Robbo had taken a one point lead, but Rybka struck back with two wins, deciding the last game with the following shot.
It is a classic theme, and probably not too hard for most engines. When testing with other engines, I've been consistently impressed at how strong a tactician Stockfish is.
[d]3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - - 0 44
44...e4!! 45.fxe4 Ne5!
Test position: classic square clearance
Moderator: Ras
-
Albert Silver
- Posts: 3026
- Joined: Wed Mar 08, 2006 9:57 pm
- Location: Rio de Janeiro, Brazil
Test position: classic square clearance
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."
-
yanquis1972
- Posts: 1766
- Joined: Wed Jun 03, 2009 12:14 am
Re: Test position: classic square clearance
Ivanhoe eventually finds it, but with a perhaps even more ruthless improvement- e4 fe f4! gx Qh4
3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - -
Engine: IvanHoe 9.70b x64 4T 128s (1024 MB)
by Yakov Petrovich Golyadkin, Igor Igorovi
15.01 0:01 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (9.806.525) 4947
15.40 0:02 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (9.968.408) 4915
16.01 0:02 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (10.949.651) 4941
16.40 0:02 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (11.998.912) 4929
17.01 0:03 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (15.759.933) 5101
17.40 0:03 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (17.116.182) 5078
18.01 0:04 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (25.661.763) 5322
18.40 0:08 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (49.575.915) 5546
19.01 0:11 -0.82++ 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (61.753.163) 5575
19.01 0:14 -0.90++ 1...Bxf2 2.Kxf2 d3 3.Bb1 f4 4.Qd2 Qg5
5.Qxd3 fxg3+ 6.Kg1 Nd4 7.Bxd4 exd4
8.Qxd4 Qc1+ 9.Kg2 Qxb1 10.Qd8+ Kf7
11.Qc7+ Kf6 12.Qd8+ Kg7 13.Qe7+ Bf7
14.Qe5+ Kf8 (79.778.968) 5663
19.01 0:17 -0.77 1...Bxf2 2.Qxf2 Qa5 3.b4 Nxb4 4.Bxb4 Qxb4
5.c5 Bf7 6.Bxf7+ Kxf7 7.Qa2+ Ke7
8.Qa7+ Kd8 9.Qxh7 Qb2+ 10.Kf1 Qc1+
11.Kg2 Qd2+ 12.Kg1 Qe3+ 13.Kg2 Qe2+
14.Kg1 Qxf3 (100.136.324) 5695
19.40 0:21 -0.77 1...Bxf2 2.Qxf2 Qa5 3.b4 Nxb4 4.Bxb4 Qxb4
5.c5 Bf7 6.Bxf7+ Kxf7 7.Qa2+ Ke7
8.Qa7+ Kd8 9.Qxh7 Qb2+ 10.Kf1 Qc1+
11.Kg2 Qd2+ 12.Kg1 Qe3+ 13.Kg2 Qe2+
14.Kg1 Qxf3 (122.006.453) 5716
20.01 0:22 -0.77 1...Bxf2 2.Qxf2 Qa5 3.b4 Nxb4 4.Bxb4 Qxb4
5.c5 Bf7 6.Bxf7+ Kxf7 7.Qa2+ Ke7
8.Qa7+ Kd8 9.Qxh7 Qb2+ 10.Kf1 Qc1+
11.Kg2 Qd2+ 12.Kg1 Qe3+ 13.Kg2 Qe2+
14.Kg1 Qxf3 (127.218.711) 5718
20.34 0:29 -0.85++ 1...e4 (167.919.591) 5740
20.01 0:30 -0.93++ 1...e4 (178.204.200) 5751
20.01 0:32 -1.05++ 1...e4 (189.860.581) 5762
20.01 0:35 -1.23++ 1...e4 (205.865.896) 5782
20.01 0:39 -1.50++ 1...e4 (231.945.252) 5805
20.01 0:50 -1.90++ 1...e4 (298.283.986) 5863
20.01 1:11 -2.50++ 1...e4 (428.241.676) 5966
20.01 1:27 -2.68 1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4
5.Kh1 Qg3 6.Qg2 Qe3 7.e5 Qe1+ 8.Qg1 Qe2
9.Bb1 Be3 10.Bxg6 Qf3+ 11.Qg2 Qxg2+
12.Kxg2 hxg6 13.Kg3 Nxe5 14.Nd1 Nd3 (527.876.821) 6003
20.40 1:27 -2.68 1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4
5.Kh1 Qg3 6.Qg2 Qe3 7.e5 Qe1+ 8.Qg1 Qe2
9.Bb1 Be3 10.Bxg6 Qf3+ 11.Qg2 Qxg2+
12.Kxg2 hxg6 13.Kg3 Nxe5 14.Nd1 Nd3 (527.942.726) 6002
20.01 1:38 -2.68 1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4
5.Kh1 Qg3 6.Qg2 Qe3 7.e5 Qe1+ 8.Qg1 Qe2
9.Bb1 Be3 10.Bxg6 Qf3+ 11.Qg2 Qxg2+
12.Kxg2 hxg6 13.Kg3 Nxe5 14.Nd1 Nd3 (590.851.782) 6024
best move: e5-e4 time: 1:38.265 min n/s: 6.024.000 CPU 0.1% n/s(1CPU): 1729.032.704 nodes: 590.851.782
3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - -
Engine: IvanHoe 9.70b x64 4T 128s (1024 MB)
by Yakov Petrovich Golyadkin, Igor Igorovi
15.01 0:01 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (9.806.525) 4947
15.40 0:02 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (9.968.408) 4915
16.01 0:02 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (10.949.651) 4941
16.40 0:02 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (11.998.912) 4929
17.01 0:03 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (15.759.933) 5101
17.40 0:03 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (17.116.182) 5078
18.01 0:04 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (25.661.763) 5322
18.40 0:08 -0.74 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (49.575.915) 5546
19.01 0:11 -0.82++ 1...Bxf2 2.Kxf2 d3 3.b4 d2 4.Qd1 e4
5.f4 Qd3 6.Bb1 Qc3 7.Be3 Qxb4 8.Bxd2 Qxc4
9.Be3 Qb4 10.g4 Kg7 11.Qc1 Bc4
12.Ba2 Bxa2 13.Qxc6 Bf7 14.Qb6 Qa3 (61.753.163) 5575
19.01 0:14 -0.90++ 1...Bxf2 2.Kxf2 d3 3.Bb1 f4 4.Qd2 Qg5
5.Qxd3 fxg3+ 6.Kg1 Nd4 7.Bxd4 exd4
8.Qxd4 Qc1+ 9.Kg2 Qxb1 10.Qd8+ Kf7
11.Qc7+ Kf6 12.Qd8+ Kg7 13.Qe7+ Bf7
14.Qe5+ Kf8 (79.778.968) 5663
19.01 0:17 -0.77 1...Bxf2 2.Qxf2 Qa5 3.b4 Nxb4 4.Bxb4 Qxb4
5.c5 Bf7 6.Bxf7+ Kxf7 7.Qa2+ Ke7
8.Qa7+ Kd8 9.Qxh7 Qb2+ 10.Kf1 Qc1+
11.Kg2 Qd2+ 12.Kg1 Qe3+ 13.Kg2 Qe2+
14.Kg1 Qxf3 (100.136.324) 5695
19.40 0:21 -0.77 1...Bxf2 2.Qxf2 Qa5 3.b4 Nxb4 4.Bxb4 Qxb4
5.c5 Bf7 6.Bxf7+ Kxf7 7.Qa2+ Ke7
8.Qa7+ Kd8 9.Qxh7 Qb2+ 10.Kf1 Qc1+
11.Kg2 Qd2+ 12.Kg1 Qe3+ 13.Kg2 Qe2+
14.Kg1 Qxf3 (122.006.453) 5716
20.01 0:22 -0.77 1...Bxf2 2.Qxf2 Qa5 3.b4 Nxb4 4.Bxb4 Qxb4
5.c5 Bf7 6.Bxf7+ Kxf7 7.Qa2+ Ke7
8.Qa7+ Kd8 9.Qxh7 Qb2+ 10.Kf1 Qc1+
11.Kg2 Qd2+ 12.Kg1 Qe3+ 13.Kg2 Qe2+
14.Kg1 Qxf3 (127.218.711) 5718
20.34 0:29 -0.85++ 1...e4 (167.919.591) 5740
20.01 0:30 -0.93++ 1...e4 (178.204.200) 5751
20.01 0:32 -1.05++ 1...e4 (189.860.581) 5762
20.01 0:35 -1.23++ 1...e4 (205.865.896) 5782
20.01 0:39 -1.50++ 1...e4 (231.945.252) 5805
20.01 0:50 -1.90++ 1...e4 (298.283.986) 5863
20.01 1:11 -2.50++ 1...e4 (428.241.676) 5966
20.01 1:27 -2.68 1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4
5.Kh1 Qg3 6.Qg2 Qe3 7.e5 Qe1+ 8.Qg1 Qe2
9.Bb1 Be3 10.Bxg6 Qf3+ 11.Qg2 Qxg2+
12.Kxg2 hxg6 13.Kg3 Nxe5 14.Nd1 Nd3 (527.876.821) 6003
20.40 1:27 -2.68 1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4
5.Kh1 Qg3 6.Qg2 Qe3 7.e5 Qe1+ 8.Qg1 Qe2
9.Bb1 Be3 10.Bxg6 Qf3+ 11.Qg2 Qxg2+
12.Kxg2 hxg6 13.Kg3 Nxe5 14.Nd1 Nd3 (527.942.726) 6002
20.01 1:38 -2.68 1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4
5.Kh1 Qg3 6.Qg2 Qe3 7.e5 Qe1+ 8.Qg1 Qe2
9.Bb1 Be3 10.Bxg6 Qf3+ 11.Qg2 Qxg2+
12.Kxg2 hxg6 13.Kg3 Nxe5 14.Nd1 Nd3 (590.851.782) 6024
best move: e5-e4 time: 1:38.265 min n/s: 6.024.000 CPU 0.1% n/s(1CPU): 1729.032.704 nodes: 590.851.782
-
kgburcham
- Posts: 2016
- Joined: Sun Feb 17, 2008 4:19 pm
Re: Test position: classic square clearance
[d] 3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - - 0 1
Rybka 3
1...e4
-/+ (-0.96 !) Depth: 15 00:00:35 9694kN
1...e4
-/+ (-1.16 !) Depth: 15 00:00:43 12258kN
1...e4
-+ (-1.56 !) Depth: 15 00:01:20 24451kN
1...e4 2.fxe4 Ne5 3.b4 Qa8 4.Bb1 Qa3 5.Bd6 Nxc4[] 6.Bc5 Qb2 7.Bd3 Ne5 8.Be2[] fxe4 9.Nd1 Qc1 10.Qf1 Nd7 11.Ba7 Qc7 12.Nxe3 Qxa7 13.Bc4 Bxc4 14.Qxc4+ Kg7 15.Ng4 h5 16.Nf2 Nf6
-+ (-1.55) Depth: 15 00:01:36 29825kN
1...e4
-+ (-1.75 !) Depth: 16 00:02:03 38495kN
1...e4
-+ (-1.95 !) Depth: 16 00:02:25 45847kN
1...e4 2.fxe4 Ne5[] 3.Bb1 f4[] 4.gxf4 Bxf4[] 5.Qe2 Qg5+ 6.Kf1 Qg3 7.Bxd4 Nf3[] 8.Qd3 Qg1+ 9.Ke2 Nd2[] 10.Be3[] Qf1+[] 11.Kxd2 Qxf2+[] 12.Kc3 Bxe3[] 13.b4 Bg5 14.Kb3 Bf6 15.Qc2 Qd4 16.h4 Bxh4
-+ (-2.20) Depth: 16 00:03:10 60776kN
1...e4 2.fxe4 Ne5[] 3.Bb1 f4[] 4.gxf4 Bxf4[] 5.Qe2 Qg5+ 6.Kf1 Qg3 7.Bxd4 Nf3[] 8.Qd3 Qg1+ 9.Ke2 Nd2[] 10.Be3[] Qf1+[] 11.Kxd2 Qxf2+[] 12.Kc3 Bxe3[] 13.b4 Bg5 14.Kb3 Bf6 15.Qc2 Qd4 16.h4 Bxh4
-+ (-2.20) Depth: 17 00:03:29 67050kN
1...e4 2.fxe4 Ne5[] 3.Bb1 f4[] 4.gxf4 Bxf4[] 5.Qe2 Qg5+ 6.Kf1[] Qg3 7.Bxd4 Nf3[] 8.Qd3 Qg1+ 9.Ke2 Nd2[] 10.Be3[] Qf1+[] 11.Kxd2 Qxf2+[] 12.Kc3 Bxe3[] 13.b4 Bg5 14.Kb3 Bf6 15.Qc2 Qd4 16.h4 Bxh4
-+ (-2.20) Depth: 18 00:04:12 81025kN
FireBird 1.0 beta x64
1...e4
-/+ (-0.91) Depth: 22 00:01:23 623mN
1...e4
-/+ (-1.03) Depth: 22 00:01:26 648mN
1...e4
-/+ (-1.21) Depth: 22 00:01:34 709mN
1...e4
-+ (-1.48) Depth: 22 00:01:45 789mN
1...e4
-+ (-1.88) Depth: 22 00:02:02 918mN
1...e4
-+ (-2.48) Depth: 22 00:02:39 1206mN
1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4 5.Kh1 Qg3 6.Qg2 Qc3 7.Qf1 Qf3+ 8.Qg2 Qe2 9.Bb1 Be3 10.Bd3 Qxf2 11.Qxf2 Bxf2 12.Kg2 Be1 13.Be2 Kf7 14.Bd6 Kf6 15.Kf1 Bc3 16.h4 Na5 17.Bd1
-+ (-3.20) Depth: 22 00:04:10 1927mN
1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4 5.Kh1 Qg3 6.Qg2 Qc3 7.Qf1 Qf3+ 8.Qg2 Qe2 9.Bb1 Be3 10.Bd3 Qxf2 11.Qxf2 Bxf2 12.Kg2 Be1 13.Be2 Kf7 14.Bd6 Kf6 15.Kf1 Bc3 16.h4 Na5 17.Bd1
-+ (-3.20) Depth: 22 00:04:10 1927mN
1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4 5.Kh1 Qg3 6.Qg2 Qc3 7.Qf1 Qf3+ 8.Qg2 Qe2 9.Bb1 Be3 10.Bd3 Qxf2 11.Qxf2 Bxf2 12.Kg2 Be1 13.Be2 Kf7 14.Bd6 Kf6 15.Kf1 Bc3 16.h4 Ne5 17.Kf2
-+ (-3.12) Depth: 23 00:04:12 1938mN
Rybka 3
1...e4
-/+ (-0.96 !) Depth: 15 00:00:35 9694kN
1...e4
-/+ (-1.16 !) Depth: 15 00:00:43 12258kN
1...e4
-+ (-1.56 !) Depth: 15 00:01:20 24451kN
1...e4 2.fxe4 Ne5 3.b4 Qa8 4.Bb1 Qa3 5.Bd6 Nxc4[] 6.Bc5 Qb2 7.Bd3 Ne5 8.Be2[] fxe4 9.Nd1 Qc1 10.Qf1 Nd7 11.Ba7 Qc7 12.Nxe3 Qxa7 13.Bc4 Bxc4 14.Qxc4+ Kg7 15.Ng4 h5 16.Nf2 Nf6
-+ (-1.55) Depth: 15 00:01:36 29825kN
1...e4
-+ (-1.75 !) Depth: 16 00:02:03 38495kN
1...e4
-+ (-1.95 !) Depth: 16 00:02:25 45847kN
1...e4 2.fxe4 Ne5[] 3.Bb1 f4[] 4.gxf4 Bxf4[] 5.Qe2 Qg5+ 6.Kf1 Qg3 7.Bxd4 Nf3[] 8.Qd3 Qg1+ 9.Ke2 Nd2[] 10.Be3[] Qf1+[] 11.Kxd2 Qxf2+[] 12.Kc3 Bxe3[] 13.b4 Bg5 14.Kb3 Bf6 15.Qc2 Qd4 16.h4 Bxh4
-+ (-2.20) Depth: 16 00:03:10 60776kN
1...e4 2.fxe4 Ne5[] 3.Bb1 f4[] 4.gxf4 Bxf4[] 5.Qe2 Qg5+ 6.Kf1 Qg3 7.Bxd4 Nf3[] 8.Qd3 Qg1+ 9.Ke2 Nd2[] 10.Be3[] Qf1+[] 11.Kxd2 Qxf2+[] 12.Kc3 Bxe3[] 13.b4 Bg5 14.Kb3 Bf6 15.Qc2 Qd4 16.h4 Bxh4
-+ (-2.20) Depth: 17 00:03:29 67050kN
1...e4 2.fxe4 Ne5[] 3.Bb1 f4[] 4.gxf4 Bxf4[] 5.Qe2 Qg5+ 6.Kf1[] Qg3 7.Bxd4 Nf3[] 8.Qd3 Qg1+ 9.Ke2 Nd2[] 10.Be3[] Qf1+[] 11.Kxd2 Qxf2+[] 12.Kc3 Bxe3[] 13.b4 Bg5 14.Kb3 Bf6 15.Qc2 Qd4 16.h4 Bxh4
-+ (-2.20) Depth: 18 00:04:12 81025kN
FireBird 1.0 beta x64
1...e4
-/+ (-0.91) Depth: 22 00:01:23 623mN
1...e4
-/+ (-1.03) Depth: 22 00:01:26 648mN
1...e4
-/+ (-1.21) Depth: 22 00:01:34 709mN
1...e4
-+ (-1.48) Depth: 22 00:01:45 789mN
1...e4
-+ (-1.88) Depth: 22 00:02:02 918mN
1...e4
-+ (-2.48) Depth: 22 00:02:39 1206mN
1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4 5.Kh1 Qg3 6.Qg2 Qc3 7.Qf1 Qf3+ 8.Qg2 Qe2 9.Bb1 Be3 10.Bd3 Qxf2 11.Qxf2 Bxf2 12.Kg2 Be1 13.Be2 Kf7 14.Bd6 Kf6 15.Kf1 Bc3 16.h4 Na5 17.Bd1
-+ (-3.20) Depth: 22 00:04:10 1927mN
1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4 5.Kh1 Qg3 6.Qg2 Qc3 7.Qf1 Qf3+ 8.Qg2 Qe2 9.Bb1 Be3 10.Bd3 Qxf2 11.Qxf2 Bxf2 12.Kg2 Be1 13.Be2 Kf7 14.Bd6 Kf6 15.Kf1 Bc3 16.h4 Na5 17.Bd1
-+ (-3.20) Depth: 22 00:04:10 1927mN
1...e4 2.fxe4 f4 3.gxf4 Qh4 4.Qf1 Bxf4 5.Kh1 Qg3 6.Qg2 Qc3 7.Qf1 Qf3+ 8.Qg2 Qe2 9.Bb1 Be3 10.Bd3 Qxf2 11.Qxf2 Bxf2 12.Kg2 Be1 13.Be2 Kf7 14.Bd6 Kf6 15.Kf1 Bc3 16.h4 Ne5 17.Kf2
-+ (-3.12) Depth: 23 00:04:12 1938mN
-
zullil
- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: Test position: classic square clearance
1 second for Stockfish-1.6.2 (8 threads):Albert Silver wrote:
[d]3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - - 0 44
44...e4!! 45.fxe4 Ne5!
Code: Select all
Searching: 3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
2 +0.65 00:00 114 Kg7 Nd3
2 +0.97 00:00 349 Qa8 Bb1
3 +0.93 00:00 554 Qa8 Bb1 Kg7
4 +0.93 00:00 1168 Qa8 Bb1 Qb7 Bc2
5 +0.81 00:00 1956 Qa8 Bb1 Qb7 Bc2 Kg7
6 < +0.57 00:00 8025 Qa8 Bb1 Qb7 Bc2 Kg7 Nd3
6 +0.77 00:00 14377 Qg5 h4 Qh5 Nd1 Bc1 Nf2
7 +0.69 00:00 27552 Qg5 h4 Qd8 b4 f4 Nd1 Qa8 Bb3
8 +0.57 00:00 51409 Qg5 h4 Qh6 b4 Bd2 Qe2 Bxb4 Bxb4 Nxb4 Qxe5
8 > +0.89 00:00 69121 Qa8 Qe2 Qa5 Nd3 e4
9 +0.65 00:00 143354 Qa8 Qb1 Bd2 Qb2 Qa5 Qa3 Qxa3 Bxa3 Nb4 Bb1
9 +1.25 00:00 276983 e4 fxe4 Ne5 b4 fxe4 Bb1 Bxc4 Bxe4 Qg5 Kh2 Be6
10 < +0.53 00:00 713834 e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Kf1
10 +0.73 00:00 746212 Qa8 Qb1 Bd2 Qb2 Bc3 Qe2 Qa5 Nd3 e4 Bb1 e3
11 +0.81 00:00 1214k Qa8 Qb1 Bd2 Qb2 Bc3 Qe2 Qa5 Nd3 e4 Bb1 e3 Bc2 Kg7
Nf4
12 +1.09 00:01 2393k Qa8 Bb1 Qa1 Nd3 Kf7 Bc2 Qxe1 Nxe1 Kf6 Nd3 e4 Nf2
d3 Bxe3 exf3+ Kxf3 dxc2
12 > +1.49 00:01 3039k e4 fxe4 Ne5 exf5 Bxf5 Bb1 Qa8+ Kf1 Bxh3+ Nxh3
Qh1+ Ng1 Qxg1+ Ke2 d3+
13 +0.89 00:01 5505k e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Kf1 Qc8 Qb4 Bxh3+
Ke2 Be3 Nxh3 Qg4+ Ke1 Qxh3 Qb8+
14 +1.21 00:03 14633k e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Qb4 Qg5+ Kf1 Nf3 Qa5
Bxh3+ Ke2 Ng1+ Kd3 Qg3+ Kxd4 Nf3+ Kd5 Qg5+ Kc6
Qf6+ Kb7 Bd7 Ka7
15 +1.62 00:03 16446k e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Kh1 d3 Qd1 d2 Bc2 h5
Qg1 Qh4 Qg2 Bg3 Bd6 Kh7 Kg1 Qf4 Bd1 Qe3 Bxe5 Qe1+
Qf1 Bxe5
16 +2.06 00:05 28912k e4 fxe4 Ne5 Bb4 Bxf2 Qxf2 Nd3 Qd2 fxe4 Bb1 Qa8
Kh2 Nxb4 Qxb4 d3 Qd2 Kf7 Qf4+ Ke7 Kg2
17 +2.26 00:07 44729k e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Qd1 Qg5+ Kf1 Nxc4
bxc4 Qxc5 Bd3 Kg7 Qb3 Qc7 Qb5 Qf7 Kg2 h5 e5 Be3
18 +2.06 00:10 62938k e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Qd1 Qg5+ Kf1 Nxc4
bxc4 Qxc5 Bd3 Kg7 Qb3 h5 Qb7+ Bc7 Qb5 Qa3 Qb7
Qa1+ Ke2 Qa5 h4 Kf6 Kd1
19 > +2.67 00:15 106403k e4 f4 Qa8 Bb1 Qa1 Qd1 Qa5 Bd6 Qc3 Nxe4 fxe4 Bxe4
Na5
20 +2.95 00:27 200360k e4 f4 Qa8 Qe2 d3 Qxe3 Qxa2 Qe1 Qb2 Qd1 Kf7 Be3
Na5 Qe1 Nxb3 Qb4 Qe2 Qb7+ Kf8 Qb8+ Kg7 Qc7+ Kh6
Bb6 Qf3+ Kh2
21 +2.87 01:03 485366k e4 fxe4 Ne5 Qe2 f4 gxf4 Bxf4 Bb1 Qh4 Bxd4 Qg3+
Kf1 Nf3 Qd3 Qg1+ Ke2 Nd2 Be3 Qf1+ Kxd2 Qxf2+ Qe2
Bxe3+ Kd3 Qxe2+ Kxe2 Bc5 h4 Be7 Kf3 Bxh4 Bd3 Kf7
b4 Ke7
22 > +3.35 02:03 965730k e4 fxe4 Ne5 Qe2 f4 gxf4
Nodes: 1031304674
Nodes/second: 7827085
Best move: e4
Ponder move: fxe4
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Marc MP
Re: Test position: classic square clearance
[d]3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - - 0 44
GambitFruit 4bxSE seems to alternate between 1... e4 2. fe4 Ne5 and 1... e4 2. fe4 f4
00:00:44.1 1,21 14 17962092 Bxf2 Qxf2 Qa5 b4 Nxb4 Bxb4 Qxb4 c5 Bxa2 Qxa2+ Kg7 c6 Qc5 Qe6 Qc2+ Kf1 Qd3+ Kg2 Qe2+ Kg1 Qe1+ Kg2 Qd2+ Kf1
00:00:58.7 1,21 15 Bxf2 Qxf2 Qa5 b4 Nxb4 Bxb4 Qxb4 c5 Bxa2 Qxa2+ Kg7 c6 Qc5 Qe6 Qc2+ Kf1 Qd3+ Kg2 Qe2+ Kg1 Qe1+ Kg2 Qd2+ Kf1
00:01:54.7 1,61 15 e4 fxe4 f4 gxf4 Qh4 f5 gxf5 Bd6 fxe4 Bg3 Qh5 Qa1
00:03:00.8 1,39 16 e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1 Qb2 Bb1 Qxb3 Bd3
00:05:06.7 1,66 17 e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Kf1 Nf3 Qd1 Nd2+ Ke2 Qg5 Bxd4 Qh5+ Kd3 Qxd1 Nxd1 Nxb1 Nf2 Nd2
00:09:14.2 2,04 18 e4 fxe4 Ne5 Bb4 Qg5 h4 Qf6 Bd6 fxe4 Bxe5 Qxe5 Bb1 Bxf2 Qxf2 d3 Qd2 Kg7 Kh2 Bg4 b4
00:15:50.2 2,10 19 e4 fxe4 Ne5 Bb4 Qg5 h4 Qf6 Bd6 fxe4 Bxe5 Qxe5 Bb1 Bxf2 Qxf2 d3 Qd2 Qf6 Kg1 Qa1 Qa2 Qxa2 Bxa2
00:32:25.4 2,20 20 e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1 Qf3+ Qg2 Qe2 Ng4 Bxg4 hxg4 Qe1+ Qg1 Qxe4+ Qg2 Qe1+ Qg1 Qh4+ Kg2 Qxg4+ Kf1 Qd1+ Kg2
GambitFruit 4bxSE seems to alternate between 1... e4 2. fe4 Ne5 and 1... e4 2. fe4 f4
00:00:44.1 1,21 14 17962092 Bxf2 Qxf2 Qa5 b4 Nxb4 Bxb4 Qxb4 c5 Bxa2 Qxa2+ Kg7 c6 Qc5 Qe6 Qc2+ Kf1 Qd3+ Kg2 Qe2+ Kg1 Qe1+ Kg2 Qd2+ Kf1
00:00:58.7 1,21 15 Bxf2 Qxf2 Qa5 b4 Nxb4 Bxb4 Qxb4 c5 Bxa2 Qxa2+ Kg7 c6 Qc5 Qe6 Qc2+ Kf1 Qd3+ Kg2 Qe2+ Kg1 Qe1+ Kg2 Qd2+ Kf1
00:01:54.7 1,61 15 e4 fxe4 f4 gxf4 Qh4 f5 gxf5 Bd6 fxe4 Bg3 Qh5 Qa1
00:03:00.8 1,39 16 e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1 Qb2 Bb1 Qxb3 Bd3
00:05:06.7 1,66 17 e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Kf1 Nf3 Qd1 Nd2+ Ke2 Qg5 Bxd4 Qh5+ Kd3 Qxd1 Nxd1 Nxb1 Nf2 Nd2
00:09:14.2 2,04 18 e4 fxe4 Ne5 Bb4 Qg5 h4 Qf6 Bd6 fxe4 Bxe5 Qxe5 Bb1 Bxf2 Qxf2 d3 Qd2 Kg7 Kh2 Bg4 b4
00:15:50.2 2,10 19 e4 fxe4 Ne5 Bb4 Qg5 h4 Qf6 Bd6 fxe4 Bxe5 Qxe5 Bb1 Bxf2 Qxf2 d3 Qd2 Qf6 Kg1 Qa1 Qa2 Qxa2 Bxa2
00:32:25.4 2,20 20 e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1 Qf3+ Qg2 Qe2 Ng4 Bxg4 hxg4 Qe1+ Qg1 Qxe4+ Qg2 Qe1+ Qg1 Qh4+ Kg2 Qxg4+ Kf1 Qd1+ Kg2
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zullil
- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: Test position: classic square clearance
After running longer, Stockfish-1.6.2 seems to suggest that 1... e4 2. fxe4 f4 is so strong that White should try 2. f4 rather than capturing on e4.Marc MP wrote:[d]3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - - 0 44
GambitFruit 4bxSE seems to alternate between 1... e4 2. fe4 Ne5 and 1... e4 2. fe4 f4
Code: Select all
Searching: 3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - -
infinite: 1 ponder: 0 time: 0 increment: 0 moves to go: 0
2 +0.65 00:00 114 Kg7 Nd3
2 +0.97 00:00 349 Qa8 Bb1
3 +0.93 00:00 554 Qa8 Bb1 Kg7
4 +0.93 00:00 1168 Qa8 Bb1 Qb7 Bc2
5 +0.81 00:00 1956 Qa8 Bb1 Qb7 Bc2 Kg7
6 < +0.57 00:00 8025 Qa8 Bb1 Qb7 Bc2 Kg7 Nd3
6 +0.77 00:00 14377 Qg5 h4 Qh5 Nd1 Bc1 Nf2
7 +0.69 00:00 27552 Qg5 h4 Qd8 b4 f4 Nd1 Qa8 Bb3
8 +0.57 00:00 51385 Qg5 h4 Qh6 b4 Bd2 Qe2 Bxb4 Bxb4 Nxb4 Qxe5
8 > +0.89 00:00 68929 Qa8 Qe2 Qa5 Nd3 e4
9 +0.61 00:00 171304 Qa8 Bb1 Qb7 Bc2 Kg7 Nd1 Bg5 Bd6 Bf6
9 +0.89 00:00 350419 Kg7 Nd1 f4 Bb1 Na5 Nxe3 fxe3 Qb4 Nc6 Qb7+ Bd7
10 +0.89 00:00 649027 Kg7 Nd1 f4 Bb1 Qa5 Qxa5 Nxa5 Bc2 Kf6 Nf2 fxg3
Ne4+ Kf5 Kxg3
11 +1.05 00:01 1174k Kg7 Nd1 f4 Bb1 Qc7 Be4 Qa5 Qxa5 Nxa5 Bd6 Kf6 gxf4
Bxf4
12 < +0.73 00:01 2353k Kg7 Bb1 f4 g4 Na5 Ne4 Nxb3 Bd6
12 +0.97 00:01 2667k Qa8 Bb1 Qa1 Qd1 e4 g4 Bxf2 Kxf2 Qb2+ Ke1 d3 fxe4
fxe4 Be3
12 > +1.37 00:01 2963k e4 fxe4 Ne5 exf5 Qa8+ Kf1 Bxf5
13 +1.37 00:01 3717k e4 fxe4 Ne5 Bb1 f4 gxf4 Bxf4 Ng4 Nxg4 hxg4 d3 Qd1
d2 Bc2 Qg5 b4 Bxc4
14 +0.97 00:02 13248k e4 fxe4 f4 gxf4 Qh4 Qe2 Bxf4 Kf1 Bxh3+ Ke1 Be3
Qf3 Bxf2+ Qxf2 Qxe4+ Qe2 Qh1+ Kd2 Bd7
14 +1.13 00:03 15233k Qa8 Bb1 Qa1 Nd3 e4 fxe4 fxe4 Qf1 Bh6 Qe1 e3 g4
Qa8 Kg1 Qb7 Bc2
15 +1.05 00:03 17739k Qa8 Bb1 Qa1 Qd1 e4 g4 Bxf2 Kxf2 d3 gxf5 gxf5 Qc1
Qe5 Qg1+ Kf7 Kf1 Ke8
15 > +1.94 00:04 21160k e4 fxe4 f4 b4 Qg5 Nd3 Ne5 Nxe5 Qxe5
16 +1.86 00:06 38677k e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1
Qd2 Bb1 Na5 Bd3 Nxb3 Bb6 Bxh3 Qxh3 Qxf2
17 +2.51 00:08 50696k e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1
Qf3+ Qg2 Qe2 Ng4 d3 Qxe2 dxe2 Bf2 Bd2 Kg2 Kf7 Bb1
e1=Q Bxe1 Bxe1 Kf1 Bg3 Bd3
18 +2.99 00:11 79851k e4 fxe4 f4 Nd3 Qg5 Nxf4 Bxf4 Qf2 Qxc5 gxf4 Qa3 f5
gxf5 exf5 Bxf5 Qxf5 Qxa2+ Kf1 Qa1+ Kg2 Qb2+ Kf1
Qc1+ Kg2 Qd2+ Kg3 Qe3+ Qf3 Kg7
19 +2.71 00:19 145066k e4 f4 Qa8 Qe2 d3 Qxe3 Qxa2 Qe1 d2 Qe2 Na5 Bb4
Nxb3 Bc3 Qa6 Qe3 Bxc4 Bxd2 Bf1+ Kg1 Nxd2 Qxd2 Qe2
Qxe2 Bxe2
20 +3.15 00:40 309457k e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1
Qf3+ Qg2 Qe2 Bb1 Be3 Bd3 Qe1+ Qf1 Qxf1+ Bxf1 Bxf2
Kg2 Be3 b4 Ne5 b5 Kf7 b6 Nxc4 b7
21 +3.35 01:00 468200k e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1
Qf3+ Qg2 Qe2 Bb1 Be3 Bd3 Qe1+ Qf1 Qxf2 Qxf2 Bxf2
Kg2 Be3 Bd6 Na5 Bc2 Kf7 Kg3 Kf6 e5+ Kg5
22 +3.27 01:25 655599k e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1
Qf3+ Qg2 Qe2 Bb1 Be3 Bd3 Qe1+ Qf1 Qxf2 Qxf2 Bxf2
Kg2 Be3 Bd6 Na5 Bc2 Kf7 Kg3 Kf6 e5+ Kf7
23 > +3.64 02:36 1214M e4 Nd1 exf3+ Kf1 f4 g4 Qg5 Bd6 Bxg4 hxg4 Qxg4
Nxe3 dxe3 Qb1 Qg2+
24 +3.68 06:35 3081M e4 fxe4 f4 gxf4 Qh4 Qf1 Bxf4 Kh1 Qg3 Qg2 Qc3 Qf1
Qf3+ Qg2 Qe2 Bb1 Be3 Bd3 Qe1+ Qf1 Bxf2 Kg2 Qe3
Qxf2 Qg5+ Qg3 Qxc5 Kf1 Qb4 Be2 Na5 Bd1 Qd2 Be2
Kf7 Kf2
25 +3.80 20:57 9797M e4 f4 Qa8 Bb1 Qa1 Qd1 Qc3 Qe2 Qxb3 Qa2 Qxa2 Bxa2
Bd2 Kf1 d3 Nd1 Na5 Be3 Bb4 Nb2 Ba3 Bd2 Bxb2 Bxa5
Bd4 Ke1 e3 Bb3 Kg7 Kd1 Kf6 Ke1 Bc5 Bd8+ Kg7 Ba5
Kh6
26 +3.80 33:44 15742M e4 f4 Qa8 Bb1 Qa1 Qd1 Qc3 Qe2 Qxb3 Qa2 Qxa2 Bxa2
Bd2 Kf1 d3 Nd1 Na5 Be3 Bb4 Nb2 Ba3 Bd2 Bxb2 Bxa5
Bd4 Ke1 e3 Bb3 Kg7 Kd1 Kh6 Bb4 Kh5 Ke1 g5 fxg5
Kxg5 Be7+ Kh5
27 > +4.00 53:42 25093M e4 fxe4 f4 gxf4 Bxf4 Kh1 Bg3 Qe2 Qf6 Kg2 Bxf2
Qxf2
28 +3.96 3:07:49 88001M e4 f4 Qa8 Bb1 Qa1 Qd1 Qc3 Qe2 Qxb3 Qa2 Qxa2 Bxa2
Kf7 Nd1 Bd2 h4 Bb4 Bb6 Ba5 Bc5 Be1 Nb2 h6 Nd1 Kf6
Bb3 Bb4 Bb6 Ke7 Nb2 Kd6 Na4 Na5 c5+ Ke7 Bxe6 Kxe6
Kf2 Nc6 Ke2
Nodes: 231345381075
Nodes/second: 7813935
Best move: e4
Ponder move: f4
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Eelco de Groot
- Posts: 4662
- Joined: Sun Mar 12, 2006 2:40 am
- Full name: Eelco de Groot
Re: Test position: classic square clearance
[quote="zullil"]
After running longer, Stockfish-1.6.2 seems to suggest that 1... e4 2. fxe4 f4 is so strong that White should try 2. f4 rather than capturing on e4.
[quote]
Rainbow Serpent thinks so too:
3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - -
Engine: Rainbow Serpent 1.6.3s(dc) Build 61 (Athlon 2009 MHz, 128 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski Modifications: Dann Corbit
1.00 0:00 +1.65 1...f4 (73) 0
2.00 0:00 +0.88 1...f4 2.Ng4 (131) 1
2.00 0:00 +0.96 1...Qa8 2.Bb1 (344) 2
3.00 0:00 +1.05 1...Qa8 2.Bb1 Na5 (606) 4
4.00 0:00 +1.05 1...Qa8 2.Bb1 Na5 3.Bc2 (1.156) 9
5.00 0:00 +1.13 1...Qa8 2.Qb1 Qd8 3.Nd1 Bd2 (3.808) 27
6.00 0:00 +1.09 1...Qa8 2.Qb1 Qd8 3.Nd1 f4 4.Nxe3 fxe3 (6.198) 43
7.00 0:00 +0.88-- 1...Qa8 2.Qb1 Qd8 3.Nd1 f4 4.Qe4 (29.749) 146
8.00 0:00 +0.92 1...Qa8 2.Qb1 Qd8 3.Qe1 f4 4.Ng4 Bxg4
5.hxg4 fxg3 6.Qxg3 (58.912) 221
8.00 0:00 +1.73++ 1...e4 2.fxe4 Ne5 3.Kh1 fxe4 4.Nxe4 Bxh3 (79.689) 255
9.00 0:00 +1.73 1...e4 2.fxe4 Ne5 3.Bb1 f4 4.Nd1 Bxh3+
5.Kh1 Nf3 6.Qe2 Ng1 (214.575) 352
10.00 0:01 +1.57 1...e4 2.f4 Qa8 3.Qb1 Qd8 4.Nd1 Bd2
5.b4 Be1 6.b5 Na5 (565.930) 411
11.01 0:02 +1.97 1...e4 2.fxe4 Ne5 3.Bb1 f4 4.Nd1 Bxh3+
5.Kh1 Nf3 6.Qe2 Bg4 7.Nxe3 fxe3
8.Qa2 Nd2 9.Kg1 (1.187.225) 449
12.01 0:04 +2.54 1...e4 2.f4 Qa8 3.Qe2 d3 4.Qxe3 Qxa2
5.g4 Qxb3 6.gxf5 gxf5 7.Qg3+ Kh8
8.Qg5 Qc3 9.Nd1 Qa1 10.Ne3 Qb2+
11.Kg1 d2 12.Nd1 (1.966.575) 459
13.01 0:06 +2.54 1...e4 2.f4 Qa8 3.Qe2 d3 4.Qxe3 Qxa2
5.g4 Qxb3 6.gxf5 gxf5 7.Qg3+ Kh8
8.Qg5 Qb2 9.Be3 Qc3 10.Qh6 Qg7+
11.Qxg7+ Kxg7 12.c5 Bb3 13.Kf1 Kf6
14.Ke1 Ke6 (3.277.922) 473
14.01 0:11 +2.94 1...e4 2.f4 Qa8 3.Bb1 Qa1 4.Qd1 Qc3
5.Bb6 Kf7 6.h4 Bxc4 7.bxc4 Bxf2
8.Kxf2 Qb2+ 9.Qc2 Qxb6 10.c5 Qb5
11.Ba2+ Kf6 (5.918.315) 499
15.01 0:23 +2.90 1...e4 2.f4 Qa8 3.Qb1 Bd2 4.Kh2 Nb4
5.Bxb4 Bxb4 6.Qb2 Kf7 7.Nd1 d3 8.Bb1 d2
9.Qe5 Qa3 10.Bc2 Bc5 11.Qc7+ Be7 (11.664.321) 498
16.01 0:41 +3.15 1...e4 2.f4 Qa8 3.Qe2 Bxf2 4.Kxf2 e3+
5.Kg1 Qa5 6.b4 Nxb4 7.Bxd4 Qxa2
8.Qxa2 Nxa2 9.c5 Nb4 10.Bxe3 Kf7
11.Kf2 Ke7 12.Ke2 Kd7 13.Kd2 Kc6
14.Bd4 Kd5 (20.358.194) 490
17.01 1:32 +3.39 1...e4 2.f4 Qa8 3.Qe2 Bxf2 4.Kxf2 e3+
5.Kg1 Qa5 6.b4 Nxb4 7.Bxd4 Qxa2
8.Qxa2 Nxa2 9.c5 Nb4 10.Bxe3 Kf7
11.Kf2 Ke8 12.Bd4 Kd7 13.Ke3 Kc6
14.Be5 Kxc5 (45.651.287) 491
18.01 2:32 +3.39 1...e4 2.fxe4 Ne5 3.Qb4 Bxf2 4.Qb6 Qxb6
5.Bxb6 Be3 6.Bb1 fxe4 7.Bxe4 Nd7
8.Ba7 Kf7 9.g4 Ne5 10.Kg3 Kf6 11.Bb8 Bc8
12.Bd6 Bd7 13.Bc5 h5 14.gxh5 gxh5 (76.185.000) 499
19.01 6:02 +3.51 1...e4 2.f4 Qa8 3.Bb1 Qa1 4.Qd1 Qc3
5.Qe2 Qxb3 6.Qa2 Qxa2 7.Bxa2 Bd2
8.Kf1 d3 9.Nd1 Nb4 10.Bb3 Nc2 11.Kf2 Kf7
12.Ne3 Be1+ 13.Kg2 Nxe3+ 14.Bxe3 Ke7 (180.537.276) 498
best move: e5-e4 time: 6:16.891 min n/s: 499.482 nodes: 188.250.281
After running longer, Stockfish-1.6.2 seems to suggest that 1... e4 2. fxe4 f4 is so strong that White should try 2. f4 rather than capturing on e4.
[quote]
Rainbow Serpent thinks so too:
3q2k1/7p/2n1b1p1/2B1pp2/2Pp4/1P2bPPP/B4NK1/4Q3 b - -
Engine: Rainbow Serpent 1.6.3s(dc) Build 61 (Athlon 2009 MHz, 128 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski Modifications: Dann Corbit
1.00 0:00 +1.65 1...f4 (73) 0
2.00 0:00 +0.88 1...f4 2.Ng4 (131) 1
2.00 0:00 +0.96 1...Qa8 2.Bb1 (344) 2
3.00 0:00 +1.05 1...Qa8 2.Bb1 Na5 (606) 4
4.00 0:00 +1.05 1...Qa8 2.Bb1 Na5 3.Bc2 (1.156) 9
5.00 0:00 +1.13 1...Qa8 2.Qb1 Qd8 3.Nd1 Bd2 (3.808) 27
6.00 0:00 +1.09 1...Qa8 2.Qb1 Qd8 3.Nd1 f4 4.Nxe3 fxe3 (6.198) 43
7.00 0:00 +0.88-- 1...Qa8 2.Qb1 Qd8 3.Nd1 f4 4.Qe4 (29.749) 146
8.00 0:00 +0.92 1...Qa8 2.Qb1 Qd8 3.Qe1 f4 4.Ng4 Bxg4
5.hxg4 fxg3 6.Qxg3 (58.912) 221
8.00 0:00 +1.73++ 1...e4 2.fxe4 Ne5 3.Kh1 fxe4 4.Nxe4 Bxh3 (79.689) 255
9.00 0:00 +1.73 1...e4 2.fxe4 Ne5 3.Bb1 f4 4.Nd1 Bxh3+
5.Kh1 Nf3 6.Qe2 Ng1 (214.575) 352
10.00 0:01 +1.57 1...e4 2.f4 Qa8 3.Qb1 Qd8 4.Nd1 Bd2
5.b4 Be1 6.b5 Na5 (565.930) 411
11.01 0:02 +1.97 1...e4 2.fxe4 Ne5 3.Bb1 f4 4.Nd1 Bxh3+
5.Kh1 Nf3 6.Qe2 Bg4 7.Nxe3 fxe3
8.Qa2 Nd2 9.Kg1 (1.187.225) 449
12.01 0:04 +2.54 1...e4 2.f4 Qa8 3.Qe2 d3 4.Qxe3 Qxa2
5.g4 Qxb3 6.gxf5 gxf5 7.Qg3+ Kh8
8.Qg5 Qc3 9.Nd1 Qa1 10.Ne3 Qb2+
11.Kg1 d2 12.Nd1 (1.966.575) 459
13.01 0:06 +2.54 1...e4 2.f4 Qa8 3.Qe2 d3 4.Qxe3 Qxa2
5.g4 Qxb3 6.gxf5 gxf5 7.Qg3+ Kh8
8.Qg5 Qb2 9.Be3 Qc3 10.Qh6 Qg7+
11.Qxg7+ Kxg7 12.c5 Bb3 13.Kf1 Kf6
14.Ke1 Ke6 (3.277.922) 473
14.01 0:11 +2.94 1...e4 2.f4 Qa8 3.Bb1 Qa1 4.Qd1 Qc3
5.Bb6 Kf7 6.h4 Bxc4 7.bxc4 Bxf2
8.Kxf2 Qb2+ 9.Qc2 Qxb6 10.c5 Qb5
11.Ba2+ Kf6 (5.918.315) 499
15.01 0:23 +2.90 1...e4 2.f4 Qa8 3.Qb1 Bd2 4.Kh2 Nb4
5.Bxb4 Bxb4 6.Qb2 Kf7 7.Nd1 d3 8.Bb1 d2
9.Qe5 Qa3 10.Bc2 Bc5 11.Qc7+ Be7 (11.664.321) 498
16.01 0:41 +3.15 1...e4 2.f4 Qa8 3.Qe2 Bxf2 4.Kxf2 e3+
5.Kg1 Qa5 6.b4 Nxb4 7.Bxd4 Qxa2
8.Qxa2 Nxa2 9.c5 Nb4 10.Bxe3 Kf7
11.Kf2 Ke7 12.Ke2 Kd7 13.Kd2 Kc6
14.Bd4 Kd5 (20.358.194) 490
17.01 1:32 +3.39 1...e4 2.f4 Qa8 3.Qe2 Bxf2 4.Kxf2 e3+
5.Kg1 Qa5 6.b4 Nxb4 7.Bxd4 Qxa2
8.Qxa2 Nxa2 9.c5 Nb4 10.Bxe3 Kf7
11.Kf2 Ke8 12.Bd4 Kd7 13.Ke3 Kc6
14.Be5 Kxc5 (45.651.287) 491
18.01 2:32 +3.39 1...e4 2.fxe4 Ne5 3.Qb4 Bxf2 4.Qb6 Qxb6
5.Bxb6 Be3 6.Bb1 fxe4 7.Bxe4 Nd7
8.Ba7 Kf7 9.g4 Ne5 10.Kg3 Kf6 11.Bb8 Bc8
12.Bd6 Bd7 13.Bc5 h5 14.gxh5 gxh5 (76.185.000) 499
19.01 6:02 +3.51 1...e4 2.f4 Qa8 3.Bb1 Qa1 4.Qd1 Qc3
5.Qe2 Qxb3 6.Qa2 Qxa2 7.Bxa2 Bd2
8.Kf1 d3 9.Nd1 Nb4 10.Bb3 Nc2 11.Kf2 Kf7
12.Ne3 Be1+ 13.Kg2 Nxe3+ 14.Bxe3 Ke7 (180.537.276) 498
best move: e5-e4 time: 6:16.891 min n/s: 499.482 nodes: 188.250.281
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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parrish
- Posts: 2651
- Joined: Fri Mar 17, 2006 6:05 am
Re: Test position: classic square clearance
What the hell Albert? Why are YOU using Robbo when you claim it is ILLEGAL software??Albert Silver wrote:Robbo had taken a one point lead, but Rybka struck back with two wins, deciding the last game with the following shot.
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Oratios
Re: Test position: classic square clearance
Here Sparc 0.3 finds fast the right continuation.
update : engine Critter 0.52 finds the move immediately !
update : engine Critter 0.52 finds the move immediately !