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Up Topic The Rybka Lounge / Test Positions / Test position: Kasparov-Pribyl (1980)
- - By Clementin (*) Date 2020-03-26 05:39 Upvotes 1
This Kasparov's game is famous, in particular white's 20th move:

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


My main line runs like this: 20.d7! Rad8 21.Rd6!! . Can your comp find it?!!

[Event "EUR-chT (Men) 7th"]
[Site "Skara SWE"]
[Date "1980.01.??"]
[EventDate "?"]
[Round "5"]
[Result "1-0"]
[White "Garry Kasparov"]
[Black "Josef Pribyl"]
[ECO "D85"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Nf3 b6 8.Bb5+ c6 9.Bc4 O-O 10.O-O Ba6 11.Bxa6 Nxa6 12.Qa4
Qc8 13.Bg5 Qb7 14.Rfe1 e6 15.Rab1 c5 16.d5 Bxc3 17.Red1 exd5
18.exd5 Bg7 19.d6 f6 20.d7 fxg5 21.Qc4+ Kh8 22.Nxg5 Bf6 23.Ne6
Nc7 24.Nxf8 Rxf8 25.Rd6 Be7 26.d8=Q Bxd8 27.Qc3+ Kg8 28.Rd7
Bf6 29.Qc4+ Kh8 30.Qf4 Qa6 31.Qh6 1-0

See also: http://www.talkchess.com/forum3/viewtopic.php?t=46394

https://books.google.ca/books?id=CweQQhsRvBMC&pg=PA213&lpg=PA213&dq=kasparov-Pribyl&source=bl&ots=fiO5k2hErU&sig=ACfU3U0LWxnkOHyb2_o7pgTroQBpbpkUIA&hl=fr&sa=X&ved=2ahUKEwinsa2N_bXoAhWsnOAKHYSXCa0Q6AEwDXoECAcQAQ#v=onepage&q=kasparov-Pribyl&f=false
Parent - - By dorszcz (**) Date 2020-03-29 18:19
Xiphos 0.6 saw 20.d7 Rad8 21.Rd6 after 1 minute, but with wrong continuation and score 0.13 only. I waited 45 minutes but nothing changed.
Parent - By Clementin (*) Date 2020-04-02 12:27
Hi see. My comp needed about 5 minutes to find 20.d7! and a few more to work out 21.Rd6! with Stockfish 11 (CorChess):

1: Garry Kasparov - Josef Pribyl 1-0, EUR-chT (Men) 7th 1980
r4rk1/pq4bp/np1P1pp1/2p3B1/Q7/5N2/P4PPP/1R1R2K1 w - - 0 1


Analysis by CorChess 6.0 240320 64 POPCNT:

...

20.Bf4 Nb4 21.Nd4 Qe4 22.Bg3 Rf7 23.Nb5 Qc6 24.a3 a6 25.Nc3 b5 26.Qb3 Nd3 27.Nxb5 c4 28.Nd4 Qd5 29.Qb6 f5 30.Nc6 Qe4 31.Ne7+ Kh8 32.f3 Qe6 33.Re1 Nxe1 34.Rxe1 Qd7 35.Qc7 Qxc7 36.dxc7 Rff8 37.Rc1 f4 38.Be1 Rae8 39.Nd5 Rf5 40.Rxc4 Rxe1+ 41.Kf2 Re8 42.c8Q Rxc8 43.Rxc8+ Bf8 44.Nb4 Kg7 45.Ra8 Ra5 46.Nxa6 Rxa3
  The position is equal: = (0.12)  Depth: 38/63   00:04:19  1080MN, tb=2494

20.d7
  The position is equal: = (0.18 ++)  Depth: 39/67   00:05:02  1263MN, tb=6697

20.d7
  White has an edge: = (0.25 ++)  Depth: 39/67   00:05:09  1292MN, tb=6705

20.d7
  White is slightly better: +/= (0.35 ++)  Depth: 39/67   00:05:11  1301MN, tb=6705

20.d7
  White is slightly better: +/= (0.50 ++)  Depth: 39/67   00:05:15  1321MN, tb=6711

20.d7 Rad8 21.Qc4+ Kh8 22.Ne5 fxg5 23.Nf7+ Rxf7 24.Qxf7 Qc6 25.Rb3 Qf6 26.Qe8+ Qf8 27.Re3 Nc7 28.Rde1 Nxe8 29.dxe8Q Bf6 30.Qxf8+ Rxf8 31.Re8 Kg7 32.Rxf8 Kxf8 33.Re6 Kf7 34.Rc6 Be5 35.Kf1 Ke7 36.Rc8 Kd6 37.Ra8 a5 38.Ra7 b5 39.Rxh7 c4 40.Rh6 b4 41.Rxg6+ Kd5 42.Rb6 Kc5 43.Rb7 Bxh2 44.g3 g4 45.Kg2 Kc6 46.Rh7
  White is slightly better: +/= (0.53)  Depth: 39/67   00:05:19  1338MN, tb=6737

20.d7 Rad8 21.Qc4+ Kh8 22.Ne5 fxg5 23.Nf7+ Rxf7 24.Qxf7 Qc6 25.Rb3 Qf6 26.Qe8+ Qf8 27.Re3 Nc7 28.Rde1 Nxe8 29.dxe8Q Bf6 30.Qxf8+ Rxf8 31.Re8 Kg7 32.Rxf8 Kxf8 33.Re6 Kf7 34.Rc6 Be5 35.Kf1 Ke7 36.Rc8 Kd6 37.Ra8 a5 38.Ra7 b5 39.Rxh7 c4 40.Rh6 b4 41.Rxg6+ Kd5 42.Rb6 Kc5 43.Rb7 Bxh2 44.g3 g4 45.Kg2 Kc6 46.Rh7
  White is slightly better: +/= (0.46 --)  Depth: 40/42   00:06:06  1540MN, tb=7460

20.d7 Rad8 21.Qc4+ Kh8 22.Ne5 fxg5 23.Nf7+ Rxf7 24.Qxf7 Qc6 25.Rb3 Qf6 26.Qe8+ Qf8 27.Re3 Nc7 28.Rde1 Nxe8 29.dxe8Q Bf6 30.Qxf8+ Rxf8 31.Re8 Kg7 32.Rxf8 Kxf8 33.Re6 Kf7 34.Rc6 Be5 35.Kf1 Ke7 36.Rc8 Kd6 37.Ra8 a5 38.Ra7 b5 39.Rxh7 c4 40.Rh6 b4 41.Rxg6+ Kd5 42.Rb6 Kc5 43.Rb7 Bxh2 44.g3 g4 45.Kg2 Kc6 46.Rh7
  White is slightly better: +/= (0.38 --)  Depth: 40/59   00:06:42  1699MN, tb=8161

20.d7 Rad8 21.Qc4+ Kh8 22.Ne5 fxg5 23.Nf7+ Rxf7 24.Qxf7 Qc6 25.Rb3 Qf6 26.Qe8+ Qf8 27.Re3 Nc7 28.Rde1 Nxe8 29.dxe8Q Bf6 30.Qxf8+ Rxf8 31.Re8 Kg7 32.Rxf8 Kxf8 33.Re6 Kf7 34.Rc6 Be5 35.Kf1 Ke7 36.Rc8 Kd6 37.Ra8 a5 38.Ra7 b5 39.Rxh7 c4 40.Rh6 b4 41.Rxg6+ Kd5 42.Rb6 Kc5 43.Rb7 Bxh2 44.g3 g4 45.Kg2 Kc6 46.Rh7
  White is slightly better: +/= (0.46 ++)  Depth: 40/65   00:07:11  1827MN, tb=10139

20.d7 Rad8 21.Qc4+ Kh8 22.Ne5 fxg5 23.Nf7+ Rxf7 24.Qxf7 Qc6 25.Rb3 Qf6 26.Qe8+ Qf8 27.Re3 Nc7 28.Rde1 Nxe8 29.dxe8Q Bf6 30.Qxf8+ Rxf8 31.Re8 Kg7 32.Rxf8 Kxf8 33.Re6 Kf7 34.Rc6 Be5 35.Kf1 Ke7 36.Rc8 Kd6 37.Ra8 a5 38.Ra7 b5 39.Rxh7 c4 40.Rh6 b4 41.Rxg6+ Kd5 42.Rb6 Kc5 43.Rb7 Bxh2 44.g3 g4 45.Kg2 Kc6 46.Rh7
  White is slightly better: +/= (0.66 ++)  Depth: 40/65   00:07:40  1950MN, tb=11501

20.d7 Rad8 21.Qc4+ Kh8 22.Ne5 fxg5 23.Nf7+ Rxf7 24.Qxf7 Qc6 25.Rb3 Qf6 26.Qe8+ Qf8 27.Re3 Nc7 28.Rde1 Nxe8 29.dxe8Q Bf6 30.Qxf8+ Rxf8 31.Re8 Kg7 32.Rxf8 Kxf8 33.Re6 Kf7 34.Rc6 Be5 35.Kf1 Ke7 36.Rc8 Kd6 37.Ra8 a5 38.Ra7 b5 39.Rxh7 c4 40.Rh6 b4 41.Rxg6+ Kd5 42.Rb6 Kc5 43.Rb7 Bxh2 44.g3 g4 45.Kg2 Kc6 46.Rh7
  White is better: +/- (0.92 ++)  Depth: 40/65   00:07:59  2035MN, tb=13388

20.d7 Rad8 21.Rd6 Nb8 22.Ne5 Qc7 23.Qc4+ Kh8 24.Rbd1 fxe5 25.Qe6 e4 26.Be7 Rg8 27.Bxd8 Qxd8 28.Qxe4 Rf8 29.Qe8 Na6 30.Qe3 Nb8 31.Re6 Nxd7 32.Red6 Rf7 33.Qe6 Qf6 34.Qe8+ Rf8 35.Qe3 Qf5 36.Rxd7 Bd4 37.R1xd4 cxd4 38.Qxd4+ Qf6 39.Qxf6+ Rxf6 40.Rxa7 Rc6 41.Kf1 Rc2 42.g3 Kg8 43.a4 g5 44.Kg2 Ra2 45.Kf3 b5 46.a5 b4 47.Rb7
  White is better: +/- (1.10)  Depth: 40/65   00:08:46  2237MN, tb=16476

...

20.d7 Rad8 21.Rd6 Nb8 22.Qc4+ Kh8 23.Ne5 Qc7 24.Rbd1 fxe5 25.Qe6 e4 26.Be7 Nxd7 27.Bxf8 Rxf8 28.Rxd7 Qf4 29.R1d2 Bd4 30.Qe7 Qh6 31.R2xd4 cxd4 32.Qe5+ Kg8 33.Qd5+ Kh8 34.Qxd4+ Kg8 35.g3 g5 36.Qxe4 Rf7 37.Qa8+ Rf8 38.Qd5+ Kh8 39.Rxa7 Qf6 40.Qd2 Qa1+ 41.Kg2 Qe5 42.Qc2 Qf5 43.Qe2 h6 44.a4 Rf7 45.Ra6 Qf6 46.Qe3 Qc6+ 47.Kg1 Rd7 48.Qb3 Qc1+ 49.Kg2 Qc6+ 50.Qf3 Qxf3+ 51.Kxf3 Rd4 52.Rxb6 Rxa4 53.Rxh6+ Kg7 54.Rc6 Kf7 55.Rb6 Rd4 56.h3 Ra4 57.Rh6 Rb4 58.Rc6 Rd4 59.Ke3 Rd1 60.Ra6 Ke7
  White is clearly better: +- (1.88 --)  Depth: 56/85   05:32:59  87155MN, tb=13901227

20.d7 Rad8 21.Rd6 Nb8 22.Qc4+ Kh8 23.Ne5 Qc7 24.Rbd1 fxe5 25.Qe6 e4 26.Be7 Nxd7 27.Bxf8 Rxf8 28.Rxd7 Qf4 29.R1d2 Bd4 30.Qe7 Qh6 31.R2xd4 cxd4 32.Qe5+ Kg8 33.Qd5+ Kh8 34.Qxd4+ Kg8 35.g3 g5 36.Qxe4 Rf7 37.Qa8+ Rf8 38.Qd5+ Kh8 39.Rxa7 Qf6 40.Qd2 Qa1+ 41.Kg2 Qe5 42.Qc2 Qf5 43.Qe2 h6 44.a4 Rf7 45.Ra6 Qf6 46.Qe3 Qc6+ 47.Kg1 Rd7 48.Qb3 Qc1+ 49.Kg2 Qc6+ 50.Qf3 Qxf3+ 51.Kxf3 Rd4 52.Rxb6 Rxa4 53.Rxh6+ Kg7 54.Rc6 Kf7 55.Rb6 Rd4 56.h3 Ra4 57.Rh6 Rb4 58.Rc6 Rd4 59.Ke3 Rd1 60.Ra6 Ke7
  White is clearly better: +- (1.99 ++)  Depth: 56/85   05:53:29  92409MN, tb=14251347

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

(Infaillible,  27.03.2020)
Parent - - By Vinvin (***) Date 2020-04-20 15:41 Upvotes 1
I posted an answer here : http://www.talkchess.com/forum3/viewtopic.php?p=840634#p840634

3 runs with 2 recent engines on an i7-6*4 GHz.

Bluefish-XI : 3m35s ; 4m4s ; 4m23s. Average = 4min 1sec
Stockfish_2020_04_15 : 41m48s ; 1h13m36s ; 5m12s. Average = 40min 12 sec.
Parent - By MrKris (***) Date 2020-04-22 05:50
Thank for the Bluefish tip!

Crystal-200420: no (20.Bf4) @ 12:55 (mins:secs)

Honey-XI-r1: 44/71+ 21,619knps 03:00 +0.09 20.d7 {w/ 21.Rd6 ~9 mins}

Bluefish-XI-r1: 39/66+ 02:15 +0.20 20.d7
41/40 03:12 +0.73 20.d7 Rad8 21.Rd6 etc.
Up Topic The Rybka Lounge / Test Positions / Test position: Kasparov-Pribyl (1980)

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