Author: Robert Hyatt
Date: 18:42:58 11/11/98
Go up one level in this thread
On November 11, 1998 at 15:23:08, Frederic Louguet wrote:
>>Crafty (modified), PII 300, hash 24M + 5M(hashp) plays the move in 2:04, finds
>>mate:
>>-----
>> 13 3:07 Mat14 1. Rxg7+ Rxg7 2. Rxg7+ Kxg7 3. Qe7+
>> Kg8 4. Qe8+ Kg7 5. h6+ Kxh6 6. Qf8+
>> Kh5 7. Qf7+ Kh4 8. Qxh7+ Kg3 9. Qg7+
>> Kh2 10. Kf2 Qc5+ 11. Kf1 Qxc4+ 12.
>> bxc4 Kh3 13. Qg2+ Kh4 14. Qh2#
>>-----
>>Unmodified Crafty plays it in 2:25 and finds mate in 5:35
>>
>>I'm a bit surprised that Fritz didn't find this in at least a matter of minutes,
>>based on all that I've heard about it. Anyone with Fritz confirm this?
>>
>>Jeremiah
>
>It does not seem to be a difficult position for a tactically skilled program. On
>a Pentium-II 375 Mhz, Chess Wizard plays Txg7! in exactly 48 seconds and
>announces mate in 14 in 1 minute 15 seconds with the following :
>
>1.Rxg7+ Rxg7 2.Rxg7+ Kxg7 3.Qe7+ Kg8 4.Qe8+ Kg7 5.h6+ Kxh6 6.Qf8+ Kh5 7.Qf7+ Kh4
>8.Qxh7+ Kg3 9.Qg7+ Kh2 10.Kf2 Qc5+ 11.Kf1 Qg1+ 12.Qxg1+ Kh3 13.Qg2+ Kh4 14.Qh2#
>( Mate14)
Here's what I get:
12 1:24 0.34 1. Rd1 Ra7 2. Rd3 Qxd6 3. Rxd6 h6 4.
Rg6 Rga8 5. Kd4 Rc7 6. Rg3 Rd8 7. Rg6
12 1:26 ++ 1. Rxg7+!!
12 1:35 Mat15 1. Rxg7+ Rxg7 2. Rxg7+ Kxg7 3. Qe7+
Kg8 4. Qe8+ Kg7 5. h6+ Kxh6 6. Qf8+
Kh5 7. Qf7+ Kh4 8. Qxh7+ Kg3 9. Qg8+
Kh4 10. Kf2 <HT>
12-> 1:41 Mat15 1. Rxg7+ Rxg7 2. Rxg7+ Kxg7 3. Qe7+
Kg8 4. Qe8+ Kg7 5. h6+ Kxh6 6. Qf8+
Kh5 7. Qf7+ Kh4 8. Qxh7+ Kg3 9. Qg8+
Kh4 10. Kf2 <HT>
time=1:41 cpu=393% mat=0 n=34143185 fh=93% nps=336386
ext-> checks=1893588 recaps=192827 pawns=157436 1rep=563820
predicted=0 nodes=34143185 evals=9064665
endgame tablebase-> probes done=0 successful=0
SMP-> split=18846 stop=2233 data=18/64 cpu=6:38 elap=1:41
mate in 15 moves.
White(1): Rxg7+
time used: 1:41
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