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Old Shirov position from 1995

https://talkchess.com/viewtopic.php?t=40614

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Re: Old Shirov position from 1995

Posted: Mon Oct 03, 2011 2:54 am
by zullil
Critter goes for Bf6:

Code: Select all

Critter Chess v1.2.1 64-bit SSE4
By Richard Vida, Slovakia

GTB Init OK

Hash table:  67108864 entries of 16 bytes = 1024 MB total
Eval cache:     32768 entries of  8 bytes =  256 KB total
Pawn hash :     65536 entries of 32 bytes =    2 MB total

8 cpu(s) detected

Opening book: "book.cbk" - 53436 entries [native]

setoption name Hash value 4096
Hash table: 268435456 entries of 16 bytes = 4096 MB total
setboard r7/pp3ppk/1np1r2p/4P3/2q1PP1B/2P4R/3Q2PP/4R2K w - - 5 24
go infinite
 2/ 2  00:00       105    5000  +0.71 Bf2 Rae8 Rd3
 3/ 4  00:00       359   16318  +0.71 Bf2 Rae8 Rd3
 4/ 5  00:00       810   33750  +0.69 Bf2 Rae8 Rd3 c5
 5/ 6  00:00      1202   50083  +0.67 Bf2 Rae8 Rd3 c5 Kg1
 6/ 6  00:00      1728   69120  +0.64 Bf2 Rae8 Rd3 c5 Kg1 a5
 7/ 9  00:00      2939  101344  +0.59 Bf2 Rae8 Rd3 c5 Kg1 a5 Qe2
 8/12  00:00     13750  214843  +0.56 Bf2 c5 Qe3 a5 Rb1 Qa2 Rd1 Qc2
 8/12  00:00     21540  247586  +0.62 Rd3 Rae8 Kg1 c5 Bf2 Na4 Qc2 Rb6
 9/19- 00:00     71396  297483  +0.53 Rd3 Rae8 Kg1 c5 Bf2 Na4 Qc2 Rb6
 9/19  00:00     83401  300003  +0.55 Rd3 Rae8 Kg1 c5 Qe3 a5 Rb1 a4 Bd8 Qa6 Rbd1
10/19  00:00    125424  321600  +0.52 Rd3 Rae8 Qe3 Qa6 Red1 g5 fxg5 Nc4 Qf2 Nxe5 R3d2
10/22+ 00:00    291952  439025  +0.63 Bg5 Kg8 f5 Rxe5 Bxh6 gxh6 Rxh6 f6 Rg6+ Kf7 Qh6
10/22+ 00:00    322606  461525  +0.72 Bg5 Kg8 f5 Rxe5 Bxh6 gxh6 Rxh6 f6 Rg6+ Kf7 Qh6
10/22+ 00:00    352937  483475  +0.85 Bg5 Kg8 f5 Rxe5 Bxh6 gxh6 Rxh6 f6 Rg6+ Kf7 Qh6 Ke8 Qh8+ Kd7 Rd1+ Kc7 Rg7+
10/27+ 00:00    392618  505951  +1.04 Bg5 Kg8 f5 Rxe5 Bxh6 gxh6 Rxh6 f6 Rg6+ Kf7 Qh6 Rg8 Qh7+ Kf8 Rxf6+ Ke8 Qxb7
10/27+ 00:00    426156  523533  +1.32 Bg5 Kg8 f5 Rxe5 Bxh6 gxh6 Rxh6 f6 Rg6+ Kf7 Qh6 Rg8 Qh7+ Kf8 Rxf6+ Ke8 Qxb7
10/27  00:00    489250  534115  +1.50 Bg5 Kg8 f5 Rxe5 Bxh6 Rxe4 Bxg7 Rf4 Bd4 Rf1+ Rxf1 Qxf1+ Bg1 Qxf5 Qh6 f6 Rg3+ Kf7 Qg7+ Ke8 Re3+ Kd8 Qxb7
11/27- 00:00    499374  534661  +1.41 Bg5 Kg8 f5 Rxe5 Bxh6 Rxe4 Bxg7 Rf4 Bd4 Rf1+ Rxf1 Qxf1+ Bg1 Qxf5 Qh6 f6 Rg3+ Kf7 Qg7+ Ke8 Re3+ Kd8 Qxb7
11/27- 00:00    502960  536204  +1.31 Bg5 Kg8 f5 Rxe5 Bxh6 Rxe4 Bxg7 Rf4 Bd4 Rf1+ Rxf1 Qxf1+ Bg1 Qxf5 Qh6 f6 Rg3+ Kf7 Qg7+ Ke8 Re3+ Kd8 Qxb7
11/27- 00:00    510500  537368  +1.17 Bg5 Kg8 f5 Rxe5 Bxh6 Rxe4 Bxg7 Rf4 Bd4 Rf1+ Rxf1 Qxf1+ Bg1 Qxf5 Qh6 f6 Rg3+ Kf7 Qg7+ Ke8 Re3+ Kd8 Qxb7
11/27  00:00    552720  555497  +1.50 Bg5 Kg8 f5 Rxe5 Bxh6 Rxe4 Bxg7 Rf4 Bd4 Rf1+ Rxf1 Qxf1+ Bg1 Qxf5 Qh6 f6 Rg3+ Kf7 Qg7+ Ke8 Re3+ Kd8 Qxb7
12/36+ 00:01    847255  664513  +1.59 Bg5 Kg8 f5 Rxe5 Bxh6 Rxe4 Bxg7 Rf4 Bd4 Rf1+ Rxf1 Qxf1+ Bg1 Qxf5 Qh6 f6 Rg3+ Kf7 Qg7+ Ke8 Re3+ Kd8 h4 Qf1 Qxb7
12/36  00:01    946726  683063  +1.55 Bg5 Kg8 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rxh6 Qg4 Rf1 Nc4 Qf2 Qf4 Qxf4 exf4 Rxf4 Kg7 Rff6
13/36  00:01   1272581  810561  +1.64 Bg5 Kg8 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rxh6 Qg4 Rf1 Nc4 Qf2 Qf4 Qxf4 exf4 Rxf4 Kg7 Rfh4 Rf8 Rh7+ Kg6 R4h6+ Kg5
14/36+ 00:01   2169287 1143535  +1.74 Bg5 Kg8 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rxh6 Qg4 Rf1 Nc4 Qf2 Qf4 Qxf4 exf4 Rxf4 Kg7 Rfh4 Rf8 Rh7+ Kg6 R4h6+ Kg5
14/36+ 00:02   2834493 1386060  +1.84 Bg5 Kg8 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rxh6 Qg4 Rf1 Nc4 Qf2 Qf4 Qxf4 exf4 Rxf4 Kg7 Rfh4 Rf8 Rh7+ Kf6 Kg1
14/36  00:02   3902599 1697520  +1.74 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxg7+ Kxg7 Rxc3 Nd7 Rg3+ Kf8 e6 fxe6 Rg6 exf5 exf5 Rd8 Rxh6 Kg7 Ree6 Ne5 Rd6
15/36  00:02   4404202 1779475  +1.74 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxg7+ Kxg7 Rxc3 Nd7 Rg3+ Kf8 e6 fxe6 Rg6 exf5 exf5 Rd8 Rxh6 Kg7 Ree6 Ne5 Rd6
16/42+ 00:03   7018624 2326358  +1.85 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxg7+ Kxg7 Rxc3 Nd7 Rg3+ Kf8 e6 fxe6 Rg6 exf5 exf5 Re8 Rxe8+ Kxe8 Re6+ Kf7 Rxh6 Nf6 g3 c5 Kg2 a5
16/42  00:03   7734417 2429151  +1.70 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra1 Rxe5 Rxa7 Rb5 Ra1 Nd7 Kg1 Kg7 Rg3+ Kf6 Rh3 Ke5 Rxh6 Kxe4 g4 Rb2 Ra4+ Ke5
17/42+ 00:03  10340778 2957042  +1.80 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra1 Rxe5 Rxa7 Rb5 Ra1 Nd7 Kg1 Kg7 Rg3+ Kf6 Rh3 Ke5 Rxh6 Kxe4 g4 Rb2 Ra4+ Ke5
17/44+ 00:03  13814334 3561313  +1.91 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra1 Rxe5 Rxa7 Rb5 Ra1 Nd7 Kg1 Kg7 Rg3+ Kf6 Rh3 Ke5 Rxh6 Kxe4 g4 Rb2 Ra4+ Ke5
17/51  00:04  17923019 4076192  +1.92 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra3 Nc8 e6 fxe6 f6 Rd8 e5 c5 Kg1 c4 Kf2 Kg8 Rg3+ Kf8 Rg6 h5 Rh6 Rd2+ Re2 Rxe2+ Kxe2
18/51  00:05  30165864 5267306  +2.04 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra3 Nc8 e6 fxe6 f6 Rd8 e5 c5 Kg1 b6 Kf2 a5 Rg3 Rd7 Rc1 Rf7 Ke3 a4 Ke4 Na7
19/51  00:06  41106410 5971297  +2.04 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra3 Nc8 e6 fxe6 f6 Rd8 e5 Rd7 Kg1 a6 Rg3 Nb6 Re4 h5 Kf2 Nd5 Rh4 Kh6 Rg8 b5 Rh8+ Kg6 R4xh5
20/51  00:09  70398450 7157223  +2.09 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra3 Nc8 e6 fxe6 f6 Rd8 e5 Rd7 Kg1 a6 Rg3 Nb6 Re4 h5 Kf2 Nd5 Rh4 Kh6 Rg8 Rf7 Rh8+ Kg6 R4xh5
21/51  00:12  96375293 7678082  +2.09 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra3 Nc8 e6 fxe6 f6 Rd8 e5 Rd7 Kg1 a6 Rg3 Nb6 Re4 h5 Kf2 Nd5 Rh4 Kh6 Rg8 Rf7 Rh8+ Kg6 R4xh5
22/53  00:17 143552275 8361619  +2.09 Bg5 Rg6 f5 Rxg5 Qxg5 Qxc3 Qxh6+ gxh6 Rxc3 Re8 Ra3 Nc8 e6 fxe6 f6 Rd8 e5 Rd7 Kg1 a6 Rg3 Nb6 Re4 h5 Kf2 Nd5 Rh4 Kh6 Rg8 Rf7 Rh8+ Kg6 R4xh5
22/59+ 00:28 250181206 8919752  +2.22 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Rf8 Rf5 Nc4 Qf2 f6 Qh4 Kg7 Qxh6+ Kf7 Qh7+ Ke8 Qxb7 Qd7 Qb8+ Qd8 Qb3 Nd6 Rf1 Qe7 Qa4 Qc7 Rh6 a5 Rhxf6 Rxf6 Rxf6 Ke7 Rg6
22/62+ 00:32 291424003 9008748  +2.35 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Rf8 Rf5 Nc4 Qf2 f6 Qh4 Kg7 Qxh6+ Kf7 Qh7+ Ke8 Qxb7 Qd7 Qb8+ Qd8 Qb3 Nd6 Rf1 Qe7 Qa4 Qc7 Rh6 a5 Rhxf6 Rxf6 Rxf6 Ke7 Rg6
22/62+ 00:39 364373198 9206458  +2.54 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Rf8 Rf5 Nc4 Qf2 f6 Qh4 Kg7 Qxh6+ Kf7 Qh7+ Ke8 Qxb7 Qd7 Qb3 Nb6 Rhf3 Qe7 Rf1 Qd6 Ra1 Qe7 Qa2 Nc8 Qa6 Nd6 Qxc6+ Kf7
22/80+ 01:12 669266353 9176077  +2.83 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Rf8 Rf5 Kg7 Rg3+ Kh7 Qd1 f6 Rh3 Qd7 Qc1 Kg8 Rxh6 Qd6 Rg5+ Kf7 Rh7+ Ke6 Rgg7 Qd3 Re7+ Kd6 c4 Qxc4 Rd7+ Kc5 Qg1+ Kb5 Rd2 Qxe4 Rb2+ Kc4 Rxb7 Ra8 Qc1+ Kd5 Qd1+ Kc5 R7xb6 axb6 Rc2+ Qxc2 Qxc2+ Kd6 Kg1 b5 h4 Ra3 Qf5
22/80+ 01:47 1024955902 9556431  +3.25 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Rf8 Rf5 Kg7 Rg3+ Kh7 Qd1 f6 Rh3 Qd7 Qc1 Kg8 Rxh6 Qd6 Rg5+ Kf7 Rh7+ Ke6 Rgg7 Qd3 Re7+ Kd6 c4 Qxc4 Rd7+ Kc5 Qg1+ Kb5 Rd2 Qxe4 Rb2+ Kc4 Rxb7 Ra8 Qc1+ Kd5 Qd1+ Kc5 R7xb6 axb6 Rc2+ Qxc2 Qxc2+ Kd6 Kg1 b5 h4 Ra3
22/80+ 02:45 1636133680 9856286  +3.89 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Rf8 Rf5 Kg7 Rg3+ Kh7 Qd1 f6 Rh3 Qd7 Qc1 Kg8 Rxh6 Qd6 h4 Rf7 Rg6+ Kf8 Qh6+ Ke7 Rgxf6 Qxf6 Rxf6 Rxf6 Qg7+ Rf7 Qxe5+ Kd7 Qb8 Ke6 Qxa7 Nc4 h5 Nd6 Qe3 Nc4 Qc5 Ne5 Kg1 Rf4
22/80  04:16 2576673775 10060966  +4.29 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Nc4 Rxh6+ Qxh6 Rxf7+ Kg6 Rf6+ Kxf6 Qxh6+ Kf7 Qh7+ Ke6 Qxb7 Rf8 Qxc6+ Nd6 Qd5+ Kd7 g3 Rc8 Qxe5 Re8 Qd4 Rxe4 Qxa7+ Ke6 Kg2 Re2+ Kh3 Re4 g4 Kf6 Qf2+ Kg7 Qc5 Nf7
23/80  06:00 3706825959 10270918  +4.47 Bf6 gxf6 f5 fxe5 fxe6 Qxe6 Rf1 Nc4 Rxh6+ Qxh6 Rxf7+ Kg6 Rf6+ Kxf6 Qxh6+ Kf7 Qh7+ Ke6 Qxb7 Rf8 Qxc6+ Nd6 Qd5+ Kd7 g3 Rc8 Qxe5 Re8 Qd4 Rxe4 Qxa7+ Ke6 Kg2 Re2+ Kh3 Re4 g4 Kf6 Qf2+ Kg7 g5

Re: Old Shirov position from 1995

Posted: Mon Oct 03, 2011 9:20 pm
by muxecoid
JuLieN wrote:I found an interesting position, browsing Talkchess' archives. it was first submitted by Dirk Frickenschmidt in 1997.

[Event ""]
[Site "Amsterdam Donner"]
[Date "1995"]
[Round "6"]
[White "Shirov,A"]
[Black "Piket,J"]
[WhiteElo "2695"]
[BlackElo "2625"]
[ECO "D52"]
[Result "1-0"]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 e6 5.Bg5 Nbd7 6.e3 Qa5 7.cxd5
Nxd5 8.Qd2 Bb4 9.Rc1 h6 10.Bh4 O-O 11.Bd3 Re8 12.a3 Bxc3 13.bxc3
Qxa3 14.O-O e5 15.Nxe5 Nxe5 16.dxe5 Qc5 17.Kh1 Be6 18.e4 Nb6
19.f4 Bc4 20.Rf3 Bxd3 21.Rxd3 Qc4 22.Re1 Kh7 23.Rh3 Re6 24.Bf6
gxf6 25.f5 fxe5 26.fxe6 Qxe6 27.Rf1 Nc4 28.Rxh6+ Qxh6 29.Rxf7+
Kg6 30.Rf6+ Kxf6 31.Qxh6+ Ke7 32.Qg7+ Kd6 33.Qxb7 Nb6 34.h4 Kc5
35.h5 a5 36.h6 1-0
Position after Black's 23rd move (Re6??). What is white's best move, found by Shirov?
[d]r7/pp3ppk/1np1r2p/4P3/2q1PP1B/2P4R/3Q2PP/4R2K w - - 5 24

Shirov is a great provider of test positions! ;)
What a great position. When told it is test position I found Bf6 immediately, following f5 looks really menacing to human eye, but I would never ever find such move in real games.

I'm surprised to see rather strong engines fail or take long to find it.
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