test position from SCCT

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jdart
Posts: 4367
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

test position from SCCT

Post by jdart »

This was played in an offline tournament run by Sedat Canbaz, Deep Fritz 10 vs. Zap!Chess Paderborn:

[D] 2q1r3/R1b3pk/2N2p1p/1P3b2/8/4p2P/4Q1P1/3R3K b - -

Zap!Chess played Bxh3, which is the best move here.

Arasan can find this after a *long* time. I think it is not easy, but was within reach for Zap!Chess on a quad machine at long time control.

--Jon
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Will Singleton
Posts: 128
Joined: Thu Mar 09, 2006 5:14 pm
Location: Los Angeles, CA

Re: test position from SCCT

Post by Will Singleton »

Interesting position, but some weaker engines can find Bxh3 due to eval terms. Amateur, for example, never considers anything else. Glaurung also finds it quickly.

Will
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jdart
Posts: 4367
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: test position from SCCT

Post by jdart »

Do you get a + score for Black?

Fritz played Rc1 in reply and lost quickly. Rxc7 is a much better try but Black is still ahead after that.

--Jon
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PauloSoare
Posts: 1335
Joined: Thu Mar 09, 2006 5:30 am
Location: Cabo Frio, Brasil

Re: test position from SCCT

Post by PauloSoare »

jdart wrote:This was played in an offline tournament run by Sedat Canbaz, Deep Fritz 10 vs. Zap!Chess Paderborn:

[D] 2q1r3/R1b3pk/2N2p1p/1P3b2/8/4p2P/4Q1P1/3R3K b - -

Zap!Chess played Bxh3, which is the best move here.

Arasan can find this after a *long* time. I think it is not easy, but was within reach for Zap!Chess on a quad machine at long time control.

--Jon
Deep Shredder 10 64, Athlon 2 cores 3800+, HT=1Gb

And the evaluation drop :D

10/31 0:01 +0.06 1...Bxh3 2.Rxc7 (927.196) 667 SB:2
11/29 0:01 +0.27 1...Bxh3 2.Rxc7 Qxc7 3.gxh3 Qg3 4.Rb1 Qxh3+ 5.Kg1 Qg3+ 6.Qg2 Qd6 7.Re1 g6 8.Qh2 Qc5 (1.270.870) 720 SB:4
11/29 0:01 +0.26++ 1...Be4 (1.320.713) 728 SB:4
11/29 0:02 -0.08 1...Be4 2.Kg1 Kh8 3.Nd4 (1.866.171) 775 SB:4
12/34 0:03 -0.02 1...Be4 2.Kg1 Kh8 3.Qxe3 Bxc6 4.Rxc7 Qxc7 5.Qc5 Qa5 6.Qxc6 Re1+ 7.Rxe1 Qxe1+ 8.Kh2 (2.985.334) 834 SB:5
13/36 0:06 -0.02 1...Be4 2.Kg1 Kh8 3.Qxe3 Bxc6 4.Rxc7 Qxc7 5.Qc5 Qa5 6.Qxc6 Re1+ 7.Rxe1 Qxe1+ 8.Kh2 Qe5+ 9.g3 Qe2+ 10.Kg1 Qe1+ 11.Kh2 Qe2+ 12.Kg1 Qe1+ 13.Kh2 Qe2+ (5.561.111) 881 SB:16
13/41 0:10 -0.03++ 1...Bxh3 (9.786.113) 906 SB:337
13/41 0:13 -0.38++ 1...Bxh3 (12.042.339) 925 SB:512
13/41 0:25 -0.49 1...Bxh3 2.Rxc7 Qxc7 3.gxh3 Qg3 4.Rd4 Qxh3+ 5.Kg1 Qg3+ 6.Kf1 f5 7.Rb4 f4 8.Nd4 Qh3+ 9.Kg1 g6 10.b6 Qg3+ 11.Kf1 (24.373.018) 961 SB:2.423
14/40 0:34 -0.74++ 1...Bxh3 2.Rxc7 (32.294.940) 949 SB:2.662
14/41 0:51 -1.23 1...Bxh3 2.Ra4 Bf5 (49.354.912) 950 SB:3.161
15/44 1:10 -1.23 1...Bxh3 2.Ra4 Bf5 3.Nd4 Be4 4.Kg1 Qb8 5.Ra3 Bh2+ 6.Kh1 Bf4 7.Qg4 (66.673.461) 942 SB:5.165
16/42 1:47 -1.12 1...Bxh3 2.Rf1 Bg4 3.Qc2+ Kh8 4.Qg6 Bd7 5.Nd4 Qb8 6.b6 e2 7.Nxe2 Qxb6 8.Ra2 Qe3 9.Qf7 Qd3 10.Kg1 (100.642.063) 936 SB:7.205
17/43 2:14 -0.87-- 1...Bxh3 2.Rf1 (126.766.941) 940 SB:7.715
17/45 3:07 -0.87 1...Bxh3 2.Rf1 (175.104.563) 934 SB:14.041
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Chris Taylor

Re: test position from SCCT

Post by Chris Taylor »

[quote="jdart"]This was played in an offline tournament run by Sedat Canbaz, Deep Fritz 10 vs. Zap!Chess Paderborn:

[D] 2q1r3/R1b3pk/2N2p1p/1P3b2/8/4p2P/4Q1P1/3R3K b - -

Zap!Chess played Bxh3, which is the best move here.

Arasan can find this after a *long* time. I think it is not easy, but was within reach for Zap!Chess on a quad machine at long time control.

--Jon[/quote]
Hi

Here is Zap Chess Zanzibar on an AMD dual running 64 bit..

New game
2q1r3/R1b3pk/2N2p1p/1P3b2/8/4p2P/4Q1P1/3R3K b - - 0 1

Analysis by Zap!Chess Zanzibar x64:

1...Bb6 2.Ra6 Qb7 3.Rf1 Be6 4.Rc1 Qc7 5.Rca1 Qb7 6.R1a4 Bf7 7.Rg4 Kg8 8.Qd3 e2
= (0.10) 00:00:01
= (0.10) Depth: 13/41 00:00:12 12667kN
1...Bxh3 2.Ra4 Bf5 3.Nd4 Be4 4.Kg1 Kh8 5.Rc4 Bd5 6.Rcc1 Qd7 7.Nf5 Bb6 8.g4 Kg8 9.Rc6
= (0.09) Depth: 13/44 00:00:17 17979kN
µ (-0.96) Depth: 16/52 00:04:46 326mN

(Taylor, Notts 17.05.2007)


Not the pad version, this one did okay!

Chris
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Chris Taylor

Re: test position from SCCT

Post by Chris Taylor »

[quote="jdart"]This was played in an offline tournament run by Sedat Canbaz, Deep Fritz 10 vs. Zap!Chess Paderborn:

[D] 2q1r3/R1b3pk/2N2p1p/1P3b2/8/4p2P/4Q1P1/3R3K b - -

Zap!Chess played Bxh3, which is the best move here.

Arasan can find this after a *long* time. I think it is not easy, but was within reach for Zap!Chess on a quad machine at long time control.

--Jon[/quote]

Hi

Here is Strelka 1.0 beta, and its conclusion..

New game
2q1r3/R1b3pk/2N2p1p/1P3b2/8/4p2P/4Q1P1/3R3K b - - 0 1

Analysis by Strelka 1.0 Beta:AMD 4800 64 bit OS


1...Bxh3 2.Re1 Bf5 3.Rc1 Bb6 4.Ra6 Re4 5.Rc4 Qc7 6.Qa2 Rxc4 7.Qxc4 h5 8.Ra8 Kg6 9.Rf8 Kg5
= (0.00) Depth: 10 00:00:01 1863kN
µ (-1.17) Depth: 16 00:04:01 320mN

(Taylor, Notts 18.05.2007)

Chris
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Will Singleton
Posts: 128
Joined: Thu Mar 09, 2006 5:14 pm
Location: Los Angeles, CA

Re: test position from SCCT

Post by Will Singleton »

jdart wrote:Do you get a + score for Black?

Fritz played Rc1 in reply and lost quickly. Rxc7 is a much better try but Black is still ahead after that.

--Jon
6 156 27 143922 Bxh3 Rxc7 Bxg2 Kxg2 Qxc7 Rd3 Qf4
7 148 51 273835 Bxh3 Rxc7 Bxg2 Kxg2 Qxc7 Rd3 Qb6
8 149 166 896694 Bxh3 Rc1 Bb6 Ra4 Bf5 Rc4 Qe6 Ra6
9 161 506 2772297 Bxh3 Nd4
10 146 1055 5731397 Bxh3 gxh3 Qxh3 Kg1 Bh2 Qxh2 Qg4 Qg2 Qxd1 Kh2 Qh5 Kg1 Qg6 Qxg6 Kxg6
11 151 2548 13950271 Bxh3 Rxc7 Bxg2 Kxg2 Qxc7 Qg4 Qf7 Rd7 Qg8 Qe2 f5
12 143 3415 18827790 Bxh3 Rxc7 Bxg2 Kxg2 Qxc7 Qg4 Qf7 Rd7 Qg8 Nd4 Qa2 Ne2 Qg8
13 78 5096 28185989 Bxh3 Rxc7 Bxg2 Kxg2 Qxc7 Qd3 Kg8
14 106 13766 75979365 Bxh3 Rxc7 Qxc7 gxh3 Qg3 Qd3 Kh8 Qd7 Qf3 Kg1 Re4 Rd4 e2
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