Discussion of anything and everything relating to chess playing software and machines.
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Vinvin
Posts: 5287Joined: Thu Mar 09, 2006 9:40 amFull name: Vincent Lejeune
Post by Vinvin Mon Jul 31, 2017 2:17 am
MikeB wrote:
#9 r2qnrk1/p4pp1/1p2b2p/2p1Pp2/2P5/PnPB1QN1/6PP/R1B2RK1 w - - bm Bxh6
Are you sure that Bxh6 is stronger than Bxf5 ?
Even after some learning, McBrain likes Bxf5 :
Code: Select all
McBrain_2017_v26_x64_modern:
...
34/70 01:07 762 466k 11 377k +1,08 1.Bxh6 Qh4 2.Qxa8 Qxh6 3.Rae1 Nf6 4.Qxa7 Ng4 5.h3 f4 6.Nf5 Bxf5 7.Bxf5 Ne3 8.Qd7 Qg5 9.Rxe3 fxe3 10.e6 e2 11.exf7+ Kh8 12.Re1 g6 13.Qe8 Kg7 14.Bg4 Nc1 15.Bxe2 Nxe2+ 16.Qxe2 Rxf7 17.Qe6 Qf6 18.Qxf6+ Rxf6 19.Re7+ Kh6 20.Rb7 Kg5 21.a4 Kf4 22.Ra7 Rd6 23.Kh2 Rd2 24.Ra6 Rb2
34/70 01:07 762 466k 11 377k +1,89 1.Bxf5 Bxc4 2.Rd1 Qe7 3.Qxa8 Nxa1 4.Qe4 Be6 5.Qg4 g5 6.Qh3 Ng7 7.Rf1 f6 8.Bxe6+ Qxe6 9.Qxh6 fxe5 10.Rxf8+ Kxf8 11.Qh7 Qg4 12.Qd3 Nb3 13.Qd8+ Ne8 14.Bxg5 Qe6 15.Qb8 a5 16.Ne4 c4 17.Qa7 Kg8 18.h4 Kh8 19.Be3 Qg4 20.Qa8 Kg7 21.Qxe8 Qxe4 22.Qe7+ Kg8 23.Bxb6 Nd2 24.Qg5+ Kf7 25.Qxd2 Qb1+ 26.Kh2 Qxb6 27.Qd5+ Kf6 28.Qxc4
MikeB
Posts: 4889Joined: Thu Mar 09, 2006 6:34 amLocation: Pen Argyl, Pennsylvania
Post by MikeB Mon Jul 31, 2017 4:49 am
Eelco de Groot wrote: rabbits23 wrote: Eelco : Neither Komodo10 or Stockfish 7 64 could find 50] Nd3 after 20 minutes of searching.Once I entered the move into their program they registered White with a plus score of (+2.00). Commercial computer chess programs still have a bit of improvement to go it seems; especially when
I tried this again today with Ancalagon (HT so using 7 threads instead of 4 but apart from using hyperthreads it's the same hardware) instead of Rainbow Serpent, and giving it about the same bonus for moving the King towards the immobile Rook. The bonus helps a little a think but the bench goes up which is not a good sign. The bonus is awarded rarely though, so maybe it is not too costly. Any engine today, like Komodo or Brain maybe, that solves it quickly? Ancalagon here a little bit faster than Serpent was the last time but that may be because the extra hyperthreads are kicking in. Or simply searchluck.
[d]8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - -
Engine: Ancalagon_040 HT (SF20170629 based, 512 MB, i7 6700, 4 threads +3 hyperthreads)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
26/20 0:01 0.00 50.hxg5 fxg5 51.Nxh5 Nc6 52.Rd3 Ne5
47/47 26:12 +0.08++ 50.Nd3 (22.072.325.629) 14036 Code: Select all
latest dev-SF-McB find this quickly - single core/thread mode:
dep score nodes time (not shown: tbhits knps seldep)
37 +3.73! 494.0M 4:14.89 Nd3!
36 +3.66 489.0M 4:12.49 Nd3 gxh4 gxh4 Nc6 e3 Kg6 Kc3 Kf5 f3 Ne5 Nc1 Kg6 Kb3 Nxf3 Rf4 d4 Rxf3 dxe3 Nd3 e2 Nf4+ Kf7 Nxe2 Rd5 Nf4 Re5 Rc3 Kg7 Rd3 b5 Kc3 Re4 Rd4 Re3+ Kd2 Re5 Kd3 Rf5 Re4 Kf7 Kc3 Kg7 Rd4 Kf8 Nd5 Kf7 Nf4
36 +3.73! 442.0M 3:48.95 Nd3!
36 +3.59? 426.6M 3:41.01 Nd3 Nf5?
35 +3.66 377.2M 3:15.88 Nd3 Nc6 e3 Ke6 Kc3 Kf5 f3 gxh4 gxh4 Ne5 Nc1 Kg6 Kb3 Nxf3 Rf4 d4 Rxf3 dxe3 Nd3 e2 Nf4+ Kf7 Nxe2 Rd5 Nf4 Re5 Rc3 Kg7 Rd3 b5 Kc3 Re4 Rd4 Re3+ Kd2 Re5 Kd3 Rf5 Re4 Kf7 Kd4 Kg8 Re8+ Kf7 Ke4 Kxe8
34 +3.66 368.3M 3:11.42 Nd3 Nc6 e3 Ke6 Kc3 Kf5 f3 gxh4 gxh4 Ne5 Nc1 Kg6 Kb3 Nxf3 Rf4 d4 Rxf3 dxe3 Nd3 e2 Nf4+ Kf7 Nxe2 Rd5 Nf4 Re5 Rc3 Kg7 Rd3 Rf5 Rd4 b5 Kc3 Kf8 Re4 Kf7 Kd3 Kg8 Re8+ Kf7 Ke4 Kxe8
34 +3.60! 332.5M 2:52.86 Nd3!
34 +3.45! 290.1M 2:30.78 Nd3!
34 +3.34! 262.3M 2:16.45 Nd3!
34 +3.27! 256.5M 2:13.38 Nd3!
33 +3.20 245.6M 2:07.71 Nd3 Nc6 e3 Ke6 Kc3 Kf5 f3 Ke6 Kb3 Kd6 Ka4 Rc5 bxc5+ bxc5 Nxc5 Kxc5 hxg5 fxg5 Rd1 Ne5 f4 gxf4 Rc1+ Kd6 exf4 Ng4 Kb5 Ke6 Re1+ Kd6 Kb4 Nf2 Kc3 Kc5 f5 d4+ Kd2 Ng4 Rf1 Nf6 Kd3 Kd5 Ra1 Nd7 Ra5+ Nc5+ Ke2 Kd6 f6 d3+ Kd1
33 +2.68? 239.8M 2:04.72 Nd3 Nc6?
33 +3.37! 233.2M 2:01.34 Nd3!
33 +2.89? 217.7M 1:53.29 Nd3 Nc6?
33 +3.04? 217.6M 1:53.22 Nd3 Nc6?
33 +3.26! 204.4M 1:46.79 Nd3!
33 +3.11? 188.5M 1:38.62 Nd3 Nc6?
32 +3.19 183.9M 1:36.24 Nd3 Nc6 e3 Kg6 Kc3 Kf5 f3 gxh4 gxh4 Ne5 Nc1 Kg6 Kb3 Nxf3 Rf4 d4 Rxf3 dxe3 Nd3 e2 Nf4+ Kf7 Nxe2 Re5 Nc3 Ke6 Kc4 f5 Rg3 f4 Rg6+ Kf5 Rg8 Ke6 Kd4 Rf5 Ke4 f3 Rg6+ Rf6 Rxf6+ Kxf6 Kxf3
32 +3.08! 160.0M 1:23.67 Nd3!
32 +2.87! 137.4M 1:11.92 Nd3!
32 +2.72! 120.6M 1:03.01 Nd3!
32 +2.61! 102.3M 0:53.16 Nd3!
32 +2.54! 96.5M 0:50.11 Nd3!
31 +2.46 88.5M 0:45.62 Nd3 Nc6 e3 Kg6 Kc3 Kf5 f3 Ke6 Kb3 Kd6 Ka4 Rc5 bxc5+ bxc5 Nxc5 Kxc5 hxg5 fxg5 Rd1 g4 Rc1+ Kd6 Kb5 Ne5 f4 Nf3 Rc6+ Ke7 Kc5 h4 gxh4 Nxh4 Kxd5 g3 Rc1 Nf3 Ke4 Nh4 Kd3 g2
31 +2.53! 82.3M 0:42.54 Nd3!
31 +2.42! 75.0M 0:38.96 Nd3!
31 +2.35! 65.2M 0:33.91 Nd3!
30 +2.28 59.4M 0:31.12 Nd3 Nc6 e3 Nd8 Kc3 Ne6 Nc1 Kg6 Ne2 Kf5 Kb3 Nxd4+ Nxd4+ Kg4 Nxb5 gxh4 gxh4 Kxh4 Kc3 Kg4 Kd2 Kf3 Ke1 Kg2 Nc7 d4 exd4 h4 Ne6 Kf3 Kf1 Ke4 Kg2 Kd5 Nc7+ Kxd4 Kh3 Ke4 Kxh4
30 +2.33! 56.7M 0:29.74 Nd3!
29 +2.26 51.1M 0:26.90 Nd3 Nc6 e3 Ke6 Kc3 Kf5 f3 Ke6 Kb3 Kd6 Ka4 Rc5 bxc5+ bxc5 Nxc5 Kxc5 hxg5 fxg5 Rd1 d4 Rc1+ Kd6 Kb5 Ne5 exd4 Nxf3 Kc4 g4 Ra1 Ke6 Ra6+ Kf5 d5 Ne5+ Kd4 Nf3+ Kc5 Ng5 Ra3 Ne4+ Kd4 Ng5
29 +2.12! 45.2M 0:23.84 Nd3!
29 +1.91! 38.5M 0:20.39 Nd3!
29 +1.75! 32.4M 0:17.13 Nd3!
29 +1.64! 29.6M 0:15.68 Nd3!
29 +1.57! 27.0M 0:14.35 Nd3!
28 +1.50 25.8M 0:13.74 Nd3 Nc6 e3 Ke6 Kc3 Kf5 f3 gxh4 gxh4 Ne5 Kb3 Nxd3 Rxd3 d4 Kc4 Re5 Kxd4 Ke6 e4 f5 Ke3 Rb5 Rd4 fxe4 fxe4 Ke5 Rc4 Ke6 Kf4 Kd7 Rd4+ Ke6 Kf3 Re5 Ke3 Kf7 Rd6 Rb5
28 +1.39! 21.0M 0:11.21 Nd3!
28 +1.24! 18.5M 0:09.85 Nd3!
28 +1.13! 14.6M 0:07.76 Nd3!
28 +1.06! 14.1M 0:07.51 Nd3!
27 +0.98 12.1M 0:06.45 Nd3 Nf5 e3 Ng7 Kc3 Ne6 Kb3 Nc5+ Ka3 Nxd3 Rxd3 d4 Rxd4 g4 Ka4 Re5 Rf4 Ke6 e4 Kf7 Kb3 Ke6 Kc3 Kf7 Rf5 Ke6 Kd4 Rxf5 exf5+ Kd6 b5 Kc7 Ke4 Kd6 f3 gxf3
27 +1.04! 11.8M 0:06.27 Nd3!
26 +0.96 10.9M 0:05.78 Nd3 Nf5 e3 Ng7 Kc3 Ne6 Kb3 Nc5+ Ka3 Nxd3 Rxd3 d4 Rxd4 g4 Ka4 Re5 Kb3 Ke6 Kc3 Rd5 e4 Rxd4 Kxd4 Kd6 Ke3 Ke5 b5 Kd6 Kf4 Ke6 e5 Kf7 Kf5 fxe5
26 +0.89? 9.67M 0:05.19 Nd3 Nf5?
26 +1.00? 9.45M 0:05.07 Nd3 Nf5?
26 +1.07? 9.30M 0:05.00 Nd3 Nf5?
25 +1.14 8.79M 0:04.73 Nd3 Nf5 e3 Ng7 Kc3 Ne6 Kb3 Nc5+ Ka3 Nxd3 Rxd3 d4 Rxd4 g4 Ka4 Rf5 Rd7+ Ke6 Rd2 Re5 Kb3 Rd5 Ra2 Ke5 Ra6 Rd2 Rxb6 Rxf2 Rb5+ Ke6
25 +1.19! 8.37M 0:04.50 Nd3!
24 +1.12 7.85M 0:04.22 Nd3 Nf5 e3 Nxd4 exd4 Kg6 Kc3 Kf5 f3 g4 Kb3 gxf3 Nf2 Kg6 Ka4 Rxb4+ Kxb4 f5 Nd3 f4 gxf4 Kf5 Kb3 Ke4 Kc3 Kf5 Kd2 Ke4 f5 Kxf5 Ke3 Kg4
24 +1.11! 7.02M 0:03.74 Nd3!
23 +1.04 5.98M 0:03.18 Nd3 Nf5 e3 Nd6 Kc3 Ne4+ Kb3 Ke6 f3 Nc5+ Ka3 Nxd3 Rxd3 gxh4 gxh4 d4 e4 f5 Rxd4 fxe4 fxe4 Re5 Kb3 Kf7 Ka4 Re6 Kb5
22 0.00 4.14M 0:02.24 Nd3 Nf5 e3 Nxd4 exd4 Kg6 Kc3 Kf5 f3 g4 fxg4+ Kxg4 Kb3 Kxg3 Ka4 Ra5+ bxa5 bxa5 Kxa5 Kxh4 Kb6 Kg3 Nb4 Kf4 Kc6 h4 Nxd5+
21 0.00 2.05M 0:01.12 hxg5 fxg5 Nxh5 Nc6 Rd3 Ne5 Rd4 Nc6
20 0.00 1.39M 0:00.77 hxg5 fxg5 Nxh5 Nc6 Rd3 Ne5 Rd4 Nc6
zullil
Posts: 6442Joined: Tue Jan 09, 2007 12:31 amLocation: PA USAFull name: Louis Zulli
Post by zullil Mon Jul 31, 2017 2:02 pm
MikeB wrote:
Why do you think this happens? Is there some specific change you made that helps SF-McB find this quickly?
zullil
Posts: 6442Joined: Tue Jan 09, 2007 12:31 amLocation: PA USAFull name: Louis Zulli
Post by zullil Mon Jul 31, 2017 2:59 pm
Vinvin wrote: MikeB wrote:
#9 r2qnrk1/p4pp1/1p2b2p/2p1Pp2/2P5/PnPB1QN1/6PP/R1B2RK1 w - - bm Bxh6
Are you sure that Bxh6 is stronger than Bxf5 ?
Even after some learning, McBrain likes Bxf5 :
Code: Select all
McBrain_2017_v26_x64_modern:
...
34/70 01:07 762 466k 11 377k +1,08 1.Bxh6 Qh4 2.Qxa8 Qxh6 3.Rae1 Nf6 4.Qxa7 Ng4 5.h3 f4 6.Nf5 Bxf5 7.Bxf5 Ne3 8.Qd7 Qg5 9.Rxe3 fxe3 10.e6 e2 11.exf7+ Kh8 12.Re1 g6 13.Qe8 Kg7 14.Bg4 Nc1 15.Bxe2 Nxe2+ 16.Qxe2 Rxf7 17.Qe6 Qf6 18.Qxf6+ Rxf6 19.Re7+ Kh6 20.Rb7 Kg5 21.a4 Kf4 22.Ra7 Rd6 23.Kh2 Rd2 24.Ra6 Rb2
34/70 01:07 762 466k 11 377k +1,89 1.Bxf5 Bxc4 2.Rd1 Qe7 3.Qxa8 Nxa1 4.Qe4 Be6 5.Qg4 g5 6.Qh3 Ng7 7.Rf1 f6 8.Bxe6+ Qxe6 9.Qxh6 fxe5 10.Rxf8+ Kxf8 11.Qh7 Qg4 12.Qd3 Nb3 13.Qd8+ Ne8 14.Bxg5 Qe6 15.Qb8 a5 16.Ne4 c4 17.Qa7 Kg8 18.h4 Kh8 19.Be3 Qg4 20.Qa8 Kg7 21.Qxe8 Qxe4 22.Qe7+ Kg8 23.Bxb6 Nd2 24.Qg5+ Kf7 25.Qxd2 Qb1+ 26.Kh2 Qxb6 27.Qd5+ Kf6 28.Qxc4
asmFish prefers Bxf5 too:
Code: Select all
info depth 50 seldepth 103 multipv 1 time 7996738 nps 36864303 score cp 261 nodes 294794178677 tbhits 0 hashfull 999 pv d3f5 e6c4 f1d1 d8h4 f3a8 b3a1 a8a7 g7g6 f5e4 c4b3 d1e1 b3e6 a7b6 a1b3 c1e3 e8g7 e4c2 h4d8 b6b5 d8a5 b5a5 b3a5 e3h6 e6d5 e1d1 d5c6 g3e4 g8h7 h6g5 g7e6 g5e7 f8b8 d1d3 c6e4 d3h3 h7g8 c2e4 e6g7 e7c5 b8b5 c5d4 g7e6 a3a4 b5b2 h3f3 e6g5 f3f4 g5e4 f4e4 a5b3 d4e3 b2a2 e5e6 f7e6 e4e6 g8f7 e6b6 b3a5 e3d4 a2a4 b6a6 g6g5 g1f2 a4a2 f2f3
info depth 50 seldepth 103 multipv 2 time 7996738 nps 36864303 score cp 170 nodes 294794178677 tbhits 0 hashfull 999 pv c1h6 d8h4 f3a8 h4h6 a1e1 e8f6 a8a7 f6g4 h2h3 f5f4 g3e4 g4e5 d3c2 f4f3 a7e7 b3c1 e4g5 c1e2 g1h2 g7g6 g5e6 e5g4 h2h1 f3g2 h1g2 g4e3 g2f2 f7e6 f2e2 e3f1 e7e6 g8g7 e6e5 g7h7 e1f1 f8f1 c2g6 h6g6 e2f1 g6c2 f1e1 c2b2 e5c7 h7g6 c7g3 g6h7 g3d3 h7g7 a3a4 b2b3 d3g3 g7f8 g3f3 f8g7 f3g4 g7f6 e1f2 b3a4 g4f4 f6e7 f4e4 e7f7 f2g3 a4a1 e4f3 f7g7 g3f4 a1a2 f3g4 g7h7 f4g5 a2d2 g5f5 d2f2 f5e5
MikeB
Posts: 4889Joined: Thu Mar 09, 2006 6:34 amLocation: Pen Argyl, Pennsylvania
Post by MikeB Mon Jul 31, 2017 5:08 pm
zullil wrote: MikeB wrote:
Why do you think this happens? Is there some specific change you made that helps SF-McB find this quickly?
I can't explain it since my changes come from many sources - and I generally run a long time control match to ensure it doesn't hurt ELO too much , I keep it. Often it is much after the fact - when I notice that another position is getting solved. That is certainly the case here.
peter
Posts: 3384Joined: Sat Feb 16, 2008 7:38 amFull name: Peter Martan
Post by peter Mon Jul 31, 2017 9:58 pm
Looking forward curiously to the new version.
H5 here too at single thread:
Code: Select all
8/4nk2/1p3p2/1r1p2pp/1P1R1N1P/6P1/3KPP2/8 w - - 0 1
Analysis by Houdini 5.01 Pro x64-popc:
...
50.hxg5 fxg5 51.Nxh5 Kg6 52.g4 Nc6 53.Rd3 Ne5 54.Rd4 Nc6
= (0.00 --) Depth: 33/63 00:02:34 320MN
50.Nd3
= (0.17 ++) Depth: 33/66 00:02:44 344MN
---
50.Nd3 Nf5 51.e3 Nd6 52.Kc2 Ne4 53.Nb2 Nxf2 54.Nd1 Ng4 55.Kb3 gxh4 56.gxh4 Ke6 57.Nc3 Rxb4+ 58.Rxb4 Nxe3 59.Rxb6+ Ke5 60.Ne2 Nf5 61.Rb4 d4 62.Kc4 Nxh4 63.Kd3 f5 64.Nxd4 Kf6 65.Ke3 Ng2+ 66.Kf3 Ne1+ 67.Ke2 Ng2 68.Nf3 h4 69.Kf2 h3 70.Kg3 Ne3 71.Kxh3 Kg7
+- (2.16) Depth: 33/75 00:15:50 1979MN
Peter.
