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Up Topic The Rybka Lounge / Test Positions / Strong position for engines
- - By darmar (**) Date 2016-08-23 04:52
How many hours with strong hardware to find winner move?
[url=]
r3kb1r/3qnp2/1Qp1p2p/2PpP1p1/P2Nb1P1/8/3BBP1P/R4RK1 w kq - 0 22
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Parent - - By user923005 (****) [us] Date 2016-08-23 18:53
Stockfish matefinder liked f3 from ply 1 and stuck with it through ply 42 with an advantage of 1.6 pawns.

This is with a single thread, so with 12 threads on a fast machine just a few minutes to see an advantage of a full pawn.


Searching:
r3kb1r/3qnp2/1Qp1p2p/2PpP1p1/P2Nb1P1/8/3BBP1P/R4RK1 w kq - 0 1

infinite: 0 ponder: 0 time: 0 increment: 0 moves to go: 0

1   +1.31   00:00      59  f3
2   +0.91   00:00     286  f3 Bg6
3   +1.21   00:00     601  f3 Bg6 f4
4   +1.03   00:00    1417  f3 Nc8 Qb4 Bg6
5   +1.15   00:00    2001  f3 Bg6 f4 Bg7 a5
6   +0.68   00:00    6887  f3 Bg6 f4 Bg7 a5 O-O
7   +1.07   00:00    8924  f3 Bg6 f4 Bg7 a5 O-O a6 gxf4
8   +0.62   00:00   18360  f3 Bg6 f4 Bg7 a5 gxf4 Bxf4 O-O
9   +0.52   00:00   24208  f3 Bg6 f4 Bg7 a5 gxf4 Bxf4 O-O a6 Rab8
10   +0.59   00:00   50519  f3 Bg7 Nb5 O-O Qc7 Qxc7 Nxc7 Ra7 fxe4 Rxc7 Ba5
11   +0.57   00:00   94412  f3 Bg7 fxe4 Bxe5 Nf3 Bxa1 Rxa1 dxe4 Qb2 O-O Ne5 Qd5 Nc4 Rfd8
12   +0.10   00:00  147587  f3 Bg7 fxe4 Bxe5 Nf3 Bxa1 Rxa1 dxe4 Qb2 O-O Ne5 Qd5 Be3 Rfb8 Qc3 Qb3
13   +0.09   00:00  356384  f3 Bg6 Ba6 Bg7 Rfe1 O-O Qb7 Qxb7 Bxb7 Rab8 Bxc6 Rfc8 Bd7 Rxc5 a5
14   -0.17   00:14  614448  f3 Bg6 f4 Bg7 a5 O-O a6 Rfb8 Qa5 gxf4 Bxf4 Be4 a7 Rb2 Bg3
15   +0.26   00:15  933404  f3 Bg6 f4 Bg7 a5 O-O a6 Rfb8 Qa5 Ra7 fxg5 hxg5 Rf6 Bxf6 exf6 e5 fxe7 exd4 Bxg5
16   -0.17   00:17   2169K  f3 Bg6 Qb4 Bg7 f4 Be4 a5 O-O fxg5 hxg5 Bxg5 Bxe5 Qd2 Ng6 a6 Qa7 Ra5 f6 Nxc6
17   +0.34   00:22   5267K  f3 Bg7 fxe4 dxe4 Nxc6 Nxc6 Bb5 Qd4+ Kh1 O-O Qxc6 e3 Bxe3 Qxe3 Rae1 Qc3 Qd6 Qh3 c6 Rad8 Qb4 Rd5 Qb2 Qxg4
18   +0.86   00:25   7075K  f3 Bh7 a5 Bg7 Nxc6 Nxc6 Bb5 Rc8 a6 Bxe5 a7 Ke7 a8=Q Rxa8 Bxc6 Qxc6 Qxc6 Rxa1 Rxa1 Bxa1
19   +0.92   00:33  12346K  f3 Bg6 a5 Bg7 Nxc6 Nxc6 Bb5 Rc8 a6 Bxe5 a7 Ke7 a8=Q Rxa8 Bxc6 Qxc6 Qxc6 Bxa1 Be3 Kf6 f4 gxf4 Qd6 Be5 Rxf4+ Bxf4 Qxf4+ Ke7 Bd4
20   +0.18   00:41  18720K  f3 Bg6 a5 Bg7 Nxc6 Nxc6 Bb5 Rc8 a6 Bxe5 a7 Ke7 a8=Q Rxa8 Rxa8 Rxa8 Bxc6 Rb8 Bxd7 Rxb6 cxb6 Kxd7 f4 gxf4 b7 Kc7 Bxf4 Bxf4 b8=B+ Kxb8
21   +0.11   00:54  27764K  f3 Bg6 a5 Bg7 Nxc6 Nxc6 Bb5 Rc8 a6 Bxe5 a7 Ke7 Ra6 Rb8 axb8=Q Rxb8 Qxc6 Rxb5 Qxd7+ Kxd7 c6+ Kc8 Rd1 Rb2 Ba5 Bxh2+ Kf1 Bc7 Bc3 Rb3
22   +0.31   01:11  36217K  f3 Bg6 Ba6 Bg7 Rfe1 O-O Qb7 Ra7 Qxd7 Rxd7 a5 Ra7 Bf1 Rc8 a6 Bh7 Re3 Ng6 Rae1 Bf8 Bb4 Nf4 Rc1 Bg6 Rb3 Bg7 Re1
23   +0.12   01:46  54440K  f3 Bg6 a5 Bg7 Nxc6 Nxc6 Bb5 Rc8 a6 Bxe5 a7 Ke7 Ra6 Rb8 axb8=Q Rxb8 Qxc6 Rxb5 Qxd7+ Kxd7 c6+ Kc8 Rc1 Bb2 Re1 Bd4+ Kh1 Bd3 Ra4 Bc4 Ra8+ Kc7
24   +0.00   02:52  90469K  f3 Bg6 Rfe1 Bg7 Ba6 Qa7 Bf1 Qd7 Ba6
25   +0.00   03:40 120440K  f3 Bg6 Rfe1 Bg7 Ba6 Qa7 Bf1 Qd7 Ba6
26   +0.00   04:55 163970K  f3 Bg6 Rfe1 Bg7 Ba6 Qa7 Bf1 Qd7 Ba6
27   +0.00   06:01 215051K  f3 Bg6 Rfe1 Bg7 Ba6 Qa7 Bf1 Qd7 Ba6
28   +0.00   07:32 287799K  f3 Bg6 Rfe1 Bg7 Ba6 Qa7 Bf1 Qd7 Ba6
29   +0.87   12:04 518552K  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Rb8 Qd2 Nxe2+ Qxe2 Bxa1 Qf1 Bd4+ Kh1 Ke7 Nxh8 Rxh8 Qa6 Rd8 Qxc6 Rd5 Qb7+ Kf6 c6 e3 c7 e2 Qb4 Be5 Qf8+ Kg6 Qe8+ Kf6
30   +0.82   15:15 665718K  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Rb8 Qd2 Nxe2+ Qxe2 Bxa1 Qf1 Bd4+ Kh1 Kg8 Nxh8 Kxh8 Qc4 Rb1+ Kg2 Rb2+ Kf1 e5 Qe6 Rxh2 Qf6+ Kh7 Qf7+ Kh8 Qe8+ Kg7 Qd7+ Kf8 Qxc6 e3 Qc8+ Kg7 Qd7+ Kf6 Qc6+ Kg7
31   +0.77   17:40 781720K  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Rb8 Qd2 Nxe2+ Qxe2 Bxa1 Qf1 Bd4+ Kh1 Kg8 Nxh8 Kxh8 a5 Kg7 a6 e3 a7 Ra8 Qc4 e5 Qa6 e2 Qb7+ Kf6 Qxc6+ Ke7 Qe4 Rxa7 Qxe2 Rc7 Qe4 Rxc5 Qh7+ Kd8
32   +0.81   25:08   1110M  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Rb8 Qd2 Nxe2+ Qxe2 Bxa1 Qf1 Bd4+ Kh1 Kg8 Nxh8 Kxh8 a5 Kg7 a6 e3 Qd3 e5 a7 Ra8 Qa6 e2 Qb7+ Kf6 Qxc6+ Ke7 Qe4 Rxa7 Qxe2 Rc7 Qe4 Rxc5
33   +1.08   37:12   1595M  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Rb8 Qd2 Nxe2+ Qxe2 Bxa1 Qf1 Bd4+ Kh1 Ke7 Nxh8 Rxh8 Qg2 Bxc5 Qxe4 Kd6 Qd3+ Ke5 Qe2+ Kd6 Qd2+ Ke5 Qc3+ Bd4 Qxc6 Rf8 Kg2 Rf2+ Kg3 Ra2 Qc7+ Kd5 Qa5+ Kd6 Qd8+ Kc5
34   +1.26   49:13   2061M  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Rb8 Qd2 Nxe2+ Qxe2 Bxa1 Qf1 Bd4+ Kh1 Kg7 Nxh8 Kxh8 a5 Kg7 a6 e3 a7 Ra8 Qa6 Kf6 Kg2 e2 Qxe2 Rxa7 Qf3+ Ke7 Qxc6 Be5 Qe4 Ra2+ Kf1 Ra1+ Ke2 Ra2+ Kd1 Bf4 h3 Kf6 h4 Rd2+ Kc1
35   +1.20 1:05:03   2690M  f3 Bh7 Bb5 cxb5 axb5 Qc8 Rxa8 Qxa8 Bc3 Qc8 c6 Bg7 Qc5 Bd3 Ra1 O-O Qxe7 Bxb5 Qc5 Bd3 c7 Re8 Nc6 Bf8 Qb6 Qd7 Ra7 d4 Bxd4 Rc8 Rb7 Be2 Kf2 Bc4 Na7 Bd5 Nxc8
36   +1.43 1:49:15   4701M  f3 Bg6 Bb5 Rc8 Ba6 Rd8 Rfe1 Bg7 a5 O-O Bb7 f5 Bxc6 Nxc6 Qxc6 Qxc6 Nxc6 Rde8 a6 fxg4 fxg4 Rf7 a7 Ra8 Ra6 d4 Bb4 Bf8 Rb6 d3 h3 Kg7 Rf1 Be4 Rxf7+ Kxf7 Rb7+ Kg6 Ne7+ Bxe7 Rxe7
37   +1.35 2:22:02   6207M  f3 Bg6 Bb5 Rc8 Ba6 Rd8 Rfe1 Bg7 a5 O-O Bb7 f5 Bxc6 Nxc6 Qxc6 Qxc6 Nxc6 Rde8 gxf5 Rxf5 Kg2 Bh5 Re3 Rf7 a6 Rc7 a7 Rxc6 a8=Q Rxa8 Rxa8+ Kf7 Ra5 Bf8 Rc3 Bg7 f4 Kg6 Rh3 d4 Kf2 Bf8 fxg5 hxg5 Rg3 Rxc5 Rxg5+ Kh6
38   +1.55 3:07:19   8195M  f3 Bg6 Bb5 Rc8 Ba6 Rd8 Rfe1 Bg7 a5 O-O Bb7 f5 Bxc6 Nxc6 Qxc6 Qxc6 Nxc6 Rde8 gxf5 Rxf5 Kg2 Bh5 Re3 Rf7 a6 Rc7 a7 Rxc6 a8=Q Rxa8 Rxa8+ Kh7 Ra5 Kg6 Bc3 Rc7 Bd4 Kf5 Ra6 Be8 Re1 h5 Kg3 h4+ Kg2 Bb5 Rb6 Be8 Re2 Bh5
39   +1.48 3:57:26  10027M  f3 Bg6 Bb5 Rc8 Ba6 Rd8 Rfe1 Bg7 a5 O-O Bb7 f5 Bxc6 Nxc6 Qxc6 Qxc6 Nxc6 Rde8 gxf5 Rxf5 Kg2 Bh5 Re3 Rf7 a6 Rc7 a7 Rxc6 a8=Q Rxa8 Rxa8+ Kh7 Ra5 Kg6 Bc3 Rc7 Bd4 Kf5 Ra6 Be8 Re1 h5 Kf2 Bc6 Kg3 h4+ Kf2 Bb5 Rb6 Bc6 Bc3
40   +1.46 6:39:16  15789M  f3 Bg6 Bb5 Rc8 Ba6 Rd8 Rfe1 Bg7 a5 O-O Bb7 f5 Bxc6 Nxc6 Qxc6 Qxc6 Nxc6 Rde8 gxf5 Rxf5 Kg2 Rf7 Nd4 Bd3 c6 Bf8 Be3 Rc8 a6 Ra7 Nxe6 Rxa6 Rxa6 Bxa6 c7 Bc4 Rc1 Kf7 Nd8+ Ke8 Bb6 Bb4 Rc2 Kd7 e6+ Ke8 Nc6 Bd6 Na7 Rxc7 Bxc7 Bxc7 Nc6
41   +1.51 8:50:38  20428M  f3 Bg6 Bb5 Rc8 Ba6 Rd8 Rfe1 Bg7 a5 O-O Bb7 f5 Bxc6 Nxc6 Qxc6 Qxc6 Nxc6 Rde8 gxf5 Rxf5 Kg2 Rf7 Nd4 Bd3 c6 Bf8 Be3 Rc8 Rad1 Bc4 Rb1 Ra7 Bd2 Raa8 Rb7 Bc5 Nxe6 Rxc6 Nxc5 Rxc5 Rb6 Bd3 Re3 Bf5 Rxh6
42   +1.60 12:01:37  28929M  f3 Bg7 fxe4 dxe4 Qb2 Bxe5 Bc3 Nd5 Nb5 Nxc3 Nd6+ Kf8 Rxf7+ Qxf7 Nxf7 Kxf7 Qb7+ Kg6 Re1 Rac8 Qd7 Rhe8 Bd1 Rcd8 Qxc6 Re7 Bc2 Kf6 Bxe4 Rc7 Qa6 Nxe4 Rxe4 Rxc5 Re2 Rcd5 a5 Rd2 h3 R8d6 Qa8 Rxe2 Qf3+ Bf4 Qxe2 Rd2 Qc4 Ke7 Qb4+ Kf7 a6 Ra2 Qb7+ Kf6
Parent - - By darmar (**) Date 2016-08-28 01:25
Bb5!!
Parent - By Lazy Frank (***) [gb] Date 2016-08-28 01:31
Hmmm ... and f3 not a winning? :razz:
You asked to found winning move (IIRC).
Parent - - By mobmat [us] Date 2018-01-17 18:29
Sometimes we just need more modern engines...

Houdini 6 finds Bb5 after liking f3 for awhile

FEN:
r3kb1r/3qnp2/1Qp1p2p/2PpP1p1/P2Nb1P1/8/3BBP1P/R4RK1 w kq - 0 22


+ Houdini 6:
11/24  00:00   231k  1,572k  -0.09  22.Nb5 Nc8 23.Qc7 Ke7 24.Qxd7+ Kxd7 25.Nd6 Nxd6 26.exd6 Bg7 27.Ra2
12/28  00:00   833k  1,526k  -0.63  22.f3 Bh7 23.f4 Bg7 24.fxg5 Be4 25.gxh6 Bxe5 26.Qb4 Qc7 27.Qc3 Bxh2+ 28.Kf2
12/28  00:00   839k  1,526k  -0.32  22.Nb5 Nc8 23.Qc7 Ke7 24.Qxd7+ Kxd7 25.Nd6 Nxd6 26.cxd6 f6 27.f3 Bg6 28.exf6
13/30  00:01   1,665k  1,538k  -0.55  22.f3 Bh7 23.f4 Bg7 24.fxg5 Bxe5 25.Nf3 Bxa1 26.Rxa1 hxg5 27.Bxg5 0-0 28.Ne5 Qa7 29.Qxa7 Rxa7 30.Rf1
14/31  00:01   2,383k  1,556k  -0.74  22.Nb5 Nc8 23.Qc7 Ke7 24.Qxd7+ Kxd7 25.Nc3 Bg6 26.Be3 Ra5 27.Rfc1 Bg7 28.Bd4 h5 29.Nd1 hxg4 30.Ne3 Be4 31.Nxg4
15/37  00:02   3,792k  1,561k  -0.63  22.f3 Bh7 23.f4 Bg7 24.fxg5 Bxe5 25.Nf3 Bxa1 26.Rxa1 hxg5 27.Ne5 Qa7 28.Bxg5 0-0 29.Bh4 Ng6 30.Nxg6
16/37  00:03   6,209k  1,555k  -0.64  22.Nb5 Nc8 23.Qc7 Ke7 24.Qxd7+ Kxd7 25.Nc3 Bg6 26.Be3 Ra5 27.Rac1 Ne7 28.Bd4 h5 29.gxh5 Bxh5 30.Rb1 Bxe2
17/39  00:07   12,265k  1,554k  -0.89  22.Nb5 Nc8 23.Qc7 Ke7 24.Qxd7+ Kxd7 25.Nd4 Bxc5 26.Nb3 Ba7 27.Be3 Ne7 28.Bxa7 Rxa7 29.a5 Ng6 30.f3 Nf4 31.fxe4 Nxe2+ 32.Kf2 Nf4 33.Nc5+ Ke7 34.exd5
17/39  00:07   12,394k  1,553k  -0.79  22.f3 Bh7 23.Qb4 Bg7 24.f4 Be4 25.Rf2 gxf4 26.Bxf4 Ng6 27.Nxc6 0-0 28.Qb6 Rfc8 29.Bb5 d4 30.Nb8 Qe7 31.Nd7 Qh4 32.Bg3 Qxg4
18/40  00:11   16,722k  1,515k   0.00  22.f3 Bh7 23.Bb5 cxb5 24.axb5 Qd8 25.Nc6 Qc8 26.Na7 Qd8 27.Nc6
19/41  00:11   17,831k  1,513k   0.00  22.f3 Bh7 23.Bb5 cxb5 24.axb5 Qd8 25.Nc6 Qc8 26.Na7 Qd8 27.Nc6
20/42  00:13   20,558k  1,502k   0.00  22.f3 Bh7 23.Bb5 cxb5 24.axb5 Qd8 25.Nc6 Qc8 26.Na7 Qd8 27.Nc6
21/42  00:17   26,184k  1,505k   0.00  22.f3 Bh7 23.a5 Bg7 24.Nxc6 0-0 25.Nxe7+ Qxe7 26.Qd6 Qb7 27.Qb6 Qc8 28.f4 Rb8 29.Qd6 Qb7 30.Qb6 Qc8
22/46  00:30   45,238k  1,483k   0.00  22.f3 Bh7 23.Bb5 cxb5 24.axb5 Qc8 25.c6 Bg7 26.Qc5 Bd3 27.Rxa8 Qxa8 28.Re1 Bxb5 29.Qxb5 0-0 30.Bb4 Bxe5 31.Rxe5 Qa1+ 32.Kg2 Qxd4 33.Bxe7 Qxe5 34.Bxf8 Kxf8 35.Qc5+ Kg8 36.Qa7
23/48  00:34   50,791k  1,484k   0.00  22.f3 Bh7 23.Bb5 cxb5 24.axb5 Qc8 25.c6 Bg7 26.Qc5 Bd3 27.Rxa8 Qxa8 28.Re1 Bxb5 29.Qxb5 0-0 30.Bb4 Bxe5 31.Rxe5 Qa1+ 32.Kg2 Qxd4 33.Bxe7 Qxe5 34.Bxf8 Kxf8 35.Qc5+ Kg8 36.c7 Qe2+
24/56  01:07   101,066k  1,496k  +1.09  22.f3 Bg7 23.fxe4 dxe4 24.Be3 Nd5 25.Qb3 0-0 26.Bf2 Bxe5 27.Rfd1 Qc7 28.Kh1 Rab8 29.Qh3 Bg7 30.Qg2 Nc3 31.Bg3 Qb7 32.Bxb8 Qxb8 33.Nxc6 Qc7 34.Rd6 Nxe2 35.Qxe2
25/58  01:57   174,149k  1,483k  +0.96  22.f3 Bg7 23.fxe4 dxe4 24.Be3 Nd5 25.Qb3 0-0 26.Bc4 Rab8 27.Qa3 Bxe5 28.Rad1 Rb1 29.Bxd5 Rxd1 30.Rxd1 cxd5 31.c6 Qc7 32.Kh1 Rc8 33.Qb2 Bxd4 34.Qxd4 Qxc6 35.Rc1 Qa6 36.Rxc8+ Qxc8 37.Qf6 Qc2 38.a5 Qe2
26/60  02:24   214,418k  1,481k  +1.12  22.f3 Bg7 23.fxe4 dxe4 24.Be3 Nd5 25.Qb3 0-0 26.Bc4 Rfb8 27.Qa3 Bxe5 28.Bxd5 Bxd4 29.Bxd4 Qxd5 30.Rad1 Rb3 31.Qa1 Rd3 32.Be3 e5 33.Kh1 Rxd1 34.Rxd1 Qb3 35.Re1 Qb4 36.Rb1 Rxa4 37.Rxb4 Rxa1+ 38.Kg2
27/65  04:18   380,634k  1,471k  +1.13  22.f3 Bg7 23.fxe4 dxe4 24.Be3 Nd5 25.Qb3 0-0 26.Bc4 Rfb8 27.Qa3 Bxe5 28.Bxd5 cxd5 29.Ra2 Rc8 30.c6 Qd8 31.Raf2 Bf4 32.Kh1 Qf6 33.a5 e5 34.Nf5 Rxc6 35.Ne7+ Kg7 36.Nxd5 Qd6 37.Qxd6 Rxd6 38.Ne7 Bxe3 39.Nf5+ Kg8 40.Nxd6 Bxf2 41.Rxf2
28/65  06:26   563,854k  1,457k  +1.11  22.f3 Bg7 23.fxe4 dxe4 24.Be3 Nd5 25.Qb3 0-0 26.Bc4 Rfb8 27.Qa3 Bxe5 28.Bxd5 cxd5 29.Ra2 Rc8 30.c6 Qd8 31.Raf2 Bf4 32.Kg2 Qf6 33.a5 e5 34.Nf5 Rxc6 35.Ne7+ Kh7 36.Nxc6 Qxc6 37.Qe7 Qg6 38.a6 Rxa6
29/65  08:59   794,523k  1,471k  +1.11  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qxb8+ Bxb8 31.Nxh8 Nxe2+ 32.Kf2 Nf4 33.a5 Nd3+ 34.Ke2 Nxc5 35.a6 Kg7 36.a7 Bxa7 37.Rxa7+ Kxh8 38.Ke3 Kg8 39.Rc7 Nd3 40.Kxe4 Nf2+ 41.Kf3 Nd3 42.Re7 c5 43.Ke3 Nf4 44.Ke4 c4 45.Rc7 Nd5 46.Rxc4
30/70  14:39   1,287,139k  1,463k  +1.03  22.f3 Bg7 23.fxe4 dxe4 24.Be3 Nd5 25.Qb3 0-0 26.Bc4 Rab8 27.Qa3 Bxe5 28.Rad1 Rfd8 29.Bxd5 Qxd5 30.Qc3 Qa2 31.Rd2 Qxa4 32.Ra1 Qb4 33.Qxb4 Rxb4 34.Nxc6 Rxd2 35.Bxd2 Bxh2+ 36.Kxh2 Rb2 37.Kg3 Rxd2 38.Ra7 Rc2 39.Ne7+ Kf8 40.c6 f5 41.gxf5 exf5 42.c7 Rc3+ 43.Kf2
30/70  18:10   1,594,914k  1,462k  +1.37  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 Nxf4 27.Bxf4 gxf4 28.Rxf4 Bd3 29.Re1 Bxb5 30.Qxb5 Rd8 31.Nb6 Qc7 32.Nxa8 Rxa8 33.Ref1 Rf8 34.Qb6 Qxe5 35.c6 Qc3 36.Qf2 Ra8 37.c7 Rc8 38.Kg2 Qxc7 39.Rxf7 Qc4 40.Rxg7+ Kxg7 41.Qf7+ Kh8 42.Qxe6
31/70  24:26   2,144,885k  1,462k  +1.40  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 Nxf4 27.Bxf4 gxf4 28.Rxf4 Qd8 29.Qxd8 Raxd8 30.Nf6+ Bxf6 31.exf6 e5 32.Rf2 Rc8 33.c6 Rc7 34.a5 Rb8 35.a6 Rxb5 36.a7 Rxa7 37.Rxa7 Rc5 38.Ra8+ Kh7 39.Rf8 Rxc6 40.Rxf7+ Kg8 41.Rb7 Rc8 42.Rg7+ Kf8 43.Ra2 d4 44.Re2 Bd3 45.Rxe5
32/72  31:55   2,817,887k  1,470k  +1.30  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Qd8 28.Qxd8 Raxd8 29.Nf6+ Bxf6 30.exf6 Nxf4 31.Rxf4 e5 32.Rf2 Rc8 33.c6 Rc7 34.a5 Kh7 35.h3 Rg8 36.Kh2 Rb8 37.a6 Kg6 38.Kg3 h5 39.gxh5+ Kxh5 40.Be2+ Kg6 41.Rc1 Rbc8 42.Bb5 Rb8 43.Rc5 Bf5 44.Rf1 Kxf6 45.Rxd5
33/72  38:11   3,366,321k  1,468k  +1.36  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Qd8 28.Qxd8 Raxd8 29.Nf6+ Bxf6 30.exf6 Nxf4 31.Rxf4 e5 32.Rf2 Rc8 33.Rc1 Rfd8 34.a5 Kh7 35.c6 Rc7 36.h3 Rb8 37.Rc5 h5 38.gxh5 Kh6 39.Kh2 Kxh5 40.a6 Rg8 41.Rc3 Kh4
Parent - By Vinvin (***) [be] Date 2018-01-24 22:08

> Houdini 6 finds Bb5 after liking f3 for awhile


It's not easy for SF-McBrain to chose between f3 and Bb5 :

SF-McBrain-v40_x64_modern:
...
---------------------------------------------------------------------------
24/38  00:01   9 597k  8 961k  +1,39  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qd2 Nxe2+ 31.Qxe2 Bxa1 32.Qf1 Bd4+ 33.Kh1 Ke7 34.Nxh8 Rxh8 35.Qa6 e3 36.Qxc6 Kf6 37.Qd6 Be5 38.Qd1 Rb8 39.Qf3+ Bf4
24/43  00:01   9 597k  8 961k  +1,73  22.Bb5 Rc8 23.Ba6 Rd8 24.Nb5 Nc8 25.Qa5 Bg7 26.Bxc8 Rxc8 27.Nd6+ Kf8 28.Nxc8 Qxc8 29.f3 Bg6 30.Qc3 Qb8 31.Rae1 Ke7 32.a5 Rd8 33.a6 Qa7 34.Ra1 d4 35.Qc4 Bxe5 36.Rfe1 Bg7 37.f4 gxf4
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25/59  00:02   24 239k  9 178k  +1,56  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qd2 Nxe2+ 31.Qxe2 Bxa1 32.Qf1 Bd4+ 33.Kh1 Ke7 34.Nxh8 Rxh8 35.Qc4 Rd8 36.a5 Rd5 37.a6 Bxc5 38.Qxe4 Rd1+ 39.Kg2 Kd6 40.Qh7 Rd2+ 41.Kg3 Ra2 42.Qxh6 Ra3+ 43.Kg2 Ra2+ 44.Kf1 Ra1+ 45.Ke2 Ra2+ 46.Kd3 Ra3+ 47.Kc4 Ra4+ 48.Kb3 Ra3+ 49.Kb2 Rxa6 50.Qxg5 Bd4+ 51.Kb3
25/45  00:02   24 239k  9 178k  +1,87  22.Bb5 Rc8 23.Ba6 Rd8 24.Nb5 Nc8 25.Qa5 Bg6 26.Qc3 Bg7 27.Bxc8 Rxc8 28.Nd6+ Ke7 29.f4 gxf4 30.Rxf4 Kf8 31.Nxc8 Qxc8 32.Qg3 Ke8 33.Bc3 h5 34.g5 Qc7 35.a5 h4 36.Rxh4 Rxh4 37.Qxh4 Bxe5
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26/45  00:07   72 998k  9 202k  +1,76  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qd2 Nxe2+ 31.Qxe2 Bxa1 32.Qf1 Bd4+ 33.Kh1 Kg7 34.Nxh8 Rxh8 35.a5 e3 36.a6 Rb8 37.a7 Ra8 38.Qa6 Kf6 39.Kg2 e2 40.Qxe2 Rxa7 41.Qf3+ Ke7 42.Qxc6
26/47  00:07   72 998k  9 202k  +1,87  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Nxf4 28.Rxf4 Bd3 29.Re1 Rd8 30.c6 Bxb5 31.axb5 Rxd7 32.cxd7 Qxd7 33.Rf2 Qe8 34.Rc1 Bxe5 35.Qe3 Bg7 36.b6 Rb8 37.Rc7 d4 38.Qb3 Be5 39.Rcxf7 Qxf7 40.Rxf7 Kxf7
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27/51  00:09   89 670k  9 266k  +1,73  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 Nxf4 27.Bxf4 gxf4 28.Rxf4 Bd3 29.Re1 Rd8 30.c6 Bxb5 31.axb5 Rxd7 32.cxd7 Qxd7 33.Qf2 Qxb5 34.Rxf7 Qb4 35.Rf4 Qc3 36.Qe3 Qc7 37.Rf2 Rc8 38.Qd3 Qc3 39.Qxc3 Rxc3 40.Kg2 d4 41.Rf4
27/52  00:09   89 670k  9 266k  +1,78  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Kxf7 30.Qb7+ Kg6 31.Bc4 Ne2+ 32.Bxe2 Bxa1 33.Qxc6 Kf6 34.Bc4 Rae8 35.Qxe4 Be5 36.Qf3+ Kg7 37.Bd3 Rhg8 38.a5 Rd8 39.a6 Bd4+ 40.Kh1 Bxc5 41.Qe4 Kf6 42.Bc4 Rge8 43.Bxe6 Bb6 44.Qf5+ Ke7 45.Qg6 Rd2 46.Qxh6 Rd1+ 47.Kg2
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28/67  00:26   253 965k  9 415k  +1,80  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qd2 Nxe2+ 31.Qxe2 Bxa1 32.Qf1 Bd4+ 33.Kh1 Ke7 34.Nxh8 Rxh8 35.Qc4 e5 36.Qa6 e3 37.Qb7+ Kf8 38.Qxc6 Ke7 39.Qb7+ Ke6 40.c6 e2 41.Qd7+ Kf6 42.Qf5+ Ke7 43.Qe4 Rc8 44.Qxe2 Rxc6 45.Qe4 Rf6 46.Kg2 Kd6 47.Kg3 Bc5 48.Qd3+ Kc7
28/60  00:26   253 965k  9 415k  +1,88  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qa7 25.Nd7 Rfc8 26.Nf6+ Bxf6 27.exf6 Ng6 28.f3 Bc2 29.Be3 Ne5 30.Bd4 Nc4 31.Qxa7 Rxa7 32.c6 Rac7 33.Bc3 e5 34.Rfc1 Bd3 35.a5 d4 36.Bxc4 Bxc4 37.Bxd4 Rxc6 38.Bxe5 Kh7 39.Kg2
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29/57  00:30   284 585k  9 436k  +1,50  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qxb8+ Bxb8 31.Nxh8 Nxe2+ 32.Kf2 Nf4 33.a5 Ba7 34.Ke3 Kg7 35.Kxe4 Kxh8 36.Rb1 Bxc5 37.Rc1 Bf2 38.a6 Kg7 39.Rc2 Bg1 40.Rxc6 Kf6 41.Rc7 Nd5 42.Rh7 Ne7 43.h3 Ba7 44.Rxh6+ Ng6 45.Rh7 Bb8
29/47  00:30   284 585k  9 436k  +1,71  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Nxf4 28.Rxf4 Rb8 29.Qd6 Rd8 30.Qxb8 Qxb8 31.Nxb8 Rxb8 32.Rf6 Rc8 33.c6 Kf8 34.Raf1 Bxf6 35.exf6 Rc7 36.Kf2 Ke8 37.Ke3 Kd8 38.Kd4 Ra7 39.h4 Kc7 40.Ke5 Bc2 41.Rc1
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30/62  00:53   505 940k  9 499k  +1,72  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Kxf7 30.Qb7+ Kg6 31.Bc4 Ne2+ 32.Bxe2 Bxa1 33.Qxc6 Kf6 34.Bc4 Rae8 35.Qxe4 Be5 36.Qf3+ Bf4 37.h4 Re7 38.Qe4 Rc8 39.c6 Ra8 40.Kg2 Rxa4 41.h5 Rb4 42.Qc2 Rb6 43.Qg6+ Ke5 44.Qxh6 Rxc6 45.Qh8+ Kd6 46.Qd8+ Rd7
30/59  00:53   505 940k  9 499k  +1,74  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qa7 25.Nd7 Rfc8 26.Nf6+ Kh8 27.f3 Bh7 28.f4 Ng6 29.Qxa7 Rxa7 30.c6 Bxf6 31.exf6 Nxf4 32.Be3 Raa8 33.Bxf4 gxf4 34.Rxf4 e5 35.Rff1 Kg8 36.Kf2 Be4 37.h4 Kf8 38.Rfc1 Ra5 39.g5 hxg5 40.hxg5 Rc7 41.Ra3 d4 42.Rh3
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31/57  01:08   652 990k  9 470k  +1,48  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Qd8 28.Qxd8 Raxd8 29.Rac1 Rxd7 30.Bxd7 Nxf4 31.Rxf4 Bxe5 32.Rf2 Bc7 33.Rcf1 Bd3 34.Rd1 Bg6 35.Bb5 Ra8 36.Kf1 Kf8 37.h3 Ke7 38.Re2 Kf6 39.Kf2 Be4 40.Ra2 Ke7 41.Ke3 f5 42.gxf5 Bxf5
31/59  01:08   652 990k  9 470k  +1,71  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qxb8+ Bxb8 31.Nxh8 Nxe2+ 32.Kf2 Nf4 33.Rb1 Ba7 34.Ke3 Bxc5+ 35.Kxe4 Kg7 36.Rb8 Bd6 37.Rb7+ Kxh8 38.a5 Kg8 39.a6 Bc5 40.Rc7 Kf8 41.Rxc6 Bg1 42.Rc1 Bf2 43.Rc8+ Kf7 44.Rc7+ Kg6 45.Ke5 Nd3+ 46.Kxe6
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32/44  01:45   964 064k  9 131k  +1,50  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Qd8 28.Qxd8 Raxd8 29.Rac1 Nxf4 30.Rxf4 Rxd7 31.Bxd7 Bxe5 32.Rf2 Ra8 33.c6 Bc7 34.Rb2 d4 35.Rc4 Kf8 36.Rxd4 Bf3 37.Rb5 Ke7 38.a5 Rxa5 39.Rxa5 Bxa5 40.Ra4 Bb6+ 41.Kf1 Bc7 42.Kf2 Bd5 43.Ra8 Bxh2
32/69  01:45   964 064k  9 131k  +1,67  22.f3 Bg6 23.Bb5 Rc8 24.Ba6 Rd8 25.a5 Bg7 26.Rfe1 0-0 27.Bb7 f6 28.Bxc6 Nxc6 29.Qxc6 fxe5 30.Qxd7 Rxd7 31.Nxe6 Rc8 32.Nxg7 Kxg7 33.Rxe5 Rxc5 34.a6 Rc8 35.f4 gxf4 36.Bxf4 Rf8 37.Bd2 Ra8 38.Re6 Kf7 39.Rc6 Bd3 40.Ra3 Be2 41.Kf2 Bxg4 42.Bxh6
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33/63  02:47   1 477 150k  8 833k  +1,50  22.Bb5 Bg7 23.Nxc6 0-0 24.Nb8 Qc8 25.Nd7 Ng6 26.f4 gxf4 27.Bxf4 Qd8 28.Qxd8 Raxd8 29.Nf6+ Bxf6 30.exf6 Nxf4 31.Rxf4 e5 32.Rf2 Rc8 33.Rc1 Rfd8 34.h4 d4 35.Re1 d3 36.Rxe4 d2 37.Be2 d1Q+ 38.Bxd1 Rxd1+ 39.Rf1 Rd5 40.Rc1 Rdxc5 41.Rxc5 Rxc5 42.Kf2 h5 43.g5 Kh7 44.Rb4 Kg6 45.Ke3 Kf5 46.Kd3 Rd5+ 47.Kc3 Ra5
33/63  02:47   1 477 150k  8 833k  +1,75  22.f3 Bg7 23.fxe4 dxe4 24.Qb2 Bxe5 25.Bc3 Nd5 26.Nb5 Nxc3 27.Nd6+ Kf8 28.Rxf7+ Qxf7 29.Nxf7 Rb8 30.Qxb8+ Bxb8 31.Nxh8 Nxe2+ 32.Kf2 Nf4 33.Rb1 Ba7 34.Ke3 Bxc5+ 35.Kxe4 Kg7 36.Rb8 h5 37.gxh5 Nxh5 38.Rc8 Bb4 39.Ke5 Nf4 40.Ra8 Nd5 41.a5 Bd2 42.Kd6 Bf4+ 43.Kxc6 Bxh2 44.Re8 Nb4+ 45.Kc5 Nd3+ 46.Kc4 Nf4
- By Lazy Frank (***) [gb] Date 2016-08-24 15:17
Latest profiled SF: move f3, 8 threads, 35 seconds to reach over +1.0.
Up Topic The Rybka Lounge / Test Positions / Strong position for engines

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