Author: Jorge Pichard
Date: 08:45:09 02/18/03
Go up one level in this thread
On February 18, 2003 at 10:57:24, bobby palacios wrote: >On February 18, 2003 at 10:23:37, Jorge Pichard wrote: > >>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 > > > >hmm, Fritz 8.0.0.8 now finds the move in 2 minutes! I cleared the hashtable >before letting it run, and it finds the move. I tried it with different hash >settings and it still found the move in 2 minutes or so. Rather strange. > >p4 2.47ghz, 256mb hash: > Thanks that was my problem too, now Fritz 8 is finding 40.RxP in 00:01:45 with my Wife XP 2400+. Pichard. >Analysis by Fritz 8: > >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 > +- (1.81) Depth: 7/18 00:00:00 28kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 > +- (1.81) Depth: 8/18 00:00:00 42kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.Rd8 Ra6 5.Rxd5 Kf6 6.Ke4 > +- (1.72) Depth: 9/21 00:00:00 90kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.Rd8 Ra6 5.Rxd5 Kf6 6.Ke4 Re6 > +- (1.53) Depth: 10/20 00:00:00 214kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.a6 Rb6 5.c4 dxc4+ 6.Kxc4 h4 7.gxh4 > +- (1.75) Depth: 11/24 00:00:00 518kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.a6 Rb6 5.c4 Kf6 6.Ra7 > +- (1.56) Depth: 12/30 00:00:01 1080kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 Ra2 8.h4 Rg2 >9.Rxa7 > +- (1.72) Depth: 13/26 00:00:03 2765kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 Ra2 8.Rxa7 >Rxa7 9.Nxa7 > +- (1.84) Depth: 14/30 00:00:07 5855kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 Ra2 8.Rxa7 >Rxa7 9.Nxa7 > +- (1.84) Depth: 15/31 00:00:14 12409kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 h4 8.Nxa7 Ra2 >9.Kd4 Rd2+ > +- (1.88) Depth: 16/35 00:00:33 29303kN >1.a5 Bc7 2.Rc8 Be5 3.Rc5 h4 4.Rxd5 Bxd4 5.Rxd4 hxg3 6.hxg3 Kf8 7.Ke4 Re6+ 8.Kd5 >Re8 9.c4 Rb8 10.c5 f5 > +- (1.91) Depth: 17/40 00:01:35 81107kN >1.Rxa6! > +- (1.94) Depth: 17/40 00:02:02 103345kN >1.Rxa6! > +- (2.22) Depth: 18/47 00:03:29 182030kN >1.Rxa6! > +- (2.50) Depth: 19/56 00:08:06 428935kN >1.Rxa6! > +- (2.78) Depth: 19/56 00:14:04 694471kN > > >128mb hash: > >Analysis by Fritz 8: > >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 > +- (1.81) Depth: 7/18 00:00:00 28kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 > +- (1.81) Depth: 8/18 00:00:00 42kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.Rd8 Ra6 5.Rxd5 Kf6 6.Ke4 > +- (1.72) Depth: 9/21 00:00:00 90kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.Rd8 Ra6 5.Rxd5 Kf6 6.Ke4 Re6 > +- (1.53) Depth: 10/20 00:00:00 214kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.a6 Rb6 5.c4 dxc4+ 6.Kxc4 h4 7.gxh4 > +- (1.75) Depth: 11/24 00:00:00 518kN >1.a5 Bc7 2.b5 axb5 3.Nxb5 Be5 4.a6 Rb6 5.c4 Kf6 6.Ra7 > +- (1.56) Depth: 12/30 00:00:01 1080kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 Ra2 8.h4 Rg2 >9.Rxa7 > +- (1.72) Depth: 13/26 00:00:03 2762kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 Ra2 8.Rxa7 >Rxa7 9.Nxa7 > +- (1.84) Depth: 14/31 00:00:07 5774kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 Ra2 8.Rxa7 >Rxa7 9.Nxa7 > +- (1.84) Depth: 15/31 00:00:16 12638kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.a7 Ra6 5.Nb5 Bb6 6.Rb8 Bxa7 7.Ra8 h4 8.Nxa7 Ra2 >9.Kd4 Rd2+ 10.Kc5 Rxh2 > +- (1.88) Depth: 16/34 00:00:38 29116kN >1.a5 Bc7 2.b5 Bxa5 3.bxa6 Bc7 4.Nb5 Bb6 5.a7 Rf3+ 6.Kc2 Rf2+ 7.Kb3 Bxa7 8.Rxa7 >Rxh2 9.Nd6 Rf2 > +- (1.81) Depth: 17/40 00:01:24 64851kN >1.Rxa6! > +- (1.84) Depth: 17/40 00:01:51 86417kN >1.Rxa6! > +- (2.00) Depth: 17/40 00:02:04 98263kN
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