zullil wrote:Uri Blass wrote:In the following game that is posted also in another thread Rybka3 played 53...a3(unexpected by stockfish) and got an advantage(Rybka3 did not win it but I thought it may be a good test position to see how much time stockfish needs to find it).
Stockfish 1.6 JA - Rybka 3 1-cpu 32-bit, Super Tournament X 2009
[d]4bNk1/1q4p1/5p1p/2QP1Pn1/p3P3/1p2K1P1/1B5P/8 b - - 0 1
RobboLito_0085g3l_x86 finds a3 in about 5 seconds at depth 15 on my 2 GHz Core 2 Duo MacBook:
Code: Select all
1 +0.95 1.... Nxe4 2.Kxe4 (0.00)
1 -0.69 1.... Kh8 2.Ng6+ Bxg6 3.fxg6 (0.00)
1 -0.83 1.... Bf7 (0.00)
1 -0.91 1.... Bh5 2.Ng6 Bxg6 3.fxg6 (0.00)
1 -0.99 1.... Qb8 2.Ng6 Bxg6 3.fxg6 (0.00)
2 -0.40 1.... Qb8 2.Ne6 (0.00)
2 -0.44 1.... Bh5 2.Ne6 (0.00)
2 -0.47 1.... Bb5 2.Ne6 (0.00)
3 -0.35 1.... Bb5 2.Ne6 Qb8 3.d6 Qb7 4.Nxg5 hxg5 5.Qd5+ Qxd5 6.exd5 (0.00)
4 -0.23 1.... Bb5 2.h4 Nh3 3.Ne6 (0.00)
4 -0.52 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.Kd3 Nf3 (0.00)
5 -0.52 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.Kd3 Nf3 (0.00)
6 -0.25 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.h4 Nh3 5.Kd4 Ke7 6.Kc3 (0.01)
7 -0.25 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.h4 Nh3 5.Kd4 Ke7 6.Kc3 (0.01)
8 -0.25 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.h4 Nh3 5.Kd4 Ke7 6.Kc3 (0.01)
9 -0.31 1.... Bb5 2.Ne6 Qb8 3.d6 Bd7 4.Nxg5 hxg5 5.e5 fxe5 6.Qxe5 Qb6+ 7.Kd3 (0.08)
10 -0.11 1.... Bb5 2.Ne6 Qb8 3.d6 Bd7 4.Nxg5 hxg5 5.e5 fxe5 6.Qxe5 Qf8 7.Qd5+ Qf7 8.Qa8+ Be8 (0.25)
11 -0.16 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.h4 Nh3 5.d6 Bc6 6.Ne6 Bd7 7.Nc5 Ke8 8.Kd4 Nf2 9.Kc4 Ng4 10.Kb4 (0.43)
12 -0.14 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.h4 Nh3 5.d6 Bc6 6.Ne6 Bd7 7.Nc5 Ke8 8.Kd4 Nf2 9.Kc4 Ng4 10.Kb4 (0.44)
13 -0.15 1.... Qb5 2.Ne6 Qxc5+ 3.Nxc5 Kf7 4.h4 Nh3 5.d6 Bc6 6.g4 Bb5 7.Kd4 Nf2 8.g5 hxg5 9.hxg5 fxg5 10.e5 Ke8 11.Ne6 Kd7 12.Nxg7 (0.55)
14 -0.23 1.... Bh5 2.Ne6 Nxe6 3.fxe6 Qa6 4.Kd4 Qe2 5.Qc8+ Kh7 6.Qc3 Bg6 7.Kc5 Qxe4 8.Qd2 Kg8 9.h4 Be8 (1.66)
14 -0.18 1.... Bh5 2.Ne6 Nxe6 3.fxe6 Qa6 4.Kd4 Qe2 5.Qc8+ Kh7 6.Qc3 Bg6 7.Kc5 Qxe4 8.Qd4 Qe2 9.d6 Qxe6 10.d7 Qe7+ 11.Kb5 Qd8 12.g4 Kg8 13.Kxa4 Bf7 14.Qd3 Kf8 15.Qd6+ Kg8 16.Qd3 (1.89)
15 -0.25 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Ng6 Bxg6 5.Qxb2 Qxb2 6.Bxb2 Bh5 7.h4 Nf3 8.d6 Kf7 9.Kf4 Ne1 10.Ke3 Ke8 11.e5 Kd7 12.exf6 gxf6 13.Bxf6 Kxd6 14.Bc3 Nf3 15.Ke4 (4.57)
16 -0.30 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Ng6 Bxg6 5.Qxb2 Qxb2 6.Bxb2 Bh5 7.h4 Nf7 8.Kf4 Nd6 9.Bc3 Nc4 10.g4 Be8 11.g5 Kf7 12.Bb4 Ba4 13.gxh6 gxh6 (5.49)
17 -0.36 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Ng6 Bxg6 5.Qxb2 Qxb2 6.Bxb2 Bh5 7.h4 Nf7 8.Bc3 Nd6 9.Bb4 Nc4+ 10.Kd4 Ne5 11.Bc3 Kf7 12.Kc5 Nd7+ 13.Kc6 Ke8 14.d6 Bf3 (8.81)
18 -0.44 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Ng6 Bxg6 5.Qxb2 Qxb2 6.Bxb2 Bh5 7.h4 Nf7 8.Bc3 Nd6 9.Kf4 Nc4 10.g4 Be8 11.g5 Kf7 12.Bb4 Ba4 13.gxh6 gxh6 14.d6 Bd7 (15.28)
18 -0.48 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Qxb2 Qxb2 5.Bxb2 Kxf8 6.Ba3+ Kg8 7.Bb4 Nf7 8.Kd4 Bd7 9.h4 Ne5 10.Kc5 Kf7 11.Kd6 Bb5 12.Kc7 Nd3 13.Ba3 Nf2 14.Kb6 Bd3 (21.75)
19 -0.50 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Qxb2 Qxb2 5.Bxb2 Kxf8 6.Ba3+ Kg8 7.Bb4 Nf7 8.Kd4 Ne5 9.h3 Bb5 10.Bd6 Nd7 11.Bb4 Kf7 12.Bd2 Bf1 13.h4 Bb5 14.d6 h5 15.Kd5 Ke8 16.Bb4 Be2 17.Bc3 Bf3 18.Bd2 Kd8 (28.86)
20 -0.51 1.... a3 2.Qxa3 Qb6+ 3.Bd4 b2 4.Qxb2 Qxb2 5.Bxb2 Kxf8 6.Ba3+ Kg8 7.Bb4 h5 8.Bc3 Nh3 9.Kd4 Bd7 10.Be1 Kf7 11.Ke3 Ke8 12.Bc3 Ng5 13.Bd4 Nf7 14.Kf4 Nd6 (43.22)
same for stockfish1.6s except the fact that 1.6s needs depth 14:
Stockfish 1.6 JA - Rybka 3 1-cpu 32-bit, Super Tournament X 2009
4bNk1/1q4p1/5p1p/2QP1Pn1/p3P3/1p2K1P1/1B5P/8 b - - 0 1
Analysis by Stockfish 1.6s:
53...Be8-b5
-+ (-1.81) Depth: 1 00:00:00
53...Be8-b5 54.Nf8-e6
µ (-1.21) Depth: 2 00:00:00
53...Be8-b5 54.Nf8-e6 Ng5-h3
³ (-0.44) Depth: 3 00:00:00
53...Be8-b5 54.Nf8-e6 Qb7-b8 55.Ne6xg5 h6xg5
= (0.16) Depth: 4 00:00:00
53...Be8-h5 54.Nf8-e6 Ng5-f3 55.h2-h3
³ (-0.44) Depth: 4 00:00:00
53...Be8-h5 54.Nf8-e6 Ng5-f3 55.Qc5-c7 Qb7xc7 56.Ne6xc7 Nf3xh2
³ (-0.44) Depth: 5 00:00:00
53...Be8-h5 54.Nf8-e6 Ng5-f3 55.h2-h3 Nf3-e5 56.Bb2xe5
= (-0.24) Depth: 6 00:00:00 5kN
53...Be8-h5 54.Nf8-e6 Ng5xe6 55.f5xe6 Qb7-a6 56.Qc5-c1 Qa6-e2+ 57.Ke3-d4 Qe2-f2+ 58.Kd4-c4 Qf2-e2+ 59.Kc4-b4 Qe2xe4+ 60.Qc1-c4
² (0.28) Depth: 7 00:00:00 12kN
53...Be8-h5 54.Nf8-e6 Ng5xe6 55.f5xe6 Qb7-a6 56.Ke3-d4 Qa6-e2 57.Qc5-c8+ Kg8-h7 58.Qc8-c3 Bh5-g6 59.Kd4-c5 Bg6xe4
² (0.64) Depth: 8 00:00:00 104kN
53...Be8-b5 54.Nf8-e6 Qb7-b8 55.Ne6xg5 h6xg5 56.d5-d6 Bb5-d7 57.e4-e5 f6xe5 58.Qc5xe5
² (0.44) Depth: 8 00:00:01 111kN
53...Be8-b5 54.Nf8-e6 Qb7-b8 55.Ne6xg5 h6xg5 56.d5-d6 Bb5-d7 57.e4-e5 f6xe5 58.Qc5xe5 Qb8-f8 59.Ke3-e4 Kg8-f7 60.Qe5-d5+ Kf7-e8
² (0.52) Depth: 9 00:00:01 144kN
53...Qb7-a6 54.Nf8-e6 Ng5xe6 55.f5xe6 Qa6-f1 56.Qc5-c1 Qf1-g2 57.Qc1-d2 Qg2-g1+ 58.Qd2-f2 Qg1xf2+ 59.Ke3xf2 Kg8-f8 60.Kf2-e3
² (0.40) Depth: 9 00:00:01 187kN
53...Qb7-a6 54.Nf8-e6 Ng5xe6 55.f5xe6 Qa6-f1 56.Qc5-c1 Qf1-g2 57.Qc1-d2 Qg2-g1+ 58.Qd2-f2 Qg1xf2+ 59.Ke3xf2 Be8-b5 60.Kf2-e3 Kg8-f8 61.Ke3-d4 Kf8-e7 62.Bb2-a3+ Ke7-d8
² (0.56) Depth: 10 00:00:01 240kN
53...Qb7-a6 54.Nf8-e6 Ng5xe6 55.f5xe6 Be8-h5 56.Ke3-d4 Qa6-e2 57.Qc5-c8+ Kg8-h7 58.Qc8-c3 Bh5-g6 59.Kd4-c5 Qe2xe4 60.Qc3-c4 Qe4-g2 61.d5-d6 Qg2xb2 62.Qc4xa4 Qb2-c2+
= (0.20) Depth: 11 00:00:01 454kN
53...Qb7-a6 54.Nf8-e6 Ng5xe6 55.f5xe6 Be8-h5 56.Ke3-d4 Qa6-e2 57.Qc5-c8+ Kg8-h7 58.Qc8-c3 Bh5-g6 59.Kd4-c5 Qe2xe4 60.Qc3-d4 Qe4xd4+ 61.Kc5xd4 Kh7-g8 62.Bb2-a3 Bg6-f5 63.Kd4-c4 Bf5-g6 64.d5-d6
² (0.64) Depth: 12 00:00:01 601kN
53...Qb7-b5 54.Nf8-e6 Qb5xc5+ 55.Ne6xc5 Be8-b5 56.h2-h4 Ng5-f7 57.Ke3-d2 Nf7-d6 58.Kd2-c3 Kg8-f7 59.Kc3-b4 Bb5-e8 60.g3-g4 Kf7-e7 61.Nc5xa4 h6-h5 62.g4xh5 Nd6xe4 63.Kb4xb3 Be8xh5
² (0.56) Depth: 12 00:00:01 930kN
53...Qb7-b5 54.Nf8-e6 Qb5xc5+ 55.Ne6xc5 Kg8-f8 56.h2-h4 Ng5-f7 57.Bb2-a3 Kf8-g8 58.Nc5-d3 Nf7-e5 59.Nd3xe5 f6xe5 60.Ke3-d2 Kg8-f7 61.Kd2-c3 Kf7-f6 62.Kc3-b2
² (0.40) Depth: 13 00:00:02 1738kN
53...Qb7-b5 54.Nf8-e6 Qb5xc5+ 55.Ne6xc5 Ng5-f7 56.Ke3-d4 Nf7-d6 57.Kd4-c3 Kg8-f7 58.Kc3-b4 h6-h5 59.Bb2-c3 Kf7-e7 60.Nc5xa4 Be8xa4 61.Kb4xa4
² (0.64) Depth: 14 00:00:05 3492kN
53...a4-a3 54.Qc5xa3 Qb7-b6+ 55.Bb2-d4 b3-b2 56.Nf8-g6 Be8xg6 57.Qa3-a8+ Kg8-h7 58.Bd4xb6 b2-b1Q 59.f5xg6+ Kh7xg6 60.Qa8-e8+ Kg6-h7 61.Bb6-d8 Qb1-b3+ 62.Ke3-d4 Qb3-b4+ 63.Kd4-d3 Qb4-b3+ 64.Kd3-d4
= (0.00) Depth: 14 00:00:05 4101kN
53...a4-a3 54.Qc5xa3 Qb7-b6+ 55.Bb2-d4 b3-b2 56.Nf8-g6 Be8xg6 57.Qa3-a8+ Kg8-h7 58.Bd4xb6 b2-b1Q 59.f5xg6+ Kh7xg6 60.Qa8-e8+ Kg6-h7 61.Bb6-d8 Qb1-b3+ 62.Ke3-d4 Qb3-b4+ 63.Kd4-d3 Qb4-b3+ 64.Kd3-d4
= (0.00) Depth: 15 00:00:07 5662kN
53...a4-a3 54.Qc5xa3 Qb7-b6+ 55.Bb2-d4 b3-b2 56.Qa3xb2 Qb6xb2 57.Bd4xb2 Kg8xf8 58.Bb2-a3+ Kf8-g8 59.h2-h4 Ng5-f7 60.Ke3-d4 h6-h5 61.Ba3-b4 Be8-a4 62.Bb4-c3 Ba4-b5 63.Bc3-a5 Kg8-f8 64.Kd4-c5 Bb5-d3
= (-0.24) Depth: 16 00:00:18 15427kN
53...a4-a3 54.Qc5xa3 Qb7-b6+ 55.Bb2-d4 b3-b2 56.Nf8-g6 Be8xg6 57.Qa3-a8+ Kg8-h7 58.Bd4xb6 b2-b1Q 59.f5xg6+ Kh7xg6 60.Qa8-e8+ Kg6-h7 61.Bb6-a5 Qb1-a2 62.Ba5-c3 Qa2-c2 63.Qe8-c6 Qc2xe4+ 64.Ke3-d2 Ng5-f3+ 65.Kd2-c1 Nf3xh2 66.Qc6-c5 Kh7-g6 67.d5-d6 Qe4-d3 68.Kc1-b2 Nh2-f3 69.Qc5-c7
³ (-0.32) Depth: 17 00:00:27 20577kN
53...a4-a3 54.Qc5xa3 Qb7-b6+ 55.Bb2-d4 b3-b2 56.Nf8-g6 Be8xg6 57.Qa3-a8+ Kg8-h7 58.Bd4xb6 b2-b1Q 59.f5xg6+ Kh7xg6 60.Qa8-e8+ Kg6-h7 61.Bb6-a5 Qb1-a2 62.Ba5-c3 Qa2-c2 63.Qe8-c6 Qc2xe4+ 64.Ke3-d2 Ng5-f3+ 65.Kd2-c1 Nf3xh2 66.Qc6-c5 Qe4-f5 67.Qc5-c7 Kh7-g6 68.d5-d6 Qf5-g5+ 69.Kc1-c2
³ (-0.36) Depth: 18 00:00:49 36171kN
(so k, 29.12.2009)