Author: Benny Antonsson
Date: 04:04:21 11/22/01
Go up one level in this thread
On November 21, 2001 at 13:14:48, Peter Berger wrote: >[D]r1br4/1pq2p1p/p3pnkB/8/8/1BP2Q2/PP3PPb/R3R2K b - - 0 18 am Nd5 bm Nh5 ;id >"Adams-Dreev,Wijk an Zee 1996" > >This one is very tough. I analyzed it for several hours with the electronical >friends and they seemed to have a very hard time. > >Maybe you will have to give your engine some time to find Nd5 before you give it >even more to avoid it again :). > >Any engine that can solve this ? > >To get an idea what is going on, here is what the GMs played: > >18...Nd5 19.Rad1 f5 20.Bc1 Bd6 21.Bxd5 exd5 22.Rxd5 +- > >Especially 20.Bc1 seems to be hard but I believe it's the pure depth which is >the biggest problem. > >Regards, >pete > >PS: Btw, 18...Nd5 is in Fritz 7 tournament book ;-) This is the output from Deamon running on a PIII 800MHz with 64MB hashtables: D Score Time Nodes PV -------------------------------------------------------------------------- 1. 2.40 0.02 156 Bd7 2. 2.33 0.03 1795 Kxh6 Qxf6+ 3. 2.49 0.08 14860 Be5 Be3 Bd7 4. 2.17 0.16 36393 Be5 Be3 Nd5 Kg1 5. 1.93 0.68 256185 Nd5 Bd2 Bf4 Bxf4 Nxf4 6. 1.77 1.82 736698 Nh5 Be3 Bf4 Bc2+ Kh6 Kg1 <HT> 7. 1.28 5.74 2498738 Nd5 Bc1 Kg7 c4 Nb6 8. 1.25 15.47 7566484 Nd5 Bc1 Kg7 g3 Bxg3 fxg3 Kg8 Bh6 9. 1.13 61.65 32572346 Nd5 Bc1 Kg7 g3 Bxg3 fxg3 Kg8 Qg4+ Kh8 Bf4
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