Author: Paul
Date: 06:15:46 01/27/01
Go up one level in this thread
On January 27, 2001 at 06:28:25, Heiner Marxen wrote: >On January 26, 2001 at 13:14:27, Paul wrote: > >>On January 26, 2001 at 06:55:42, José Antônio Fabiano Mendes wrote: >>> Werner Speckmann,1955 Mate in 13 >>> [D]8/8/4p3/2p5/p3Q3/K7/2r5/1k6 w >> >>01:15 WM13 1. Qh1+ Rc1 2. Qh7+ Rc2 3. Qe4 e5 4. Qe1+ Rc1 5. Qd2 Rc2 6. Qd1+ Rc1 >>7. Qd3+ Rc2 8. Qe4 c4 9. Qe1+ Rc1 10. Qd2 Rc2 11. Qb4+ Ka1 12. Qe1+ Rc1 13. >>Qxc1x >> >>Is this one oké, José? These solutions (correct or not) sure are nice! >> >>Groetjes, >>Paul > >Hi Paul, > >Chest confirms the above PV in 21.5 min (K7/600, 350 MB hash). >Currently it is chewing the other twin. I expect it to need 8 hours for >the complete mate in 17. Aren't transposition tables great? >The effective branching factor is reduced to below 2. > >Heiner Hi! Yeah, TT's are marvellous! Just wish I had 350MB like you! No, I'm not envious ... well, maybe just a little :) Must see if I can plug in some more memory. A better way would be to improve my algorithms of course ... yours sure seem to be working ok! I just stopped Pretz after it had been thinking for 17 hours on the Mate in 20 follow up from José Antônio, had quite a sleepless night coz of the noise right next to my bed. But when someone asks so nicely, well ... it's hard to refuse the challenge :) It was stuck at ply 17, after a massive bf explosion (96MB hash) : 10 00:00:10 11 00:00:18 12 00:00:49 13 00:02:03 14 00:03:48 15 00:08:52 16 00:21:18 17 16:59:56 Think I'll stop for the moment trying to solve these difficult ones, have to find my bug(s) first; can't debug/compile/link when Pretz is thinking. But why are these d@#$rned little critters sooo hard to find, sigh ... ;) Groetjes, Paul
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