Author: John Merlino
Date: 11:38:34 11/29/02
Go up one level in this thread
On November 29, 2002 at 14:32:38, Dieter Buerssner wrote:
>On November 29, 2002 at 12:53:05, John Merlino wrote:
>
>>8/2q1p1k1/3pP1p1/2pPNpNp/2P2B2/1p1B2K1/1P1R4/r7 w - - 0 42
>>
>>CM9000, on a humble P3-733, finds 42.Nxg6! in 21 seconds. How do other engines
>>fare?
>>
>>Time Depth Score Positions Moves
>>0:13 2/10 1.56 1265670 5.Nc6 Rg1+ 6.Kh2 Ra1 7.Nh3 Ra8
>> 8.Bg5 Re8 9.Rg2 Kh7 10.Bh4
>>0:21 2/10 2.60 2017137 5.Nxg6 Rg1+ 6.Kh2 Rg4 7.Bxf5 Rxf4
>> 8.Nxf4 Kf6 9.Rg2 Kxf5 10.Nxh5 Kg6
>> 11.Nf4+ Kf5
>>0:36 3/11 2.64 3474651 5.Nxg6 Rg1+ 6.Kh2 Rg4 7.Bxf5 Rxf4
>> 8.Nxf4 Kf6 9.Rg2 Kxf5 10.Nxh5 Kg6
>> 11.Nf4+ Kf5 12.Ne2
>>1:16 4/12 2.64 6861024 5.Nxg6 Rg1+ 6.Kh2 Rg4 7.Bxf5 Rxf4
>> 8.Nxf4 Kf6 9.Rg2 Kxf5 10.Nxh5 Kg6
>> 11.Nf4+ Kf5 12.Ne2
>>4:40 5/13 2.73 26598305 5.Nxg6 Rg1+ 6.Kh2 Rg4 7.Rf2 Kxg6
>> 8.Bxf5+ Kg7 9.Bxg4 hxg4 10.Rg2
>> Qa5 11.Rxg4 Qa1 12.Ne4+ Kh7 13.Rh4+
>> Kg8
>
>In the other positions in this thread, Yace results are comparable with results
>posted from other engines. Here Yace likes Nxg6 for a little while, and then
>switches to Ngf3 with rather good looking score (P4, 2.53 GHz):
>
> 20713957 33.376 2.23 11. 42.Ngf7 Kh7 43.Nxg6 Rg1+ 44.Kh2 Rxg6 45.Bxf5
> Kg7 46.Bxg6 Kxg6 47.Rf2 Kg7 48.Rf3 Qb7 {109}
> 61827839 1:44.1 2.43 12t 42.Ngf7 Qa5 43.Bh6+ Kh7 44.Nxg6 Rg1+ 45.Kh2 Qa1
> 46.Nf4 Rh1+ 47.Kg3 Qe1+ 48.Rf2 Qe3+ 49.Kg2 Rh2+
> 50.Kxh2 Qxf2+ 51.Kh1 Qf3+ 52.Kg1 Qg3+ 53.Kf1H
> {219}
> 72035942 2:00.6 2.44 12t+ 42.Nxg6 Kxg6 43.Kh2 Rc1 44.Rg2 Rc2 45.Bxc2 Kf6
> 73949513 2:03.9 2.63 12++ 42.Nxg6 Kxg6 43.Kh2 Rc1 44.Rg2 Rc2 45.Bxc2 Kf6
> 81876357 2:16.9 2.94 12t 42.Nxg6 Rg1+ 43.Kh2 Rg4 44.Rf2 Kxg6 45.Bxf5+
> Kg7 46.Bxg4 hxg4 47.Rg2 Kf8 48.Kg3 Ke8 49.Kxg4
> {189}
> 91609833 2:33.2 2.94 12. 42.Nxg6 Rg1+ 43.Kh2 Rg4 44.Rf2 Kxg6 45.Bxf5+
> Kg7 46.Bxg4 hxg4 47.Rg2 Kf8 48.Kg3 Ke8 49.Kxg4
> {189}
> 102387080 2:50.4 2.90 13t 42.Nxg6 Rg1+ 43.Kh2 Rg4 44.Rf2 Kxg6 45.Bxf5+
> Kg7 46.Bxg4 hxg4 47.Rg2 Kf8 48.Kg3 Ke8 49.Kxg4
> Kd8 {189}
> 124082285 3:25.1 2.90 13. 42.Nxg6 Rg1+ 43.Kh2 Rg4 44.Rf2 Kxg6 45.Bxf5+
> Kg7 46.Bxg4 hxg4 47.Rg2 Kf8 48.Kg3 Ke8 49.Kxg4
> Kd8 {189}
> 163363411 4:30.8 3.24 14t 42.Nxg6 Rg1+ 43.Kh2 Rg4 44.Rf2 Kxg6 45.Bxf5+
> Kg7 46.Bxg4 hxg4 47.Kg3 Qc8 48.Bd2 Qa6 49.Rf4
> Qa2 50.Bc3+ Kh6 {HT} {109}
> 276872014 7:35.4 3.25 14t+ 42.Ngf3 h4+ 43.Kh2 h3 44.Nxg6 Kxg6 45.Nh4+ Kg7
> 46.Nxf5+ Kg8 47.Bg5 Qa5 48.Nxe7+ Kg7 49.Nf5+
> Kg8 50.e7 Re1 51.Be2 Kh7 52.e8=Q Qc7 {960}
> 310652420 8:32.4 3.30 14++ 42.Ngf3 h4+ 43.Kh2 h3 44.Nxg6 Kxg6 45.Nh4+ Kg7
> 46.Nxf5+ Kg8 47.Bg5 Qa5 48.Nxe7+ Kg7 49.Rf2
> Rh1+ 50.Kxh1 Qe1+ 51.Rf1 Qg3 52.Bf6+ Kh6 {539}
> 379304537 10:29.0 3.48 14t 42.Ngf3 Rg1+ 43.Kh2 Rg4 44.Nxg4 hxg4 45.Nh4 Kf6
> 46.Rf2 Kg7 47.Bd2 Kh7 48.Kg3 Qb7 49.Bg5 Kg7
> {HT} {299}
> 383321451 10:35.9 3.48 14. 42.Ngf3 Rg1+ 43.Kh2 Rg4 44.Nxg4 hxg4 45.Nh4 Kf6
> 46.Rf2 Kg7 47.Bd2 Kh7 48.Kg3 Qb7 49.Bg5 Kg7
> {HT} {299}
>
>Regards,
>Dieter
Nice results, although:
1) Yace doesn't switch to Ngf3 until after over 7 1/2 minutes on a very fast
machine, so it probably wouldn't play it in a game.
2) Yace doesn't spot Nxg6 until after 2 minutes on your hardware, compared to 21
seconds for CM on a machine about 1/3 the speed.
3) The difference between Nxg6 and Ngf3 is ultimely only 0.24 for Yace, which
isn't that significant....
Otherwise, as always, YACE is very impressive.
jm
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