Author: James Swafford
Date: 11:14:58 07/10/99
Go up one level in this thread
On July 09, 1999 at 16:13:37, Robert Hyatt wrote: >I was doing some testing today, and happened to pick wac230 as one of several >test cases to do some profiling with. I was quite surprised to get the >following on my quad xeon: > > 15-> 25.00 1.76 1. ... Rh7 2. Rb1 a4 3. Ba3 Bb7 4. > Kf4 Kd7 5. f3 Bc6 6. Rb2 Rh1 7. Bd6 > Rc1 8. Bb4 Rh1 <HT> > 16 37.14 1.77 1. ... Rh7 2. Rb1 a4 3. Bc5 Rh5 4. > Kg4 Ba6 5. Bd6 Bb7 6. Ra1 Kb5 7. Rb1 > Rh2 8. Kg3 Rh5 <HT> > 16 0:59 ++ 1. ... Rb4!! > (2) 16-> 1:28 2.15 1. ... Rb4 > 17 2:08 1.94 1. ... Rb4 2. cxb4 a4 3. b5+ Kxb5 4. > Rb1 c3 5. Ba3 Kc4 6. Rh1 Bd7 7. Rd1 > c2 8. Rd2 Kc3 9. Bc1 a3 10. Rxc2+ bxc2 > 11. Bxa3 Kxd4 > 17-> 2:11 1.94 1. ... Rb4 2. cxb4 a4 3. b5+ Kxb5 4. > Rb1 c3 5. Ba3 Kc4 6. Rh1 Bd7 7. Rd1 > c2 8. Rd2 Kc3 9. Bc1 a3 10. Rxc2+ bxc2 > 11. Bxa3 Kxd4 > 18 3:29 ++ 1. ... Rb4!! > 18 6:47 2.88 1. ... Rb4 2. cxb4 a4 3. b5+ Kxb5 4. > Rb1 c3 5. Ba3 Kc4 6. Kg4 Kxd4 7. Rc1 > Kd3 8. Rd1+ Kc2 9. Rc1+ Kd2 10. Rh1 > Ke2 <HT> > 18-> 6:54 2.88 1. ... Rb4 2. cxb4 a4 3. b5+ Kxb5 4. > Rb1 c3 5. Ba3 Kc4 6. Kg4 Kxd4 7. Rc1 > Kd3 8. Rd1+ Kc2 9. Rc1+ Kd2 10. Rh1 > Ke2 <HT> > > > >This is the first time Crafty has found this position... and as a result, it >can now find all 300 within 60 seconds, for the first time (it has been 'stuck' >on 299 for a year). > >I remembered Jouni asking about this position a while back. now the answer is >'yes' someone can get this one. Cray Blitz got it very quickly, but because of >some eval differences + singular extensions. It is now just within Crafty's >grasp (although there is no guarantee it won't become impossible again as I >make other changes..:) ) > >Bob Amazing. Great work Dr. Hyatt. I find it particularly interesting that you don't regularly test with suites, but use the servers as your "measuring stick." -- James
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