe7 Kxe7 23.Bxd5 exd5 24.g4 Kd6
 40/53	04:54	2 378 673 851	8 088 361	+0,52	1.Nf4 Ne8 2.Rc2 a5 3.a4 Nbd6 4.Bd1 Rc8 5.Rac1 Rac7 6.Kf1 Nb7 7.Nd3 f6 8.Ke2 Rxc2 9.Rxc2 Ned6 10.Rxc8 Nxc8 11.f3 Kf7 12.Be1 Nd8 13.b4 axb4 14.Nxb4 Bxb4 15.Bxb4 Nc6 16.Bc3 Nd6 17.Bc2 h5 18.Be1 f5 19.g4 hxg4 20.fxg4 fxg4 21.hxg4 g5 22.Kf3 Nc4
 41/52	06:19	3 020 922 379	7 962 640	+0,54	1.Nf4 Ne8 2.Rc2 a5 3.a4 Nbd6 4.Bd1 Rc8 5.Rac1 Rac7 6.Kf1 Rxc2 7.Rxc2 Rxc2 8.Bxc2 Nc8 9.Nd3 Ned6 10.Ke2 f6 11.Be1 Kf7 12.f3 Ne7 13.b4 Nc4 14.bxa5 Nxa5 15.Nb4 h5 16.Bd3 Bh6 17.Bf2 Nc4 18.f4 g5 19.fxg5 fxg5 20.e4 Nb2 21.exd5 Nxd5
 42/58	07:59	3 802 534 363	7 927 165	+0,49	1.a4 Raa8 2.g4 Na5 3.Rb1 Bd6 4.Rc2 Rc8 5.Rxc8+ Rxc8 6.Bxa5 bxa5 7.Rc1 Rxc1+ 8.Nxc1 Kg7 9.Kg2 h6 10.Be2 Ne4 11.f3 Nc3 12.Kf2 Ba3 13.Nd3 Na2 14.Ne5 Nc1 15.Bxa6 Nxb3 16.Nc6 Bd6 17.Ke2 Nc1+ 18.Kd1 Na2 19.Bb5 Bc7 20.Kc2 Nb4+ 21.Nxb4 axb4 22.Kb3 Kf6 23.h4 Ke7 24.Bd3 Bd8 25.e4 Kd7
 43/57	08:27	4 027 316 193	7 942 406	+0,53	1.a4 Raa8 2.g4 Na5 3.Rb1 Rc8 4.Rxc8 Rxc8 5.Bxa5 bxa5 6.Rc1 Rb8 7.Rc3 Rb6 8.Nf4 g5 9.Nd3 Bd6 10.Rc8+ Kg7 11.Bd1 Ng8 12.Kf1 Ne7 13.Ra8 Ng6 14.Re8 Rc6 15.Ke2 h6 16.Ra8 Kf6 17.Ra7 Kg7 18.Kd2 Ba3 19.Rb7 Kf6 20.Be2 Bd6 21.Ra7 Ba3 22.f4 gxf4 23.exf4 Nxf4 24.Ne5 Bc1+ 25.Kd1 Rc3 26.Rxf7+ Kg5
 44/51	09:19	4 414 192 003	7 885 315	+0,53	1.a4 Raa8 2.g4 Na5 3.Rb1 Rc8 4.Rxc8 Rxc8 5.Bxa5 bxa5 6.Rc1 Rb8 7.Rc3 Rb6 8.Nf4 g5 9.Nd3 Bd6 10.Rc8+ Kg7 11.Bd1 Ng8 12.Kf1 Ne7 13.Ra8 Ng6 14.Re8 Rc6 15.Ke2 h6 16.Ra8 Kf6 17.Ra7 Kg7 18.Kd2 Ba3 19.Rb7 Kf6 20.Be2 Bd6 21.Rd7 Rb6 22.Kc2 Ba3 23.Ra7 Rc6+ 24.Kd2 Bd6 25.Ra8 e5
 45/57-	11:56	5 645 980 559	7 882 420	+0,44	1.a4 Raa8
 45/58+	12:24	5 872 639 491	7 890 522	+0,53	1.Nf4
 45/58	13:56	6 612 424 788	7 905 712	+0,44	1.a4 Raa8 2.g4 Na5 3.Rb1 Rc8 4.Rxc8 Rxc8 5.Bxa5 bxa5 6.Rc1 Rb8 7.Rc3 Rb6 8.Nf4 g5 9.Nd3 Bd6 10.Bd1 Kg7 11.Rc8 Ng8 12.Kg2 Ne7 13.Ra8 h6 14.Ra7 Ng6 15.Kf3 Rc6 16.Ke2 Rb6 17.Ra8 Kf6 18.Rc8 Ne7 19.Rd8 Ng6 20.Kd2 Rc6 21.Bf3 Rb6 22.Ra8 Rxb3 23.Rxa6 Bb4+ 24.Nxb4 axb4 25.Bxd5
 46/57	15:25	7 354 409 540	7 946 701	+0,44	1.a4 Raa8 2.g4 Na5 3.Rb1 Rc8 4.Rxc8 Rxc8 5.Bxa5 bxa5 6.Rc1 Rb8 7.Rc3 Rb6 8.Nf4 g5 9.Nd3 Bd6 10.Bd1 Kg7 11.Rc8 Ng8 12.Kg2 Ne7 13.Ra8 h6 14.Ra7 Ng6 15.Kf3 Rc6 16.Ke2 Rb6 17.Ra8 Kf6 18.Rc8 Ne7 19.Rd8 Ng6 20.Kd2 Rc6 21.Bf3 Rb6 22.Ra8 Rxb3 23.Rxa6 Bb4+ 24.Nxb4 axb4 25.Bxd5 Rb2+ 26.Kd3
 47/57+	17:21	8 308 733 148	7 976 947	+0,53	1.a4
 47/64	27:47	13 411 358 668	8 043 517	+0,56	1.a4 Raa8 2.g4 Na5 3.Rb1 Rc8 4.Rxc8 Rxc8 5.Bxa5 bxa5 6.Rc1 Rb8 7.Rc3 Rb6 8.Nf4 g5 9.Nd3 Bd6 10.Rc8+ Kg7 11.Bd1 Ng8 12.Kg2 Ne7 13.Ra8 Rc6 14.Kf1 Kf6 15.Ke1 Ng6 16.Be2 h6 17.Kd1 Ne7 18.Kd2 Ng6 19.Bf3 Kg7 20.Bd1 e5 21.Nxe5 Nxe5 22.dxe5 Bxe5 23.Rd8 Rd6 24.Rxd6
 48/63-	30:04	14 533 828 124	8 052 946	+0,46	1.a4 Raa8
 48/63+	33:05	16 005 928 756	8 059 724	+0,56	1.a4

-------------------------------------------------------------------------------------------------------------------

Stockfish_190305_x64_modern:
Found 511 tablebases
...
 37/56	03:19	1 629 755 037	8 166 087	+0,47	1.g4 Raa8 2.Rc2 Nd6 3.a4 a5 4.Be1 Rc8 5.Rac1 Rxc2 6.Rxc2 Rc8 7.Rxc8 Nxc8 8.Bg2 Ne7 9.f3 Ne8 10.Nc3 Nc6 11.Bf1 Nb4 12.Bh4 Nc2 13.Bd8 Bb4 14.Nb5 Nxe3 15.Kf2 Nxf1 16.Kxf1 Kf8 17.Bxb6 h5 18.gxh5 gxh5 19.Ke2 Ke7 20.Bc5+ Bxc5
 38/49	03:30	1 722 469 158	8 176 652	+0,52	1.g4 Raa8 2.Rc2 Nd6 3.a4 a5 4.Be1 Rc8 5.Rac1 Rxc2 6.Rxc2 Rc8 7.Rxc8 Nxc8 8.Bg2 Ne7 9.f3 Nc6 10.Kf1 Ne8 11.Bf2 Nb4 12.Nc1 Bd6 13.Ke2 Kf8 14.Kd2 h5 15.gxh5 gxh5 16.Bf1 Be7 17.Nd3 Nd6 18.Nxb4 axb4 19.Kc2 Nf5 20.Bd3 Ke8 21.Bxf5
 39/51	03:56	1 933 673 806	8 188 848	+0,46	1.g4 Raa8 2.Rc2 Nd6 3.a4 a5 4.Be1 Rc8 5.Rac1 Rxc2 6.Rxc2 Rc8 7.Rxc8 Nxc8 8.Bg2 Ne7 9.f3 Nc6 10.Nc3 Bb4 11.Kf2 Ne8 12.Bf1 Nd6 13.Ke2 Bxc3 14.Bxc3 f6 15.Be1 Kf7 16.Bg3 Ke7 17.Kf2 h5 18.gxh5 gxh5 19.Bd3 Nb4 20.Bb5 Nxb5 21.axb5 Kf7
 40/51+	04:27	2 187 591 283	8 184 612	+0,56	1.Nf4
 40/53	05:27	2 679 858 276	8 172 716	+0,38	1.g4 Raa8 2.Rc2 Nd6 3.a4 a5 4.Be1 Rc8 5.Rac1 Rxc2 6.Rxc2 Rc8 7.Rxc8 Nxc8 8.Kg2 Kg7 9.Nc1 Ne7 10.Be2 Nc6 11.Nd3 Bd6 12.f3 h6 13.Bc3 Nd7 14.Kf2 f5 15.Ne1 Nf6 16.Bb5 Na7 17.Ba6 Nc6 18.Nd3 Kf7 19.Ke2 fxg4 20.hxg4 h5 21.g5 Nd7 22.Be1
 41/51+	05:31	2 710 239 886	8 172 875	+0,47	1.g4
 41/57	07:31	3 719 488 165	8 236 080	+0,46	1.Nf4 Ba3 2.Bc1 Bf8 3.Nd3 a5 4.a4 Ne8 5.Rc3 Nbd6 6.Rc6 Rc7 7.Rxc7 Nxc7 8.Ba3 Nce8 9.Rc1 Rc8 10.Kf1 Rxc1+ 11.Bxc1 f6 12.g4 Kf7 13.Ke2 Nc8 14.e4 dxe4 15.Bxe4 Bd6 16.d5 Nc7 17.dxe6+ Kxe6 18.Nf4+ Bxf4 19.Bxf4 Nd6 20.Bc6 Nd5 21.Bxd5+ Kxd5 22.Be3 b5 23.axb5 Nxb5 24.Kd3 g5 25.Bd2 Nd4
 42/52+	07:43	3 822 833 266	8 251 793	+0,56	1.Nf4
 42/53	08:30	4 218 854 332	8 263 837	+0,53	1.Nf4 Ba3 2.Bc1 Bf8 3.Nd3 Raa8 4.Ne5 Nd6 5.Be2 a5 6.Bb2 a4 7.Rac1 b5 8.R1c2 b4 9.f3 Nfe8 10.R7c6 Be7 11.Bc1 axb3 12.axb3 Ra1 13.Kf2 Rba8 14.Nd3 Rb1 15.Rb2 Rba1 16.g3 Nb5 17.Bd2 Nc3 18.Bxc3 bxc3 19.Rxc3 R1a3 20.Rc6 Nd6 21.Nc5 Nf5 22.f4 Bxc5
 43/56-	09:23	4 665 204 808	8 278 083	+0,44	1.Nf4 Ne8
 43/63+	11:32	5 779 792 553	8 345 620	+0,53	1.a4
 43/63	14:40	7 377 874 008	8 374 802	+0,46	1.a4 Raa8 2.Be1 a5 3.g4 Nd6 4.Rc6 Nd7 5.Kg2 Rc8 6.Rac1 Rxc6 7.Rxc6 Rc8 8.Rxc8 Nxc8 9.e4 dxe4 10.Bxe4 Nf6 11.Kf3 Ne7 12.Bb7 h5 13.Bd2 Bg7 14.Bf4 hxg4+ 15.hxg4 Nfd5 16.Bd6 f5 17.g5 Kf7 18.Be5 Bxe5 19.dxe5 Nb4 20.Ke3 Nbd5+ 21.Bxd5 Nxd5+ 22.Kd4 Ke8 23.Kc4 Kd7 24.Nd4 Nc7
 44/58	15:50	7 970 489 154	8 387 207	+0,47	1.a4 Raa8 2.Be1 a5 3.g4 Nd6 4.Nf4 Rc8 5.Rac1 Rxc7 6.Rxc7 Rc8 7.Rc3 Nd7 8.Kf1 Rxc3 9.Bxc3 Be7 10.Bg2 Nb8 11.Ke2 Nc6 12.f3 Ne8 13.Be1 Nd6 14.Kd3 Ne8 15.Bf2 Kf8 16.Ke2 Nc7 17.h4 Nb4 18.e4 Ke8 19.Nd3 Nxd3 20.Kxd3 h6 21.Ke3 b5 22.Bf1 bxa4 23.bxa4 Kd7
 45/61	17:25	8 778 522 288	8 397 952	+0,48	1.a4 Raa8 2.Be1 a5 3.g4 Nd6 4.Nf4 Rc8 5.Rxc8 Rxc8 6.Be2 Nd7 7.Kf1 Be7 8.Ba6 Rc2 9.Bd3 Rb2 10.Rb1 Rxb1 11.Bxb1 Nb8 12.f3 Nc6 13.Ke2 Kf8 14.Bd3 Ne8 15.Bb5 Na7 16.Ba6 Nc6 17.Nd3 Nd6 18.Bg3 h5 19.Ne5 Nb4 20.Bd3 hxg4 21.hxg4 Ke8 22.e4 Nxd3 23.Kxd3 dxe4+ 24.fxe4 f5
 46/62+	19:19	9 668 342 929	8 338 991	+0,58	1.a4
 46/62	22:35	11 274 034 542	8 315 858	+0,52	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Ned6 4.Nf4 Rc8 5.Rac1 Rxc2 6.Rxc2 Rc8 7.Rxc8 Nxc8 8.Be2 a5 9.f3 Nd8 10.Ba6 Nd6 11.g4 Be7 12.Kf1 Kf8 13.Ke2 Ke8 14.Nd3 Kd7 15.h4 f6 16.Nf4 Nc6 17.Bd3 f5 18.gxf5 gxf5 19.Bg3 Nb4 20.Kd2 Nxd3 21.Nxd3 Nf7 22.h5 Kc6 23.Be5 Ba3 24.Bf6 Bd6 25.Ne5+ Nxe5 26.Bxe5 Kd7 27.Bxd6 Kxd6
 47/58	23:40	11 812 670 078	8 317 938	+0,54	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Ned6 4.Nf4 Rc8 5.Rac1 Rxc2 6.Rxc2 Rc8 7.Rxc8 Nxc8 8.Be2 a5 9.f3 Nd8 10.Ba6 Nd6 11.g4 Be7 12.Kf1 Kf8 13.Ke2 Ke8 14.Nd3 Nc6 15.Ne5 Nd8 16.h4 f6 17.Nd3 Kf7 18.Bd2 Bf8 19.Nf4 Nc6 20.Be1 Bh6 21.Nd3 Ke7 22.Bc3 Kf7 23.b4 Bf8 24.b5 Ne7 25.Be1 Bh6
 48/60	26:04	12 997 934 742	8 307 709	+0,56	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Rc8 4.Rac1 Rxc2 5.Rxc2 Ned6 6.Nf4 Rc8 7.Rxc8 Nxc8 8.Be2 a5 9.f3 Be7 10.Kf1 Nd8 11.Ba6 Nd6 12.g4 Kf8 13.Ke2 Ke8 14.Nd3 Nc6 15.Ne5 Nd8 16.h4 f6 17.Nd3 Kf7 18.Bc3 Nc6 19.Nf4 Bf8 20.Bd3 Bh6 21.Nh3 Nb4 22.Be1 Nxd3 23.Kxd3 e5 24.g5 Bf8 25.gxf6 e4+ 26.fxe4 dxe4+ 27.Ke2 Kxf6 28.Nf4
 49/63	31:36	15 742 533 487	8 300 589	+0,52	1.a4 Raa8 2.Kf1 Nd6 3.Rc6 a5 4.Nf4 Nc8 5.g4 Ne7 6.Rc7 Ne8 7.Rc2 Rc8 8.Rac1 Nd6 9.Be2 Rxc2 10.Rxc2 Rc8 11.Rxc8 Nexc8 12.Be1 Ne7 13.f3 Nc6 14.Ba6 Be7 15.Ke2 Kf8 16.Nd3 Ke8 17.Ne5 Nd8 18.h4 f6 19.Nd3 Kf7 20.Bd2 Nc6 21.Nf4 Bf8 22.Bd3 Bh6 23.Nh3 Ke7 24.Bc3 Nb4 25.Bxb4 axb4 26.Nf2 Bg7 27.Ba6 e5 28.Nd3
 50/63	33:45	16 780 664 103	8 284 894	+0,52	1.a4 Raa8 2.Kf1 Nd6 3.Rc6 a5 4.Nf4 Nc8 5.g4 Ne7 6.Rc7 Ne8 7.Rc2 Rc8 8.Rac1 Nd6 9.Nd3 Rxc2 10.Rxc2 Rc8 11.Rxc8 Ndxc8 12.Ne5 f6 13.Nd7 Kf7 14.Be2 Nc6 15.Ba6 N6a7 16.Nxf8 Kxf8 17.b4 axb4 18.Bxb4+ Ke8 19.h4 Kd7 20.g5 fxg5 21.hxg5 Nc6 22.Ba3 Nd6 23.Bxd6 Kxd6 24.Bb5 Nd8 25.f4 Ke7 26.Ke2 Nb7 27.Bd3 Nd6 28.Kd2 Kd7
 51/72+	1:07:07	33 318 987 119	8 273 388	+0,61	1.a4
 51/72	1:15:59	37 546 796 071	8 234 444	+0,61	1.a4 Ne8 2.Rc2 Nbd6 3.Rc6 a5 4.Nc3 Rc7 5.Rxc7 Nxc7 6.Be2 Bg7 7.Kf1 Rc8 8.Bd3 f5 9.Ne2 Nce8 10.Be1 Bh6 11.Rc1 Rxc1 12.Nxc1 Bf8 13.Ne2 Kf7 14.g4 Ne4 15.f3 N4f6 16.Kg2 h6 17.Nc1 Bd6 18.Be2 fxg4 19.hxg4 h5 20.gxh5 Nxh5 21.Bb5 Nc7 22.Bd3 g5 23.Be2 Ng7 24.e4 e5 25.dxe5 Bxe5 26.Nd3 Ke6 27.Nxe5
 
-------------------------------------------------------------------------------------------------------------------

Stockfish_190305_x64_modern:
Found 511 tablebases
...
 36/48	01:22	 671 136 804	8 176 518	+0,52	1.Nf4 Raa8 2.Nd3 Nd6 3.a4 a5 4.Rc6 Nc8 5.g4 Na7 6.Rc2 Rc8 7.Rac1 Rxc2 8.Rxc2 Rc8 9.Rxc8 Nxc8 10.Kf1 Bd6 11.b4 Ne4 12.Be1 axb4 13.Nxb4 Ne7 14.Nd3 Nc6 15.Bxe4 dxe4 16.Nb2 Na5 17.Bxa5 bxa5 18.Nc4 Bb4 19.f3 exf3 20.Kf2 f5 21.gxf5 exf5 22.Ne5 Bd6
 37/51+	01:58	 977 254 369	8 258 231	+0,61	1.Nf4
 37/51	02:14	1 111 254 371	8 280 707	+0,55	1.Nf4 Ba3 2.Nd3 Ne8 3.Rc6 Nbd6 4.Bc1 Bxc1 5.Raxc1 a5 6.a4 Nf5 7.g4 Ne7 8.R6c3 Nd6 9.h4 b5 10.Rc7 Rbb7 11.Rxb7 Rxb7 12.Rc5 h6 13.Ne5 Kf8 14.Kg2 f6 15.Nc6 bxa4 16.bxa4 Nxc6 17.Rxc6 Ke7 18.Ra6 Nc4 19.g5 fxg5 20.hxg5 hxg5 21.Bg4 Nd6 22.Rxa5
 38/51-	03:22	1 687 203 049	8 316 343	+0,46	1.Nf4 Ne8
 38/53+	04:05	2 039 843 844	8 322 801	+0,55	1.Nf4
 38/53	04:23	2 188 887 033	8 317 261	+0,51	1.Nf4 Ne8 2.Rc2 Ba3 3.Bc1 Bxc1 4.Raxc1 Kg7 5.Nd3 Nbd6 6.a4 a5 7.Rc6 Nf5 8.g4 Ne7 9.R6c3 Nd6 10.Be2 Rc8 11.Rxc8 Ndxc8 12.Kg2 f6 13.h4 Nd6 14.Kh3 Ne4 15.Rc2 Kf7 16.f3 Nd6 17.Kg3 h6 18.Nf4 e5 19.dxe5 fxe5 20.Nd3 Kf6 21.Nf2 e4 22.fxe4 Nxe4+ 23.Nxe4+ dxe4
 39/57	04:33	2 279 482 009	8 319 732	+0,51	1.Nf4 Ne8 2.Rc2 Ba3 3.Bc1 Bxc1 4.Raxc1 a5 5.a4 Nbd6 6.Nd3 Kg7 7.Rc6 Nf5 8.g4 Ne7 9.R6c3 Nd6 10.Be2 Rc8 11.Rxc8 Ndxc8 12.h4 Nd6 13.Kg2 h6 14.Rc2 Rb7 15.f3 Ra7 16.Rc1 f6 17.Nf4 e5 18.Ne6+ Kf7 19.dxe5 fxe5 20.Nc7 Kf6 21.Kf2 e4 22.Nb5 Nxb5 23.axb5 Ke5 24.fxe4
 40/54+	04:55	2 464 559 012	8 334 152	+0,61	1.Nf4
 40/58	05:32	2 774 329 917	8 344 526	+0,52	1.Nf4 Ba3 2.Bc1 Bf8 3.Bd1 a5 4.a4 Ne8 5.Rc2 Nbd6 6.Bd2 Rc8 7.Rac1 Rac7 8.g4 Rxc2 9.Rxc2 Rxc2 10.Bxc2 Nc8 11.f3 Ne7 12.Bd3 Nc7 13.Kf2 Nc6 14.Ne2 f6 15.e4 Kf7 16.g5 fxg5 17.Bxg5 Nb4 18.Bb1 Bd6 19.Ke3 e5 20.Bd8 Ke6 21.dxe5 Bxe5
 41/52-	06:26	3 228 054 036	8 354 890	+0,43	1.Nf4 Ba3
 41/56+	07:08	3 580 575 910	8 363 310	+0,52	1.Nf4
 41/57	08:38	4 340 879 238	8 375 273	+0,45	1.Nf4 Ne8 2.Rc2 Ba3 3.Bc1 Be7 4.Nd3 Nbd6 5.Bd2 Rc8 6.Rac1 Rxc2 7.Rxc2 Rc7 8.Rxc7 Nxc7 9.Be2 a5 10.Ne5 Ne4 11.Be1 Bb4 12.Kf1 Bxe1 13.Kxe1 Nf6 14.f3 Kf8 15.g4 h6 16.Kd2 Ke7 17.h4 g5 18.hxg5 hxg5 19.Bd3 Nd7 20.Nxd7 Kxd7 21.Kc3 Kd6 22.a4
 42/56+	09:59	4 939 450 853	8 235 314	+0,54	1.Nf4
 42/56	10:12	5 045 590 047	8 236 111	+0,57	1.Nf4 Ba3 2.Bc1 Bf8 3.Nd3 Ne8 4.Rc3 Nbd6 5.Bb2 a5 6.a4 Rc8 7.Rac1 Rac7 8.Ne5 Rxc3 9.Rxc3 Be7 10.Be2 Rxc3 11.Bxc3 f6 12.Nc6 Kf7 13.f3 Bf8 14.Kf2 Nc7 15.Bd3 Ke8 16.g4 Kd7 17.Nb8+ Kc8 18.Na6 Nxa6 19.Bxa6+ Kd7 20.Bd3 f5 21.Be1 Nf7 22.Bb5+ Kc7 23.Ke2 Bd6 24.Kd3 g5 25.gxf5 exf5
 43/44-	10:26	5 157 655 196	8 238 157	+0,48	1.Nf4 Ba3
 43/54+	12:05	5 963 527 358	8 219 908	+0,57	1.a4
 43/60	12:42	6 257 620 073	8 209 115	+0,51	1.a4 Raa8 2.Be1 h5 3.Rc2 a5 4.Nf4 Nd6 5.Nd3 Rc8 6.Rac1 Rxc2 7.Rxc2 Rc8 8.Bd1 Be7 9.Kf1 Kf8 10.Rxc8+ Nxc8 11.b4 axb4 12.Nxb4 Ne4 13.Ke2 Bxb4 14.Bxb4+ Ned6 15.Kd3 Ke7 16.f3 Kd7 17.a5 bxa5 18.Bxa5 Nc4 19.Ba4+ Kd6 20.Bb4+ Kc7 21.Bb3 N8b6 22.Bc5 Kc6 23.e4 Kb5 24.exd5 exd5 25.Bxb6
 44/61+	13:06	6 460 993 637	8 211 954	+0,60	1.a4
 44/61	14:37	7 211 019 637	8 218 894	+0,44	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Rc8 4.Rac1 Rxc2 5.Rxc2 Ned6 6.Kf1 Rc8 7.Rxc8 Nxc8 8.Nc1 a5 9.Nd3 Nbd6 10.Ke2 Be7 11.g4 Na7 12.Bg2 Nc6 13.f3 Kf8 14.h4 Ke8 15.Bh3 f6 16.g5 Nf5 17.Bxf5 gxf5 18.gxf6 Bxf6 19.Bg3 Kd7 20.Kd2 Nb4 21.h5 Bg5 22.Bf4 Nxd3 23.Bxg5 Nb4
 45/57+	14:55	7 356 120 661	8 218 715	+0,53	1.a4
 45/57	15:31	7 644 143 950	8 203 658	+0,56	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Rc8 4.Rac1 Rxc2 5.Rxc2 Ned6 6.Kf1 Rc8 7.Rxc8 Nxc8 8.Nf4 a5 9.Nd3 Nbd6 10.b4 axb4 11.Nxb4 f6 12.Be2 Kf7 13.f3 Ne7 14.Bd3 Ke8 15.Ke2 Kd7 16.g4 Nc6 17.Nxc6 Kxc6 18.Bb4 Be7 19.h4 Kd7 20.e4 f5 21.exf5 exf5 22.h5 fxg4 23.fxg4 gxh5 24.gxh5
 46/61-	17:48	8 753 011 517	8 192 106	+0,47	1.a4 Raa8
 46/61	20:05	9 883 188 033	8 199 910	+0,47	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Rc8 4.Rac1 Ned6 5.Kf1 Rxc2 6.Rxc2 Rc8 7.Nc3 Nd8 8.Be2 a5 9.Bd3 Nc6 10.Na2 Ne7 11.Rxc8 Ndxc8 12.f3 Nc6 13.Ke2 Bd6 14.Nc3 Bb4 15.g4 Kf8 16.Kd2 Nd6 17.Kc2 Ke7 18.Bf2 h6 19.h4 Bxc3 20.Kxc3 Nb4 21.Bg3 h5 22.gxh5 gxh5 23.Bxd6+ Kxd6 24.Be2 Na2+ 25.Kd2
 47/60	22:31	11 080 954 285	8 199 325	+0,46	1.a4 Raa8 2.Be1 Ne8 3.Rc2 Rc8 4.Rac1 Ned6 5.Kf1 Rxc2 6.Rxc2 Rc8 7.Nc3 Nd8 8.Be2 a5 9.Bd3 Nc6 10.Nb5 h5 11.f3 Nb4 12.Rxc8 Nxc8 13.Ke2 Be7 14.Bd2 Kf8 15.e4 Ke8 16.e5 Nc6 17.g4 hxg4 18.fxg4 Kd7 19.Be1 g5 20.Kf3 f6 21.exf6 Bxf6 22.Bf2 Nd6 23.Be3 Nf7 24.Bh7 Nd6
 48/66+	25:01	12 321 264 991	8 203 856	+0,55	1.a4
I guess it is mobility that allows mine to find it faster (about a minute).
I have a mobility patch that works like this:
If the number of possible moves is very small, reduce pruning a little.
If the number of possible moves is very large, increase pruning a little.

That is really the only functional change as far as search goes in the code.
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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