Author: John Merlino
Date: 10:38:48 12/19/02
Go up one level in this thread
On December 19, 2002 at 02:33:56, Uri Blass wrote: >On December 18, 2002 at 19:31:40, John Merlino wrote: > >>On December 18, 2002 at 15:01:46, José Antônio Fabiano Mendes wrote: >> >>>On December 18, 2002 at 14:58:17, José Antônio Fabiano Mendes wrote: >>> >>>> Peter Leko vs Ghaem Maghami, Erevan 2001 >>>> [D]1n2kb1r/1bqr1ppp/p3pP2/6N1/Pp2N3/4Q3/4B1PP/1R3RK1 w >>>> And here GM Leko played 20. Rxb4!! and won in a few moves. >>>> Please see ==> http://www.chessgames.com/perl/chessgame?gid=1202500 >>>> =================================================================== >>>>In Yearbook 59 Hungarian IM Tibor Karolyi wrote a lengthy and incredibly >>>>thorough survey on the Polugaevsky Variation called 'Questions About 10.exf6'. >>>>But it took somebody of the stature of Peter Leko to come up with this fantastic >>>>novelty 20.Rxb4!! from his game against Ghaem Maghami, Erevan World Team >>>>Championship 2001. I would say there is still hope for mankind! >>>>Rene Olthof Interview 2002/10/25 <== http://chess-sector.odessa.ua/olthof.htm >> >>CM9000, on a P3-733, finds the move in less than one second, but does not see it >>as winning in a reasonable amount of time: >> >>Time Depth Score Positions Moves >>0:00 1/3 -0.19 3513 1.Rxb4 Nc6 2.Rc4 >>0:00 1/3 -0.11 4488 1.fxg7 Bxg7 2.Rxb4 O-O 3.Nf6+ Bxf6 >> 4.Rxf6 >>0:00 1/4 -0.54 9548 1.fxg7 Bxg7 2.Rbc1 Nc6 3.Nf6+ Bxf6 >> 4.Rxf6 >>0:00 1/4 -0.10 14341 1.Rxb4 Nc6 2.Rc4 h5 >>0:00 1/5 -0.09 54003 1.Rxb4 Nc6 2.fxg7 Bxg7 3.Rxb7 Qxb7 >> 4.Rxf7 Qb1+ 5.Rf1 Bd4 >>0:02 1/6 -0.18 150376 1.Rxb4 Nc6 2.Rc4 h6 3.Nf3 Qd8 >>0:07 1/7 -0.17 465161 1.Rxb4 Nc6 2.Rc4 h6 3.Nf3 Qa5 4.Nc5 >>0:27 1/8 -0.03 1867184 1.Rxb4 Nc6 2.Rc4 h6 3.Nf3 Qa5 4.Rfc1 >> Ne5 5.Nxe5 Qxe5 6.fxg7 Bxg7 >>1:19 1/9 -0.19 5809069 1.Rxb4 Nc6 2.Rc4 h6 3.Nf3 Qd8 4.Rfc1 >> Na5 5.fxg7 Bxg7 6.Rc5 O-O >>6:11 1/10 -0.19 29216306 1.Rxb4 Bxe4 2.fxg7 Bxg7 3.Qxe4 >> Nc6 4.Rc4 Qb6+ 5.Kh1 Ne5 6.Rc8+ >> Ke7 7.a5 Qd6 8.Rxh8 Bxh8 9.Qxh7 >> >>jm > >unfortunately the wrong position was posted. > >1.Rxb4 is trivial for computers. >The main problem is to find 2.Nxe4 that leko found and not 2.fxg7 > >hope that it is a better test position but not sure about it because the >question is if 2.Nxe4 is the only way to win. > >[D]1n2kb1r/2qr1ppp/p3pP2/6N1/PR2b3/4Q3/4B1PP/5RK1 w k - 0 2 > >Uri CM9000, on a P3-733, is unsure about which is the best second move: Time Depth Score Positions Moves 0:00 1/4 -0.03 13421 2.fxg7 Bxg7 3.Nxe4 Nc6 4.Rc4 O-O 0:00 1/4 0.28 15663 2.Nxe4 Bxb4 3.fxg7 Bc3 4.gxh8=Q+ Bxh8 0:02 1/5 0.05 29459 2.Nxe4 Bxb4 3.fxg7 Bc3 4.gxh8=Q+ Bxh8 5.Rc1 Bd4 0:03 1/5 0.19 40115 2.fxg7 Bxg7 3.Nxe4 Nc6 4.Rc4 O-O 5.Nf6+ Bxf6 6.Rxf6 0:05 1/6 0.07 97654 2.fxg7 Bxg7 3.Nxe4 Nc6 4.Rc4 Qa7 5.Rc5 O-O 0:10 1/7 -0.04 452971 2.fxg7 Bxg7 3.Qxe4 Nc6 4.Rc4 Qb6+ 5.Kh1 Ne5 6.Rc8+ Ke7 0:25 1/8 -0.13 1519994 2.fxg7 Bxg7 3.Qxe4 Nc6 4.Rc4 Qb6+ 5.Kh1 Ne5 6.Rb4 Qd6 7.Nf3 Nxf3 8.Rxf3 1:11 1/9 -0.19 5404931 2.fxg7 Bxg7 3.Qxe4 Nc6 4.Rc4 Qb6+ 5.Kh1 Ne5 6.Rc8+ Ke7 7.a5 Qd6 8.Rxh8 Bxh8 9.Qxh7 1:38 1/9 -0.05 7715780 2.Nxe4 Bxb4 3.fxg7 Rg8 4.Nf6+ Kd8 5.Nxg8 Bc5 6.Nf6 Bxe3+ 7.Kh1 Ke7 8.g8=Q 2:23 1/10 -0.05 11668521 2.Nxe4 Bxb4 3.fxg7 Rg8 4.Nf6+ Kd8 5.Nxg8 Bc5 6.Nf6 Bxe3+ 7.Kh1 Ke7 8.g8=Q 3:22 1/10 0.00 16608218 2.fxg7 Bxg7 3.Qxe4 Nc6 4.Rc4 Qb6+ 5.Kh1 Ne5 6.Rc8+ Rd8 7.Rxd8+ Qxd8 8.Nxf7 Nxf7 9.Qxe6+ Qe7 10.Qc8+ Qd8 11.Qe6+ 8:02 2/11 0.14 41405172 2.fxg7 Bxg7 3.Qxe4 Nc6 4.Rc4 Qb6+ 5.Kh1 Nd8 6.Rc8 h5 7.Qh4 Bd4 8.Nxf7 Rxf7 9.Rxd8+ Qxd8 10.Qxd8+ Kxd8 11.Rxf7 jm
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