Test position: Nice Kasparov move

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Moderator: Ras

yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: Test position: Nice Kasparov move

Post by yanquis1972 »

yes, i'm not sure it's objectively best. nevertheless amazing to me that an engine would like it.

New game
r2qk2r/1n3ppp/p2p1b2/3Np3/1P2P3/2P5/2N2PPP/3QKB1R b Kkq b3 0 1

Analysis by Komodo64 1.0 JA:

2...0-0 3.Bc4 a5 4.0-0 Bg5 5.b5 Nc5 6.Qf3
-/+ (-0.84) Depth: 6 00:00:00 3kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.b5 Nc5 6.Qf3
-/+ (-0.84) Depth: 6 00:00:00 3kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4
=/+ (-0.69) Depth: 7 00:00:00 5kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4
=/+ (-0.69) Depth: 7 00:00:00 5kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4
=/+ (-0.69) Depth: 8 00:00:00 10kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4
=/+ (-0.69) Depth: 8 00:00:00 10kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4 7.g3 Bh6
=/+ (-0.39) Depth: 9 00:00:00 16kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4 7.g3 Bh6
=/+ (-0.39) Depth: 9 00:00:00 16kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4 7.g3 Bh6 8.Ba6 Ra7 9.Ra1
=/+ (-0.33) Depth: 10 00:00:00 29kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bf4 7.g3 Bh6 8.Ba6 Ra7 9.Ra1
=/+ (-0.33) Depth: 10 00:00:00 29kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bh6 7.g3 Re8 8.Rd1 Kh8 9.Qc3
=/+ (-0.34) Depth: 11 00:00:00 52kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bh6 7.g3 Re8 8.Rd1 Kh8 9.Qc3
=/+ (-0.34) Depth: 11 00:00:00 52kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bh6 7.g3 Re8 8.Rd1 Kh8 9.Ba6 Ra7 10.Bb5 Re6 11.Qc3
=/+ (-0.29) Depth: 12 00:00:00 81kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bh6 7.g3 Re8 8.Rd1 Kh8 9.Ba6 Ra7 10.Bb5 Re6 11.Qc3
=/+ (-0.29) Depth: 12 00:00:00 81kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bh6 7.g3 Re8 8.Rd1 Kh8 9.Ba6 Ra7 10.Bb5 Re6 11.Nce3 Bg5 12.Nf5
=/+ (-0.26) Depth: 13 00:00:00 144kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 axb4 6.cxb4 Bh6 7.g3 Re8 8.Rd1 Kh8 9.Ba6 Ra7 10.Bb5 Re6 11.Nce3 Bg5 12.Nf5
=/+ (-0.26) Depth: 13 00:00:00 144kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Nb6 Rb8 10.Rc1 Qe8 11.Nd5 Qd7 12.Ra1 axb4 13.cxb4
=/+ (-0.27) Depth: 14 00:00:00 545kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Nb6 Rb8 10.Rc1 Qe8 11.Nd5 Qd7 12.Ra1 axb4 13.cxb4
=/+ (-0.27) Depth: 14 00:00:00 545kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Nb6 Rb8 10.Rc1 Qe8 11.Nd5 Qd7 12.Nb6 Qc6 13.Bd5 Qb5 14.Bc4
=/+ (-0.27) Depth: 15 00:00:00 734kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Nb6 Rb8 10.Rc1 Qe8 11.Nd5 Qd7 12.Nb6 Qc6 13.Bd5 Qb5 14.Bc4
=/+ (-0.27) Depth: 15 00:00:00 734kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Nb6 Rb8 10.Rc1 Qe8 11.Nd5 Qd7 12.Nb6 Qc6 13.Bd5 Qc7 14.Kg2 axb4 15.cxb4
=/+ (-0.33) Depth: 16 00:00:00 1385kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Nb6 Rb8 10.Rc1 Qe8 11.Nd5 Qd7 12.Nb6 Qc6 13.Bd5 Qc7 14.Kg2 axb4 15.cxb4
=/+ (-0.33) Depth: 16 00:00:00 1385kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Rc1 axb4 10.cxb4 Qg5 11.Qxg5 hxg5 12.Nb6 Ra3 13.Bd5 Rb8 14.Nc4 Ra4 15.b5 Kg8 16.Bxb7 Rxb7 17.Nxd6
=/+ (-0.29) Depth: 17 00:00:00 1871kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 Bh6 7.Nce3 Bxe3 8.Qxe3 h6 9.Rc1 axb4 10.cxb4 Qg5 11.Qxg5 hxg5 12.Nb6 Ra3 13.Bd5 Rb8 14.Nc4 Ra4 15.b5 Kg8 16.Bxb7 Rxb7 17.Nxd6
=/+ (-0.29) Depth: 17 00:00:00 1871kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 g6 7.Nce3 Bxe3 8.Qxe3 f5 9.exf5 Rxf5 10.Nb6 Rb8 11.Bd5 Qe7 12.Rc1 Rff8 13.Qd3 axb4 14.cxb4 Qg7 15.Ra1
= (-0.24) Depth: 18 00:00:02 6093kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.g3 g6 7.Nce3 Bxe3 8.Qxe3 f5 9.exf5 Rxf5 10.Nb6 Rb8 11.Bd5 Qe7 12.Rc1 Rff8 13.Qd3 axb4 14.cxb4 Qg7 15.Ra1
= (-0.24) Depth: 18 00:00:02 6093kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Qxe3 f5 10.exf5 Rxf5 11.Nb6 Ra7 12.Bd5 Rf4 13.Nc8 Qxc8 14.Qxa7 Rxb4 15.Qa3 Qc2 16.Qa8+ Kg7
=/+ (-0.31) Depth: 19 00:00:08 17246kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Qxe3 f5 10.exf5 Rxf5 11.Nb6 Ra7 12.Bd5 Rf4 13.Nc8 Qxc8 14.Qxa7 Rxb4 15.Qa3 Qc2 16.Qa8+ Kg7
=/+ (-0.31) Depth: 19 00:00:08 17246kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qd7 10.Nd5 Rab8 11.Bb5 Qd8 12.f3 Qg5 13.Nb6 Rg8 14.Qc3 f5 15.Bc4 Rgf8 16.Nd7
=/+ (-0.35) Depth: 20 00:00:14 29609kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qd7 10.Nd5 Rab8 11.Bb5 Qd8 12.f3 Qg5 13.Nb6 Rg8 14.Qc3 f5 15.Bc4 Rgf8 16.Nd7
=/+ (-0.35) Depth: 20 00:00:14 29609kN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qd7 10.Nd5 Rab8 11.Bb5 Qd8 12.Bc4 Qg5 13.Qc3 f5 14.exf5 Qxf5 15.f3 Qf7 16.Nb6 Qc7 17.Nd5 Qc6 18.Ne7 Qb6+ 19.Kh1 Ra8
=/+ (-0.41) Depth: 21 00:01:00 118mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qd7 10.Nd5 Rab8 11.Bb5 Qd8 12.Bc4 Qg5 13.Qc3 f5 14.exf5 Qxf5 15.f3 Qf7 16.Nb6 Qc7 17.Nd5 Qc6 18.Ne7 Qb6+ 19.Kh1 Ra8
=/+ (-0.41) Depth: 21 00:01:00 118mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qg5 10.g3 Rab8 11.Rc1 Rbc8 12.Rd1 Qd8 13.Nd5 f5 14.exf5 gxf5 15.Ba6 Rb8 16.Rc1 Rf7 17.Bc4 Qg5 18.f4
=/+ (-0.33) Depth: 22 00:01:26 171mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qg5 10.g3 Rab8 11.Rc1 Rbc8 12.Rd1 Qd8 13.Nd5 f5 14.exf5 gxf5 15.Ba6 Rb8 16.Rc1 Rf7 17.Bc4 Qg5 18.f4
=/+ (-0.33) Depth: 22 00:01:47 209mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qb8 10.Bd5 Qc7 11.Nc4 Rab8 12.Qc3 Kg7 13.g3 Rfc8 14.Qa3 h5 15.Qd3 Rh8 16.h4 Nd8 17.b5 Qc5 18.b6 Nc6 19.Ra1
=/+ (-0.34) Depth: 23 00:02:26 288mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qb8 10.Bd5 Qc7 11.Nc4 Rab8 12.Qc3 Kg7 13.g3 Rfc8 14.Qa3 h5 15.Qd3 Rh8 16.h4 Nd8 17.b5 Qc5 18.b6 Nc6 19.Ra1
=/+ (-0.34) Depth: 23 00:02:43 321mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Ra7 10.Nd5 Qg5 11.Rf1 f6 12.Qc3 Qh6 13.Nc7 Rc8 14.Be6 Rb8 15.Nb5 Ra4 16.Bb3 Raa8 17.Rc1 Qg5 18.Nc7 Rc8
=/+ (-0.33) Depth: 24 00:03:58 469mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Ra7 10.Nd5 Qg5 11.Rf1 f6 12.Qc3 Qh6 13.Nc7 Rc8 14.Be6 Rb8 15.Nb5 Ra4 16.Bb3 Raa8 17.Rc1 Qg5 18.Nc7 Rc8
=/+ (-0.33) Depth: 24 00:04:41 550mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qc8 10.Nd5 Rb8 11.Qc3 f6 12.Ra1 Qd7 13.Nb6 Qc7 14.Ra6 f5 15.exf5 gxf5 16.Qd3 Qg7 17.f3 Rf6 18.Qc2 f4 19.Ra7 Qg6 20.Bd3 Qg7
=/+ (-0.32) Depth: 25 00:07:39 896mN
2...0-0 3.Bc4 a5 4.0-0 Bg5 5.Qd3 Kh8 6.Rd1 axb4 7.cxb4 g6 8.Nce3 Bxe3 9.Nxe3 Qc8 10.Nd5 Rb8 11.Qc3 f6 12.Ra1 Qd7 13.Nb6 Qc7 14.Ra6 f5 15.exf5 gxf5 16.Qd3 Qg7 17.f3 Rf6 18.Qc2 f4 19.Ra7 Qg6 20.Bd3 Qg7
=/+ (-0.32) Depth: 25 00:09:24 1098mN
Top
zullil
Posts: 6442
Joined: Tue Jan 09, 2007 12:31 am
Location: PA USA
Full name: Louis Zulli

Re: Test position: Nice Kasparov move

Post by zullil »

Stockfish-1.6.2 (8 threads) is not impressed by the sac. It simply would castle, claiming a small advantage for itself:

Code: Select all

Searching: r2qk2r/1n3ppp/p2p1b2/3Np3/1P2P3/2P5/2N2PPP/3QKB1R b Kkq b3
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
 2     +1.58   00:00      243 O-O Bc4 
 3     +1.62   00:00      584 O-O Bc4 Bg5 
 4     +1.21   00:00      999 O-O Bc4 a5 O-O axb4 cxb4 
 5     +1.21   00:00     1679 O-O Bc4 a5 O-O axb4 cxb4 
 6     +1.21   00:00     2489 O-O Bc4 a5 O-O axb4 cxb4 
 7     +1.05   00:00     7267 O-O Bc4 a5 O-O axb4 cxb4 Bg5 Nce3 Rc8 Qh5 
 8     +1.21   00:00    30982 O-O Bc4 a5 O-O Bg5 Nce3 axb4 cxb4 Bxe3 Nxe3 Qg5 
                              Nd5 
 9     +1.25   00:00    41186 O-O Bc4 a5 O-O Bg5 Qf3 axb4 cxb4 Ra4 Nce3 
10     +1.21   00:00    59096 O-O Bc4 a5 O-O Bg5 Qf3 axb4 cxb4 Rc8 Nce3 Bxe3 
                              Nxe3 
11  <  +1.01   00:00    85221 O-O Bc4 Bg5 O-O a5 Qd3 a4 Ra1 
12     +0.81   00:00   839668 O-O Bc4 Bg5 O-O a5 Qd3 Qb8 Nce3 axb4 cxb4 Qd8 Rc1 
                              Rc8 Ra1 Bxe3 Nxe3 Qd7 
13     +0.81   00:01    2159k O-O Bc4 a5 O-O Bh4 Nce3 Bg5 Qg4 axb4 cxb4 Ra3 Rc1 
                              Bxe3 Nxe3 Qf6 
14     +0.69   00:01    2802k O-O Bc4 a5 O-O Bh4 Nce3 Bg5 Qg4 g6 Qh3 axb4 cxb4 
                              Ra3 Rc1 Qc8 Qf3 
15     +0.69   00:01    3735k O-O Bc4 a5 O-O Bh4 Nce3 Bg5 Qg4 g6 Qh3 axb4 cxb4 
                              Ra3 Rc1 h5 Qf3 Bxe3 Nxe3 
16     +0.69   00:01    6443k O-O Bc4 a5 O-O Bg5 Qd3 axb4 cxb4 Re8 Nce3 Re6 Rd1 
                              Rc8 Bb5 Bf4 Nf5 Qg5 Nxf4 exf4 
17  <  +0.48   00:02   14385k O-O Bc4 Bg5 O-O a5 Qd3 axb4 cxb4 Qb8 Qg3 h6 h4 
                              Bd8 Nce3 
18     +0.57   00:04   25393k O-O Bc4 Bg5 O-O a5 Qd3 axb4 cxb4 Qb8 Qg3 Qd8 Qd3 
                              g6 Nce3 Ra7 Rc1 Qb8 Rd1 h5 Nb6 Qe8 b5 Nc5 
19     +0.53   00:06   40686k O-O Bc4 Bg5 O-O a5 Qd3 axb4 cxb4 g6 Nce3 Ra7 Rc1 
                              Qb8 Qc3 Ra4 Bb5 Ra2 Bc4 Rc8 Bxa2 Rxc3 Rxc3 Qe8 
20     +0.48   00:09   67156k O-O Bc4 Bg5 O-O a5 Qd3 axb4 cxb4 g6 Nce3 Ra7 Rc1 
                              Qb8 Qc3 Qc8 g3 Qd7 f4 exf4 gxf4 Bh4 Nb6 
21     +0.48   00:18  132271k O-O Bc4 Bg5 O-O a5 Qd3 axb4 cxb4 Qb8 Qg3 Qd8 Qd3 
                              Ra7 Rd1 Qd7 Nce3 Rb8 Nf5 Qd8 Qh3 g6 Nh6+ Bxh6 
                              Qxh6 Rc8 Qe3 
22  <  +0.28   00:48  371084k O-O Bc4 Bh4 O-O a5 Qd3 Rb8 Ra1 Bg5 Ba6 axb4 cxb4 
                              Qd7 Qg3 f6 Bc4 Kh8 Ra7 Qc6 Bd3 Rfc8 b5 
23     +0.28   02:03  935274k O-O Bc4 Bh4 O-O a5 Qd3 Rb8 Ra1 Bg5 Nce3 Ra8 Re1 
                              Rc8 Ba6 Rb8 Bc4 Re8 Ba6 axb4 cxb4 Bxe3 Qxe3 Re6 
                              Ra1 Qc8 b5 Ra8 
24     +0.28   02:54    1320M O-O Bc4 Bh4 O-O a5 Qd3 Rb8 Ra1 Bg5 Nce3 Ra8 Re1 
                              Rc8 Ba6 Rb8 Bc4 Re8 Ra1 axb4 cxb4 Rc8 Ra7 Bxe3 
                              Nxe3 Qc7 b5 Qb6 
25     +0.28   06:36    2991M O-O Bc4 Bh4 O-O a5 Qd3 Rb8 Ra1 Bg5 Nce3 Ra8 Re1 
                              Rc8 Ra1 axb4 cxb4 Bxe3 Nxe3 Ra8 Rd1 Ra4 Qb3 Qd7 
                              Nf5 Qe8 Qg3 g6 
26     +0.28   10:09    4605M O-O Bc4 Bh4 O-O a5 Qd3 Rb8 Ra1 Bg5 Nce3 Ra8 Re1 
                              Rc8 Ra1 axb4 cxb4 Ra8 Rf1 Kh8 Nf5 g6 Nfe3 Kg7 Qe2 
                              f6 Rc1 f5 exf5 Bxe3 Nxe3 gxf5 
27     +0.28   23:28   10734M O-O Bc4 Bh4 O-O a5 Qd3 Rb8 Ra1 Bg5 Nce3 Ra8 Re1 
                              Rc8 Ra1 axb4 cxb4 Ra8 Rf1 Kh8 Nf5 g6 Nfe3 Kg7 Qe2 
                              f6 Bb5 f5 Bc6 Qb8 exf5 gxf5 
Nodes: 11642994714
Nodes/second: 7631212
Best move: O-O
Ponder move: Bc4
Top
yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: Test position: Nice Kasparov move

Post by yanquis1972 »

it would be interesting to see an engine-engine match b/w gaviota & another (such as stockfish) from this position, with gaviota given a substantial time handicap.

[d]r2q1rk1/1n3ppp/p2p1b2/3Np3/1P2P3/2P5/2N2PPP/3QKB1R w K - 1 3

Gaviota64:
1 00:00 9 9 -1.68 3.Nxf6+ Qxf6
1 00:00 42 42 -1.30 3.f4 exf4
1 00:00 51 51 -0.58 3.h4 Bxh4
1 00:00 52 52 +0.17 3.g4
1 00:00 55 55 +0.31 3.h3
1 00:00 56 56 +0.55 3.g3
1 00:00 62 62 +0.89 3.Nce3
2 00:00 123 123 +0.48 3.Nce3 :-(
2 00:00 273 273 -0.18 3.Nce3 Qd7
2 00:00 810 810 +0.27 3.Qf3 Qd7 4.Nxf6+ gxf6 5.Qxf6
2 00:00 947 947 +0.29 3.Qg4 g6
3 00:00 1.313 1.313 +0.45 3.Qg4 a5 4.Bc4 axb4 5.cxb4
4 00:00 2.713 2.713 +0.27 3.Qg4 Kh8 4.Qf3 Qd7 5.Nxf6 gxf6 6.Qxf6+ Kg8
5 00:00 12.687 1.268.700 +0.27 3.Qg4 Kh8 4.Qf3 Qd7 5.Nxf6 gxf6 6.Qxf6+ Kg8
5 00:00 18.214 607.133 +0.34 3.Bc4 a5 4.Qg4 axb4 5.cxb4 Kh8
6 00:00 42.930 1.073.250 +0.40 3.Bc4 Qd7 4.Nxf6+ gxf6 5.Ne3 Qc6 6.Qg4+ Kh8 7.O-O Rg8
6 00:00 61.433 1.023.883 +0.40 3.Bc4 Qd7 4.Nxf6+ gxf6 5.Ne3 Qc6 6.Qg4+ Kh8 7.O-O Rg8
7 00:00 107.803 1.078.030 +0.27 3.Bc4 a5 4.O-O axb4 5.cxb4 Qc8 6.Nxf6+ gxf6 7.Ne3 Qd7
7 00:00 187.702 1.042.788 +0.37 3.Bd3 a5 4.O-O axb4 5.cxb4 Ra2 6.Qg4 Kh8
7 00:00 214.975 1.074.875 +0.37 3.Bd3 a5 4.O-O axb4 5.cxb4 Ra2 6.Qg4 Kh8
8 00:00 266.584 1.025.323 +0.38 3.Bd3 a5 4.O-O axb4 5.cxb4 Qd7 6.Nxf6+ gxf6 7.Qf3 Ra2 8.Qxf6
8 00:00 375.974 1.105.805 +0.38 3.Bd3 a5 4.O-O axb4 5.cxb4 Qd7 6.Nxf6+ gxf6 7.Qf3 Ra2 8.Qxf6
9 00:00 876.557 1.123.791 +0.41 3.Bd3 a5 4.O-O axb4 5.cxb4 Qd7 6.Nce3 Bg5 7.Nb6 Qc6 8.Nxa8 Bxe3 9.fxe3 Rxa8
9 00:01 1.228.448 1.181.200 +0.41 3.Bd3 a5 4.O-O axb4 5.cxb4 Qd7 6.Nce3 Bg5 7.Nb6 Qc6 8.Nxa8 Bxe3 9.fxe3 Rxa8
10 00:01 2.025.404 1.191.414 +0.43 3.Bd3 a5 4.O-O axb4 5.cxb4 Qd7 6.Nxf6+ gxf6 7.Qf3 Qc6 8.Ne3 Qc3 9.Nd5
10 00:01 2.043.058 1.180.958 +0.43 3.Bd3 a5 4.O-O axb4 5.cxb4 Qd7 6.Nxf6+ gxf6 7.Qf3 Qc6 8.Ne3 Qc3 9.Nd5
11 00:01 2.123.812 1.179.895 +0.28 3.Bd3 a5 4.O-O axb4 5.cxb4 Bg5 6.Qg4 g6 7.Rb1 h5 8.Qg3 Ra2
11 00:04 5.542.942 1.124.329 +0.40 3.Bc4 a5 4.O-O axb4 5.cxb4 Bg5 6.Qe2 Qd7 7.Nb6 Qc6 8.Nxa8 Rxa8
11 00:11 13.941.464 1.220.793 +0.40 3.Bc4 a5 4.O-O axb4 5.cxb4 Bg5 6.Qe2 Qd7 7.Nb6 Qc6 8.Nxa8 Rxa8
12 00:30 36.565.680 1.218.856 +0.48 3.Bc4 a5 4.O-O Bg5 5.Qe2 Kh8 6.g3 axb4 7.cxb4 Rg8 8.h4 Bxh4 9.gxh4 Qxh4
12 00:54 67.298.927 1.246.276 +0.48 3.Bc4 a5 4.O-O Bg5 5.Qe2 Kh8 6.g3 axb4 7.cxb4 Rg8 8.h4 Bxh4 9.gxh4 Qxh4
13 01:38 121.227.847 1.237.018 +0.49 3.Bc4 a5 4.O-O Bg5 5.Qe2 Kh8 6.g3 axb4 7.cxb4 Qc8 8.Nb6 Qc7 9.Nxa8 Rxa8
13 03:23 255.164.395 1.256.967 +0.49 3.Bc4 a5 4.O-O Bg5 5.Qe2 Kh8 6.g3 axb4 7.cxb4 Qc8 8.Nb6 Qc7 9.Nxa8 Rxa8
14 05:49 428.001.912 1.226.366 +0.54 3.Bc4 a5 4.O-O Bg5 5.Qe2 axb4 6.cxb4 Re8 7.Rb1 Bf4 8.g3 Qg5 9.Kh1 Bd2 10.Qf3
14 13:20 1.007.201.625 1.260.577 +0.54 3.Bc4 a5 4.O-O Bg5 5.Qe2 axb4 6.cxb4 Re8 7.Rb1 Bf4 8.g3 Qg5 9.Kh1 Bd2 10.Qf3
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metax
Posts: 344
Joined: Wed Sep 23, 2009 5:56 pm
Location: Germany

Re: Test position: Nice Kasparov move

Post by metax »

yanquis1972 wrote:it would be interesting to see an engine-engine match b/w gaviota & another (such as stockfish) from this position, with gaviota given a substantial time handicap.
If you give Gaviota a substantial time handicap against Stockfish, - I am not sure. :)
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: Test position: Nice Kasparov move

Post by michiguel »

yanquis1972 wrote:another question to ask, for engines that prefer Nce3, is how they evaluate this position after a good think. this is kasparov's position after NxR b4

ivanhoe is showing near equal but nothing close to an edge for white after a couple minutes, suggesting simply 0-0 -.19.

[d]r2qk2r/1n3ppp/p2p1b2/3Np3/1P2P3/2P5/2N2PPP/3QKB1R b Kkq b3 0 2

imo it is is pretty amazing that gaviota found this move. miguel must've but a lot of positional knowledge in her (?)
Or a complete disregard for material :-)

Gaviota values piece activity very much. I just checked and the main reasons for choosing Rxb7 are 1) Big bonus for Nd5, 2) Big penalty for Nb7 (it is out of the game after b4) 3) no bishop pair bonus after the trade 4) black stays with a bad bishop

All this together is more than 2 pawns, enough to justify the trade deficit (just below two pawns).

Sometimes, all this backfires. In this case, I believe Gaviota is right.

Miguel
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michiguel
Posts: 6401
Joined: Thu Mar 09, 2006 8:30 pm
Location: Chicago, Illinois, USA

Re: Test position: Nice Kasparov move

Post by michiguel »

metax wrote:
yanquis1972 wrote:it would be interesting to see an engine-engine match b/w gaviota & another (such as stockfish) from this position, with gaviota given a substantial time handicap.
If you give Gaviota a substantial time handicap against Stockfish, - I am not sure. :)
I think that he meant to give enough time to compensate for the difference in strength (which is huge). The difference should be near 1:100 (~500 elo points?).

Miguel
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