Test position: Kasparov-Pribyl (1980) - very tough

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mmt
Posts: 343
Joined: Sun Aug 25, 2019 8:33 am
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Re: Test position: Kasparov-Pribyl (1980) - very tough

Post by mmt »

LC0 with 384x30-t60-3180 finds it but I haven't recorded in how much time (it's less than 4 hours).
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MMarco
Posts: 195
Joined: Sun Apr 12, 2020 1:09 am
Full name: Marc-O Moisan-Plante

Re: Test position: Kasparov-Pribyl (1980) - very tough

Post by MMarco »

Pafifi wrote: ↑Tue Apr 21, 2020 10:28 am Seem not a very significant advantage though?
It looks like 20.d7 must be followed by 21.Rd6 to get a larger score:

Code: Select all

Analysis by CorChess 6.0 240320 64 POPCNT:

20.d7 Rad8 21.Rd6 c4 22.Qxc4+ Kh8 23.Ne5 Qc7 24.Qxc7 Nxc7 25.Nc6 fxg5 26.Rc1 Ne6 27.Rcd1 Nc7 28.g3 Kg8 29.Nxd8 Rxd8 30.Rc6 Be5 31.Re1 Bxg3 32.hxg3 Rxd7 33.Re5 Kf7 34.Rxg5 Ne6 35.Rg4 Nd4 36.Rc8 Nf3+ 37.Kg2 Ne1+ 38.Kf1 Nd3 39.Re4 Nc5 40.Re3 Ne6 41.Kg2 Nc5 42.Rf3+ Kg7 43.Rf4 Ne6 44.Re4 Kf7 45.Rec4 Nc5 46.Rc6 Re7 47.Rd4 Ke8 48.Rc8+ Kf7 49.Rf4+ Ke6 50.Rd8 Rc7 51.Rff8 Rb7 52.Rfe8+ Kf7 53.Rb8 Rc7 54.Rf8+ Kg7 55.Rbc8 Rd7 56.Rfd8 Rb7 57.Rc6 Re7 58.Rd4 Kf8 59.a4 Nb3 60.Rd8+ Kf7 61.Rdc8 Nc5 62.a5
  White is clearly better: +- (2.25)  Depth: 56/93   06:24:41  100541MN, tb=15676994
See: http://rybkaforum.net/cgi-bin/rybkaforu ... #pid586129
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acase
Posts: 983
Joined: Wed Mar 15, 2006 1:14 am
Location: Columbus, Ohio USA
Full name: Andrew R Case

Re: Test position: Kasparov-Pribyl (1980) - very tough

Post by acase »

It looks like the new RofChade 2.3 does a reasonable job on this one.

Code: Select all

FEN: r4rk1/pq4bp/np1P1pp1/2p3B1/Q7/5N2/P4PPP/1R1R2K1 w - - 0 20

RofChade_bmi2:
 10/17	00:00	 1,545k	29,712k	+0.09	20.Bg5-d2 Ra8-d8 21.Qa4-c4+ Rf8-f7 22.Bd2-c3 Kg8-h8 23.Rb1-c1 Na6-b8 24.Qc4-e6 Nb8-c6
 11/17	00:00	 1,771k	29,522k	+0.01	20.Bg5-d2 Ra8-d8 21.Qa4-c4+ Rf8-f7 22.Bd2-c3 Na6-b8 23.Rd1-e1 Qb7-a6 24.Qc4-d5 Qa6-b7 25.Qd5-c4
 12/20	00:00	 2,872k	30,237k	-0.11	20.Bg5-e3 Ra8-d8
 13/21	00:00	 4,472k	30,424k	+0.18	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b4 22.Rd1-e1 Nb4-c6 23.h2-h3 Ra8-d8 24.Re1-e6 Qb7-d7 25.Rb1-e1 Nc6-a5
 14/24	00:00	 5,538k	30,596k	+0.15	20.Bg5-f4 Rf8-f7 21.Rd1-d2 Na6-b4 22.Qa4-b3 Qb7-d7 23.Rd2-e2 Nb4-c6 24.Qb3-d5 Ra8-e8 25.Re2xe8+ Qd7xe8 26.h2-h4 Qe8-d7
 15/24	00:00	 6,799k	30,764k	+0.02	20.Bg5-f4 Rf8-f7
 16/30	00:00	 9,871k	31,042k	+0.20	20.Bg5-f4 Rf8-f7 21.Rd1-d2 Na6-b8 22.Rb1-e1 Nb8-c6 23.Rd2-e2 Ra8-d8 24.h2-h3 Qb7-d7 25.Qa4-e4 Bg7-f8
 17/30	00:00	 23,937k	31,579k	+0.01	20.Bg5-f4 Rf8-f7 21.Rd1-d2 Bg7-f8 22.Bf4-g3 Na6-b4 23.Rb1-e1 Nb4-c6 24.Qa4-b3
 18/30	00:00	 27,711k	31,669k	-0.01	20.Bg5-f4 Rf8-f7 21.Rd1-d2 Bg7-f8 22.Bf4-g3 Na6-b4 23.Rb1-e1 Nb4-c6 24.Qa4-b3 Ra8-d8 25.Re1-e6
 19/35	00:02	 70,406k	32,311k	-0.01	20.Bg5-f4 Rf8-f7 21.Rd1-d2 Bg7-f8
 20/39	00:03	 114,302k	32,565k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4
 21/39	00:03	 116,774k	32,582k	-0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Qe2-c4 Nc6-a5 26.Qc4-e2 Na5-c6 27.Qe2-c4 Nc6-a5 28.Qc4-e2 Na5-c6 29.Qe2-c4 Nc6-a5 30.Qc4-e2
 22/39	00:04	 141,382k	32,705k	-0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Qe2-c4 Nc6-a5 26.Qc4-e2 Na5-c6 27.Qe2-c4 Nc6-a5 28.Qc4-e2 Na5-c6 29.Qe2-c4 Nc6-a5 30.Qc4-e2 Na5-c6
 23/39	00:05	 182,340k	32,813k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Qe2-c4 Nc6-a5 26.Qc4-e2 Na5-c6 27.Qe2-c4 Nc6-a5 28.Qc4-e2 Na5-c6 29.Qe2-c4 Nc6-a5 30.Qc4-e2 Na5-c6 31.Qe2-c4
 24/39	00:06	 221,701k	32,918k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Ra8-f8 26.Qe2-c4 Nc6-a5 27.Qc4-e2 Na5-c6 28.Qe2-c4 Nc6-a5 29.Qc4-e2 Na5-c6 30.Qe2-c4 Nc6-a5 31.Qc4-e2 Na5-c6
 25/39	00:07	 236,338k	32,935k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Ra8-f8 26.Qe2-c4 Nc6-a5 27.Qc4-e2 Na5-c6 28.Qe2-c4 Nc6-a5 29.Qc4-e2 Na5-c6 30.Qe2-c4 Nc6-a5 31.Qc4-e2 Na5-c6 32.Qe2-c4
 26/44	00:08	 271,843k	33,043k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Ra8-f8 26.Qe2-c4 Nc6-a5 27.Qc4-e2 Na5-c6 28.Qe2-c4 Nc6-a5 29.Qc4-e2 Na5-c6 30.Qe2-c4 Nc6-a5 31.Qc4-e2 Na5-c6 32.Qe2-c4 Nc6-a5
 27/44	00:10	 365,290k	33,251k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Rb1-e1
 28/44	00:14	 492,629k	33,503k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Qb7-d7 26.Qe2-e4 Ra8-f8 27.Qe4-d5 Rf8-e8
 29/44	00:19	 656,491k	33,671k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Rb1-e1 Ra8-f8 26.Qe2-c4 Nc6-a5 27.Qc4-d3 Na5-c6 28.Qd3-c4 Nc6-a5 29.Qc4-d3 Na5-c6 30.Qd3-c4 Nc6-a5 31.Qc4-d3 Na5-c6 32.Qd3-c4 Nc6-a5 33.Qc4-d3 Na5-c6 34.Qd3-c4
 30/45	00:23	 806,126k	33,845k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Qb7-d7 26.Qe2-e4
 31/45	00:27	 925,388k	33,912k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Rb1-e1 Ra8-f8 26.Qe2-c4 Nc6-a5 27.Qc4-e2 Na5-c6 28.Qe2-c4 Nc6-a5 29.Qc4-e2 Na5-c6 30.Qe2-c4 Nc6-a5 31.Qc4-e2 Na5-c6 32.Qe2-c4 Nc6-a5 33.Qc4-e2 Na5-c6 34.Qe2-c4 Nc6-a5 35.Qc4-e2
 32/51	00:41	 1,399,530k	34,045k	+0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Qb7-d7 26.Qe2-e4 Ra8-d8 27.Qe4-d5 Rd8-e8 28.Re6xe8+ Qd7xe8 29.Rb1-e1 Qe8-d7 30.Qd5-d3 Nc6-d8 31.h2-h4 Bg7-f8 32.Re1-d1 Nd8-c6 33.h4-h5 g6-g5 34.Qd3-d5 Nc6-b4 35.Qd5-b3 Nb4-c6
 33/58	01:13	 2,522,139k	34,266k	-0.01	20.Bg5-f4 Rf8-f7 21.Qa4-c4 Na6-b8 22.Rd1-e1 Nb8-c6 23.Re1-e6 Nc6-a5 24.Qc4-e2 Na5-c6 25.Bf4-g3 Qb7-d7 26.Qe2-e4 Ra8-c8 27.Rb1-e1 Nc6-e5 28.Nf3xe5 f6xe5 29.Qe4-c4 b6-b5 30.Qc4-d5 Qd7-b7 31.Qd5-d1 Rc8-f8 32.h2-h4 c5-c4 33.h4-h5 g6xh5 34.Qd1xh5 Qb7-d7 35.Qh5-h3 c4-c3 36.Bg3xe5
 34/76	02:35	 5,416,527k	34,887k	+0.36	20.d6-d7
 35/76	02:37	 5,499,541k	34,912k	+0.36	20.d6-d7 Ra8-d8
 36/127	05:33	 14,890,111k	44,632k	+0.71	20.d6-d7 Ra8-d8 21.Rd1-d6 Na6-b8 22.Nf3-e5 Qb7-c7 23.Qa4-c4+ Kg8-h8 24.Rb1-d1 f6xe5 25.Bg5xd8 Qc7xd8 26.Rd6-e6 a7-a6 27.Qc4-d5 Bg7-f6 28.g2-g3
 37/127	07:16	 19,741,162k	45,254k	+0.88	20.d6-d7 Ra8-d8 21.Rd1-d6 Na6-b8 22.Nf3-e5 Qb7-c7 23.Qa4-c4+ Kg8-h8 24.Rb1-d1 f6xe5 25.Bg5xd8 Qc7xd8 26.Rd6-e6 Bg7-f6 27.Qc4-a4 Bf6-e7 28.Qa4xa7 c5-c4 29.Qa7xb6 c4-c3 30.Qb6xd8 Be7xd8 31.Re6xe5 c3-c2 32.Rd1-c1 Nb8xd7 33.Re5-b5 Bd8-f6 34.Rc1xc2 Rf8-a8 35.Rb5-b7 Nd7-f8 36.g2-g3 Kh8-g8 37.Kg1-g2 Ra8-a4 38.Rb7-c7
 38/127	07:42	 20,952,314k	45,284k	+0.89	20.d6-d7 Ra8-d8 21.Rd1-d6 Na6-b8 22.Nf3-e5 Qb7-c7 23.Qa4-c4+ Kg8-h8 24.Rb1-d1 f6xe5 25.Bg5xd8 Qc7xd8 26.Rd6-e6 Bg7-f6 27.Qc4-a4 Bf6-e7 28.Qa4xa7 c5-c4 29.Qa7xb6 c4-c3 30.Qb6xd8 Be7xd8 31.Re6xe5 c3-c2 32.Rd1-c1 Nb8xd7 33.Re5-b5 Bd8-f6 34.Rc1xc2 Rf8-a8 35.Rb5-b7 Nd7-f8 36.g2-g3 Kh8-g8 37.Kg1-g2 Ra8-a4 38.Rb7-c7 Ra4-a5
 39/127	11:23	 30,166,836k	44,152k	+1.17	20.d6-d7 Ra8-d8
 40/127	13:16	 35,456,189k	44,491k	+1.14	20.d6-d7 Ra8-d8 21.Rd1-d6 c5-c4 22.Qa4xc4+ Kg8-h8 23.Bg5-h4 g6-g5 24.Bh4-g3 Na6-b8 25.h2-h4 Nb8xd7 26.Rb1-e1 Nd7-e5
 41/127	18:09	 49,135,164k	45,084k	+1.19	20.d6-d7 Kg8-h8 21.Rd1-d6 c5-c4 22.Qa4xc4 Ra8-d8
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