Author: Peter Rosendahl
Date: 10:59:17 03/17/02
Go up one level in this thread
>[D] r3k1r1/pR1b1p2/2n1pQpp/3pP3/8/2P2N2/P1PKB1qP/5R2 w q -
>
>Here Rxd7! is better than h4. Crafty finds this in under a minute,
>Pharaon in about 2 1/2 minutes. Arasan 5.4 takes over 4 minutes
>(Athlon 1.4 GHz).
>
>Arasan 6.0 (latest build) can't find it in 10 minutes - maybe
>some bug, I'm not sure.
>
I think big check extensions help a lot here. With the current
version of my engine it takes ~2 min. to find it (Athlon 900 MHz):
RESP> sb r3k1r1/pR1b1p2/2n1pQpp/3pP3/8/2P2N2/P1PKB1qP/5R2 w q -
Clearing Hash ... OK.
Clearing PHash ... OK.
Setting up FEN position ... OK.
RESP>
RESP> a
1 0.01 -7.05 1 1.Rh1 Qxh1 {->q}
1 0.01 -1.91 1 1.Rg1!!
1 0.01 -1.87 1 1.Rd1
1 0.01 -1.82 1 1.Rfb1
1 0.01 -1.78 6 1.Nd4
1 0.01 -1.51 6 1.Ke1
1. 0.01 -1.51 6 1.Ke1
2 0.01 -1.57 44 1.Ke1 a5
2. 0.02 -1.57 117 1.Ke1 a5
3 0.02 -1.48 357 1.Ke1 Rf8 2.a4
3. 0.03 -1.48 1110 1.Ke1 Rf8 2.a4
4 0.03 -1.54 2058 1.Ke1 Nd8 2.Rb4 Nc6
4. 0.05 -1.54 3831 1.Ke1 Nd8 2.Rb4 Nc6
5 0.06 -1.54 5625 1.Ke1 Nd8 2.Rb1 a5 3.a3
5+ 0.11 -1.09 11657 1.Nd4 Nd8 2.Rbb1 a5 3.a3
5. 0.19 -1.10 34179 1.Nd4 Nd8 2.Rbb1 a5 3.a3
6+ 0.20 -0.65 36090 1.Nd4
6 0.33 -0.61 88344 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8
6. 0.40 -0.61 98517 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8
7 0.47 -0.61 107524 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 {->tt}
7. 0.63 -0.61 133531 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 {->tt}
8 0.74 -0.80 148689 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 Rb8
8. 1.73 -0.80 309119 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 Rb8
9+ 2.15 -0.35 373448 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 Rb8 6.a4 {->tt}
9. 20.82 -0.36 8069918 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 Rb8 6.a4 {->tt}
10+ 24.59 0.09 8560434 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 Rb8
10. 91.96 0.08 31573913 1.Nd4 Nd8 2.Nc6 Qg5+ 3.Qxg5 hxg5 4.Nxd8 Rxd8
5.Rxa7 Rb8
11 95.05 0.26 31999352 1.Nd4 Qg5+ 2.Qxg5 hxg5 3.Nxc6 Bxc6 4.Rbxf7 a5
5.R7f6 Ke7 6.Rg1 {->tt}
11+ 111.56 0.53 34310177 1.Rxd7 Qg5+ 2.Qxg5 hxg5
11 125.84 2.38 36620372 1.Rxd7!! Kxd7 2.Qxf7+ Ne7 3.Nd4 Rac8 4.Qxe6+ Kd8
5.Rf7 Qg5+ 6.Kd3 Qh4 7.Rxe7 Qe4+ 8.Kd2 Qf4+ 9.Ke1
Qh4+
11. 127.66 2.38 36839257 1.Rxd7 Kxd7 2.Qxf7+ Ne7 3.Nd4 Rac8 4.Qxe6+ Kd8
5.Rf7 Qg5+ 6.Kd3 Qh4 7.Rxe7 Qe4+ 8.Kd2 Qf4+ 9.Ke1
Qh4+
12 135.32 2.33 37851199 1.Rxd7 Kxd7 2.Qxf7+ Ne7 3.Nd4 Rgf8 4.Qxe6+ Ke8
5.Rxf8+ Kxf8 6.Qf6+ Kg8 7.Qxe7 Qxh2 8.Qe6+ Kg7
9.Qf6+ Kh7 10.Qf7+ Kh8 11.Qxg6 Rb8 12.e6 {->tt}
12. 157.50 2.33 40584558 1.Rxd7 Kxd7 2.Qxf7+ Ne7 3.Nd4 Rgf8 4.Qxe6+ Ke8
5.Rxf8+ Kxf8 6.Qf6+ Kg8 7.Qxe7 Qxh2 8.Qe6+ Kg7
9.Qf6+ Kh7 10.Qf7+ Kh8 11.Qxg6 Rb8
13 209.80 2.34 48329479 1.Rxd7 Kxd7 2.Qxf7+ Ne7 3.Nd4 Rgf8 4.Qxe6+ Ke8
5.Rxf8+ Kxf8 6.Qf6+ Kg8 7.Qxe7 Qxh2 8.Qe6+ Kg7
9.Qxd5 Rb8 10.Ne6+ Kh7 11.Ke1
Peter
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