old test position

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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

old test position

Post by kgburcham »

14...Nxg2

[D] r1b2rk1/1pp2ppp/2n2q2/p1b1p3/2N1Pn2/1BP1BN1P/PPQ2PPK/R4R2 b - - 0 14
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Spock

Re: old test position

Post by Spock »

No problem for Rybka 3 MP x64

8.00 0:01 -0.20 1...Qh6 2.Rad1 Bg4 (207.256) 137
9.00 0:02 -0.20 1...Qh6 2.a4 Re8 3.Ng1 Ba7 4.Ne2 Be6 5.Bxa7 (402.341) 138
10.00 0:03 -0.17 1...Qh6 2.a4 Re8 3.Ng1 Ba7 4.Ne2 Be6 5.Bxa7 Rxa7 6.Nxf4 exf4 7.Qe2 (506.238) 140
11.00 0:04 -0.16 1...Qh6 2.Ng1 b6 3.Bxc5 bxc5 4.Ne3 Ba6 5.Rfd1 Rad8 (661.653) 139
12.01 0:07 -0.09 1...Qh6 2.Ng1 Bxe3 3.Nxe3 Ne7 4.Ne2 a4 5.Bc4 Neg6 6.Nxf4 Nxf4 7.Kh1 (985.892) 133
12.03 0:10 -0.11 1...Be7 2.Ncd2 Rd8 3.Bxf4 Qxf4+ 4.Kh1 Bd7 5.a4 Bc5 6.Bd5 Rab8 (1.395.860) 132
13.01 0:12 -0.10 1...Be7 2.Ncd2 Rd8 3.Bxf4 exf4 4.Rfd1 Qg6 5.Kh1 h6 6.Rac1 Bf6 (1.560.959) 131
14.01 0:16 -0.09 1...Be7 2.Ncd2 Rd8 3.Bxf4 exf4 4.Rfd1 Qg6 5.Kh1 h6 6.Rac1 Bf6 7.Nc4 (2.144.291) 130
15.01 0:34 -0.09 1...Be7 2.Ncd2 Rd8 3.Bxf4 exf4 4.Rfd1 Qg6 5.Nc4 Be6 6.Ncd2 Bd7 7.Nc4 Bf6 (4.172.301) 125
15.07 1:27 -0.29++ 1...Nxg2 (9.151.499) 107
15.01 1:33 -0.49++ 1...Nxg2 (9.820.544) 107
15.01 2:15 -0.89++ 1...Nxg2 (15.445.369) 116
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Spock

Re: old test position

Post by Spock »

Not so easy for Deep Shredder 11 - this after one and a half hours

11/29 0:00 -0.27 1...Be7 2.Ba4 Be6 3.Ncd2 Rab8 4.Bxc6 bxc6 5.Kg1 Rfd8 6.b3 Ba3 7.Rfd1 Ne2+ (1.898.113) 2534
12/29 0:02 -0.22 1...Be7 2.Ba4 Be6 3.Ncd2 Rab8 4.Bb5 Rfd8 5.Rad1 h6 (6.497.474) 2722
13/31 0:04 -0.25 1...Be7 2.Ba4 Be6 3.Ncd2 Rfb8 4.Bxc6 bxc6 5.Rfd1 a4 6.b3 Rd8 7.bxa4 c5 8.Kg1 Bd7 9.Bxf4 (13.091.700) 2787
14/36 0:12 -0.32 1...Be7 2.Ba4 Be6 3.Ncd2 Nb8 4.Bb3 Bd7 5.a4 Nc6 6.Rg1 Rfd8 7.Rad1 Bc8 8.Kh1 b6 9.Bc4 Ba6 (34.118.380) 2667
15/40 0:19 -0.21 1...Be7 2.Ba4 Be6 3.Ncd2 Nb8 4.Bb3 Bd7 5.a4 Nc6 6.Rfd1 h6 7.Nf1 Bd6 8.Bxf4 exf4 9.Kg1 Rfd8 10.N1h2 Ne5 (52.727.077) 2712
16/42 0:36 -0.27 1...Be7 2.Ba4 Nxh3 3.Bxc6 Qxc6 4.Ncxe5 Qe6 5.Qb3 Qf6 6.gxh3 Bd6 7.Kg2 Bxe5 8.Nxe5 Qxe5 9.Qd5 Qxd5 10.exd5 Bf5 11.Rad1 Rfe8 (100.474.345) 2779
17/45 0:49 -0.24 1...Be7 2.Ba4 Nxh3 3.Bxc6 Qxc6 4.Ncxe5 Qe6 5.Qb3 Qf6 6.gxh3 Bd6 7.Kg2 Bxe5 8.Nxe5 Qxe5 9.Qd5 Qxd5 10.exd5 Bf5 11.Rad1 Rfe8 12.Bf4 Rac8 13.Rfe1 Be4+ (141.856.127) 2848
18/48 1:31 -0.32 1...Be7 2.Ba4 Nxh3 3.Bxc6 Qxc6 4.Ncxe5 Qe6 5.Qb3 Qf6 6.gxh3 Bd6 7.Kg2 Bxe5 8.Nxe5 Qxe5 9.Qd5 Qxd5 10.exd5 Bf5 11.Rad1 Ra6 (271.531.143) 2969 SB:1
19/54 12:57 -0.14 1...Be7 2.Ncd2 Qg6 3.Bxf4 exf4 4.a4 Rd8 5.Rad1 Bc5 6.Nc4 Be6 7.Nce5 Nxe5 8.Nxe5 Qf6 9.Nf3 Rxd1 10.Qxd1 Rd8 11.Bxe6 (2.321.927.766) 2986 SB:2
19/54 18:25 -0.37 1...Ba7 2.Ba4 Be6 3.Ncd2 Rfd8 4.Bxc6 bxc6 5.Rad1 a4 6.Bxf4 Qxf4+ 7.Kh1 Bxa2 8.Qxa4 Bxf2 9.Qxc6 Bb6 10.b3 Qg3 (3.324.648.927) 3006 SB:3
20/57 31:31 -0.36 1...Ba7 2.Ncd2 Rd8 3.Kh1 Bxe3 4.fxe3 Nh5 5.Rfd1 Qe7 6.Bd5 Nb8 7.Nf1 Nd7 8.Bc4 a4 9.g4 Nhf6 10.g5 Nh5 11.Qd2 a3 12.b4 Rf8 13.Qg2 (5.733.555.146) 3031 SB:22
21/50 40:27 -0.33 1...Ba7 2.Ncd2 Rd8 3.Kh1 Bxe3 4.fxe3 Nh5 5.Rfd1 Qe7 6.Bd5 Nb8 7.Nf1 Nd7 8.Bc4 a4 9.g4 Nhf6 10.Ng3 h6 11.Qd3 Qc5 (7.353.305.984) 3029 SB:31
22/58 57:40 -0.37 1...Ba7 2.Ncd2 Rd8 3.Kh1 Bxe3 4.fxe3 Nh5 5.Rfd1 Qe7 6.Bd5 Nb8 7.Nf1 Nd7 8.Bc4 a4 9.g4 Nhf6 10.Ng3 h6 11.Qd3 Ne8 12.Nf5 Qf6 13.Kg2 (10.563.968.176) 3052 SB:84
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Will Singleton
Posts: 128
Joined: Thu Mar 09, 2006 5:14 pm
Location: Los Angeles, CA

Re: old test position

Post by Will Singleton »

Ok, I'll bite. What's the continuation after Nxg2 that avoids the draw?
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ernst
Posts: 352
Joined: Thu Mar 09, 2006 6:00 pm

Re: old test position

Post by ernst »

Spock wrote:No problem for Rybka 3 MP x64

8.00 0:01 -0.20 1...Qh6 2.Rad1 Bg4 (207.256) 137
9.00 0:02 -0.20 1...Qh6 2.a4 Re8 3.Ng1 Ba7 4.Ne2 Be6 5.Bxa7 (402.341) 138
10.00 0:03 -0.17 1...Qh6 2.a4 Re8 3.Ng1 Ba7 4.Ne2 Be6 5.Bxa7 Rxa7 6.Nxf4 exf4 7.Qe2 (506.238) 140
11.00 0:04 -0.16 1...Qh6 2.Ng1 b6 3.Bxc5 bxc5 4.Ne3 Ba6 5.Rfd1 Rad8 (661.653) 139
12.01 0:07 -0.09 1...Qh6 2.Ng1 Bxe3 3.Nxe3 Ne7 4.Ne2 a4 5.Bc4 Neg6 6.Nxf4 Nxf4 7.Kh1 (985.892) 133
12.03 0:10 -0.11 1...Be7 2.Ncd2 Rd8 3.Bxf4 Qxf4+ 4.Kh1 Bd7 5.a4 Bc5 6.Bd5 Rab8 (1.395.860) 132
13.01 0:12 -0.10 1...Be7 2.Ncd2 Rd8 3.Bxf4 exf4 4.Rfd1 Qg6 5.Kh1 h6 6.Rac1 Bf6 (1.560.959) 131
14.01 0:16 -0.09 1...Be7 2.Ncd2 Rd8 3.Bxf4 exf4 4.Rfd1 Qg6 5.Kh1 h6 6.Rac1 Bf6 7.Nc4 (2.144.291) 130
15.01 0:34 -0.09 1...Be7 2.Ncd2 Rd8 3.Bxf4 exf4 4.Rfd1 Qg6 5.Nc4 Be6 6.Ncd2 Bd7 7.Nc4 Bf6 (4.172.301) 125
15.07 1:27 -0.29++ 1...Nxg2 (9.151.499) 107
15.01 1:33 -0.49++ 1...Nxg2 (9.820.544) 107
15.01 2:15 -0.89++ 1...Nxg2 (15.445.369) 116
Are you sure that this was with clean hash? With me, R3 needs 18 ply with 256MB hash.


Analysis by Rybka 3:

14...Be7 15.Rad1 Be6
= (-0.11) Depth: 6 00:00:00 10kN
14...Be7 15.Rad1 b5 16.Na3
= (-0.09) Depth: 7 00:00:00 20kN
14...Be7 15.Ba4 Be6 16.b3 Rad8
= (0.02) Depth: 8 00:00:00 48kN
14...Qh6
= (-0.13) Depth: 8 00:00:00 228kN
14...Qh6 15.a4 Re8 16.Ne1 Bxe3 17.fxe3 Ne6
= (-0.18) Depth: 9 00:00:01 270kN
14...Qh6 15.a4 Re8 16.Ne1 Bxe3 17.fxe3 Ne6 18.Rd1 Ng5
= (-0.24) Depth: 10 00:00:01 435kN
14...Qh6 15.a4 Re8 16.Ne1 Bxe3 17.fxe3 Ne6 18.Rd1 Ng5 19.Nd2
= (-0.19) Depth: 11 00:00:03 882kN
14...Qh6 15.a4 Be6 16.Ng1 b6 17.Bxc5 bxc5 18.Ne3 Bxb3 19.Qxb3 Rfd8 20.Qc2
= (-0.19) Depth: 12 00:00:06 1560kN
14...Qh6 15.Ng1 Ba7 16.Bxa7 Nxa7 17.a4 Nc6 18.Ne3 Ne7 19.Kh1 Ra6
= (-0.10) Depth: 13 00:00:14 3489kN
14...Qh6 15.Ng1 Ba7 16.Bxa7 Nxa7 17.a4 Nc6 18.Ne3 Ne7 19.Bc4 g5 20.Kh1 g4 21.Rad1
= (-0.06) Depth: 14 00:00:23 5487kN
14...Ba7 15.Ba4 Re8 16.Ncd2 Be6 17.Rad1 Red8 18.Bb3 h6 19.Bxf4 Qxf4+ 20.Kh1 Bc8
= (-0.07) Depth: 14 00:00:39 9496kN
14...Ba7 15.Ba4 Re8 16.Ncd2 Be6 17.Rad1 Red8 18.Bb3 h6 19.Bxf4 Qxf4+ 20.Kh1 Bc8
= (-0.07) Depth: 15 00:00:46 11268kN
14...Ba7 15.Ncd2 g5 16.Rae1 Rd8 17.Bd5 Ne7 18.Bb3 Neg6 19.Bxa7 Rxa7 20.Rd1 h5 21.Nc4
= (-0.21) Depth: 16 00:02:30 36686kN
14...Ba7 15.Ncd2 g5 16.Rae1 Rd8 17.Bxa7 Rxa7 18.Re3 a4 19.Bc4 h5 20.Nxg5 Qxg5 21.Rg3 Bg4 22.Rd1 Kh7 23.Nf3 Qe7 24.hxg4 Rxd1 25.Qxd1 h4
= (-0.16) Depth: 17 00:04:33 66289kN
14...Ba7 15.Ncd2 g5 16.Rae1 Rd8 17.Bxa7 Rxa7 18.Re3 a4 19.Bc4 h5 20.Nxg5 Qxg5 21.Rg3 Bg4 22.Rd1 Kh7 23.Nf3 Qe7 24.hxg4 Rxd1 25.Qxd1 h4
= (-0.16) Depth: 18 00:05:32 81120kN
14...Nxg2
=/+ (-0.36 !) Depth: 18 00:06:56 104mN
14...Nxg2
=/+ (-0.56 !) Depth: 18 00:07:41 120mN

(, 07.07.2009)
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Spock

Re: old test position

Post by Spock »

Yes, a clean hash, and I think I had 1024MB of hash set
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Will Singleton
Posts: 128
Joined: Thu Mar 09, 2006 5:14 pm
Location: Los Angeles, CA

Re: old test position

Post by Will Singleton »

What the heck is the continuation? No program I have shows anything but a draw.
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gladius
Posts: 568
Joined: Tue Dec 12, 2006 10:10 am
Full name: Gary Linscott

Re: old test position

Post by gladius »

Rybka 2.2n MP shows:

(-0.47) Depth=23
1. .. Nxg2
2. Kxg2 Bxh3+
3. Kxh3 Qxf3+
4. Kh2 Ra6
5. Qd1 Qxe4
6. Qh5 Bxe3
7. fxe3 Nd8
8. Qf3 Rh6+
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Kurt Utzinger
Posts: 169
Joined: Sun May 11, 2008 10:31 pm
Location: Switzerland

Re: old test position

Post by Kurt Utzinger »

Will Singleton wrote:Ok, I'll bite. What's the continuation after Nxg2 that avoids the draw?
To accept the sacrifice with a draw is the only way for White, otherwise Black would win the game.
Kurt
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beachknight
Posts: 3533
Joined: Tue Jan 09, 2007 8:33 pm
Location: Antalya, Turkey

Re: old test position

Post by beachknight »

Will Singleton wrote:What's the continuation after Nxg2 that avoids the draw?
After Nxg2, Kxg2 leads to draw.

1568:

Analysis by Deep Fritz 11:

15.Kxg2 Bxh3+ 16.Kxh3 Qxf3+ 17.Kh2 Qh5+ 18.Kg1 Qg4+ 19.Kh2
= (0.00) Depth: 18 00:00:00 15kN
15.Kxg2 Bxh3+ 16.Kxh3 Qxf3+ 17.Kh2 Qh5+ 18.Kg1 Qg4+ 19.Kh2
= (0.00) Depth: 19 00:00:00 16kN
15.Kxg2 Bxh3+ 16.Kxh3 Qxf3+ 17.Kh2 Qh5+ 18.Kg1 Qg4+ 19.Kh2 Qh5+
= (0.00) Depth: 20/38 00:00:03 27905kN
15.Kxg2 Bxh3+ 16.Kxh3 Qxf3+ 17.Kh2 Qh5+ 18.Kg1 Qg4+ 19.Kh2 Qh5+
= (0.00) Depth: 21/46 00:00:25 198mN

(, chessengines20 19.07.2009)
hi, merhaba, hallo HT
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