Author: Ernst Walet
Date: 10:48:48 09/08/02
Go up one level in this thread
On September 02, 2002 at 03:59:32, Terry Ripple wrote: >On September 02, 2002 at 03:32:00, Steffen Jakob wrote: > >>On September 02, 2002 at 03:23:43, Terry Ripple wrote: >> >>>Hello again Steffen, >>>I checked your problem once again, but with "Deep Fritz" and found out why you >>>didn't find the solution with this engine. It wasn't because your pc is slow >>>,but because Deep Fritz can't find the correct answer(Ng5+)and as a matter of >>>fact it couldn't find it in 2 hours! What do you say to that? It can't do what >>>it's brother Fritz 7 could do! >> >>The problem is that the score for Ng5+ (F7) is almost the same as for Qf4 (DF7). >> >>Greetings, >>Steffen. >--------------- >Fritz 7 detected the difference of only .3 between the moves Qf4 and Ng5+. It's >latest thought on Qf4 was 1.57 before switching to Ng5+ that started with a >score of 1.60 and so i'am curious why Deep Fritz can't do the same detection? > >Wouldn't the scores need to be exactly the same to possibly not being able to >show the correct answer? The scores from Fritz 7 seem to show enough difference >and because Deep Fritz is a close brother in it's programming i thought it would >be not much difference either and thus be able to find Ng5+. > >Regards, > Terry Fritz7 here does not have much difficulty finding Ng5+, 15 ply in 252 seconds. Ernst. New game r1b2r2/pp1p1p1k/1qn2Ppp/5p2/3p4/3B1N2/PPPQ1PPP/R3R1K1 w - - 0 1 Analysis by Fritz 7: 1.Rab1 d6 2.Bc4 Qd8 3.Rbd1 Qxf6 4.Qf4 Be6 5.Qxd6 ² (0.47) Depth: 8/25 00:00:00 326kN 1.Rab1 Qd8 2.Re2 d5 3.Qf4 Qxf6 4.Rbe1 Be6 5.a3 ² (0.59) Depth: 9/22 00:00:00 442kN 1.Qf4! ² (0.63) Depth: 9/22 00:00:01 602kN 1.Qf4! ± (0.78) Depth: 9/22 00:00:01 639kN 1.Qf4 Qxb2 2.Qh4 h5 3.Bxf5 Kg8 4.Be4 d5 ± (0.84) Depth: 9/22 00:00:01 684kN 1.Qf4 d6 2.Qh4 h5 3.Ng5+ Kg8 4.Rab1 Be6 5.Nxe6 fxe6 6.Rxe6 Ne5 ± (0.94) Depth: 10/25 00:00:02 1083kN 1.Qf4 d6 2.Qh4 h5 3.Rab1 Kg8 4.Qf4 Qd8 5.Qg5 Be6 6.a3 ± (1.09) Depth: 11/29 00:00:05 2733kN 1.Qf4 d5 2.Qh4 h5 3.Rab1 Kg8 4.Qg5 Nd8 5.Ne5 Ne6 6.Qg3 Re8 ± (1.22) Depth: 12/33 00:00:16 8807kN 1.Qf4 d5 2.Qh4 h5 3.g4 Nb4 4.Rad1 Nxd3 5.gxh5 g5 6.Nxg5+ Kh6 ± (1.34) Depth: 13/35 00:01:11 39372kN 1.Qf4 Nb4 2.Qh4 Kg8 3.Nxd4 Nxd3 4.cxd3 d5 5.Rac1 a5 6.Rc2 Ra6 7.Nf3 Qxf6 8.Qxh6 +- (1.56) Depth: 14/36 00:02:21 78927kN 1.Qf4 Nb4 2.Qh4 Kg8 3.Re5 d5 4.Bxf5 Qd6 5.Bd3 Bd7 6.Re7 Rad8 7.Rae1 Nc6 8.R7e2 +- (1.59) Depth: 15/35 00:03:32 120868kN 1.Ng5+! +- (1.63) Depth: 15/36 00:04:12 145232kN 1.Ng5+ hxg5 2.Qxg5 Nb4 3.Bxf5 Nd5 4.Be4 Qxf6 5.Qxd5 d6 6.Rad1 Be6 7.Qxd4 Qxd4 8.Rxd4 +- (1.69) Depth: 15/36 00:04:19 149599kN 1.Ng5+! +- (1.97) Depth: 16/37 00:04:50 168520kN 1.Ng5+ hxg5 2.Qxg5 Nb4 3.Re5 d5 4.Bxf5 Bxf5 5.Qh4+ Kg8 6.Rxf5 Nxc2 7.Rh5 Qxf6 8.Qxf6 +- (2.09) Depth: 17/42 00:08:10 291633kN (Celeron 1.2GHz, 832MB hash, 3, 4 and 5 piece EGTB's 08.09.2002)
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