Author: Jorge Pichard
Date: 07:23:37 02/18/03
Go up one level in this thread
On February 17, 2003 at 20:37:10, bobby palacios wrote: >On February 17, 2003 at 19:04:16, Jorge Pichard wrote: > >>On February 17, 2003 at 18:58:49, Jorge Pichard wrote: >> >>>This Gem of a desperate trap was played by Bogoljubow with the black pieces >>>against Alekhine. Position after Black's 39th move where the trap was set up by >>>Bogoljubow hoping to end up with an extra bishop. Nowadays top computer programs >>>will NOT fall for this desparate trap, since they are all too >>>materialistics and almost 99.9% will play 40.a5 which will also win, but >>>Alekhine decides to walk into the trap and proves that this is the quickest way >>>to WIN! >>> >>>[D]R7/5pk1/pb3rp1/3p3p/PP1N4/2PK2P1/7P/8 w - - >>> >>>40.RxP! BxKt >>>41.RxR BxR winning back the rook with an extra Bishop >>>42.P-R5...Now the extra Bishop is unable to stop the two passed Pawns. >>> >>>If for instance, 42.....B-Q1, THEN SIMPLY 43.K-Q4, FOLLOWED BY KxQP, K-B6, etc. >>> >>>Pichard > >p4 2.47ghz, 256mb hash > >Analysis by Hiarcs 8: > >1.Rxa6 > +- (2.22) Depth: 1 00:00:00 >1.Rxa6 Bxd4 > = (-0.05) Depth: 2/8 00:00:00 >1.Rxa6 Bxd4 2.Rxf6 Bxf6 > ³ (-0.63) Depth: 2/8 00:00:00 >1.b5 axb5 2.axb5 > ± (0.79) Depth: 2/10 00:00:00 >1.b5 axb5 2.axb5 > ± (0.79) Depth: 3/10 00:00:00 >1.b5 axb5 2.axb5 Rf2 3.Ra6 > ± (0.95) Depth: 4/12 00:00:00 >1.b5 axb5 2.axb5 Rf2 3.Ra6 Bxd4 4.Kxd4 Rb2 > ± (0.82) Depth: 5/13 00:00:00 4kN >1.a5 Bc7 2.Ra7 Be5 3.Re7 > ± (0.86) Depth: 5/16 00:00:00 6kN >1.a5 Bc7 2.Ra7 Bb8 3.Rd7 Rd6 > ± (0.86) Depth: 6/16 00:00:00 11kN >1.a5 Bc7 > ± (1.11) Depth: 7/16 00:00:00 21kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.Rd8 Rf3+ 5.Ke2 > +- (1.46) Depth: 7/16 00:00:00 25kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 g5 4.a7 Ra6 5.h3 > +- (1.41) Depth: 8/17 00:00:00 60kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Be5 > ± (1.23) Depth: 9/20 00:00:00 144kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nc6 Bb6 6.h3 > ± (1.27) Depth: 10/22 00:00:01 417kN >1.a5 Bc7 2.Ra7 Be5 3.Rd7 Rf2 4.Rxd5 f6 5.b5 axb5 6.Rxb5 Rxh2 7.Nf3 > +- (1.49) Depth: 11/26 00:00:04 1077kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 h4 4.g4 Rb6 5.a7 Ra6 6.Nc6 Bb6 7.g5 > +- (1.58) Depth: 12/28 00:00:09 2281kN >1.a5 Bc7 2.Ra7 Be5 3.Rd7 Bxd4 4.Kxd4 Rf2 > +- (1.48) Depth: 13/28 00:00:23 5159kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 g5 4.Nb5 Bb6 5.Re8 Rf3+ 6.Kc2 Kf6 7.Rh8 Kg6 8.a7 Rf2+ >9.Kb3 > +- (1.58) Depth: 14/35 00:01:07 15500kN >1.a5 Bc7 > +- (1.83) Depth: 15/37 00:03:20 47319kN >1.a5 Bc7 > +- (1.83) Depth: 15/37 00:03:38 51713kN >1.Rxa6 Bxd4 2.Rxf6 Bxf6 3.a5 Be5 4.b5 Bd6 5.Kd4 h4 6.b6 hxg3 7.hxg3 Bxg3 8.Kxd5 > +- (2.13) Depth: 15/38 00:05:10 76888kN >1.Rxa6 Bxd4 2.Rxf6 Bxf6 3.a5 Bd8 4.Kd4 f5 5.Kxd5 g5 6.a6 Bb6 7.c4 f4 8.c5 Ba7 >9.gxf4 gxf4 10.b5 > +- (2.34) Depth: 16/39 00:08:00 121683kN > >Junior7, S7 and F8 couldn't find Rxa6 within 10 minutes on my machine If you let it a little bit longer using Fritz 8, it will solve it. Now the question is how much longer than using an Athlon XP 2400+, since it took 12 minutes using my wife XP 2400+ with Fritz 8 to solve it. Set it up for 15 minutes and see if your P4 2.47 GHz can solve it. Pichard
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