Author: Vincent Diepeveen
Date: 15:57:59 05/15/02
Go up one level in this thread
On May 15, 2002 at 17:57:15, José Antônio Fabiano Mendes wrote: Seems there is a subsolution: ++ h5-h8 ++ h5-h2 00:10 0 0 206860 (17487) 9 2.512 Rh5-h2 Ka8-b7 Rh2-c2 Nf8-g6 Rc2-c4 Kb7-a7 Kd6-c 7 Nb8-a6 b5xa6 00:12 0 0 336432 (19230) 10 2.091 Rh5-h2 Ka8-b7 Rh2-c2 Nf8-g6 Rc2-c4 Kb7-a7 Kd6- c7 Nb8-a6 b5xa6 Ng6-e5 ++ h5-f5 00:17 0 0 496916 (31707) 10 2.135 Rh5-f5 Nf8-d7 Kd6-c7 Nd7-c5 Rf5-f2 Nc5-e6 Kc7- c8 Ne6-c5 Rf2-a2 Nb8-a6 b5xa6 ++ h5-h8 00:19 0 0 559235 (33741) 10 2.570 Rh5-h8 Nf8-d7 Kd6-c7 Ka8-a7 Rh8-h2 Nd7-c5 Rh2- a2 Nc5-a6 b5xa6 b6-b5 00:23 0 0 860499 (43497) 11 2.570 Rh5-h8 Nf8-d7 Kd6-c7 Ka8-a7 Rh8-h3 Nd7-c5 Rh3- a3 Nc5-a6 b5xa6 b6-b5 Ra3-a2 ++ h5-h2 00:28 0 0 1087587 (58772) 11 2.589 Rh5-h2 Ka8-b7 Rh2-c2 Nf8-g6 Rc2-c7 Kb7-a8 Rc7 -f7 Ng6-h4 Kd6-c7 Ka8-a7 Kc7-c8 Ka7-a8 Rf7-b7 Nb8-d7 Rb7xd7 00:39 0 0 1740177 (70734) 12 2.882 Rh5-h2 Ka8-b7 Rh2-c2 Nf8-g6 Rc2-c4 Kb7-a7 Rc4 -g4 Nb8-d7 Rg4xg6 Nd7-c5 Rg6-g7 Ka7-a8 Rg7-c7 Ka8-b8 Rc7-e7 Nc5-a4 Re7-c7 Na4-b2 Rc7-e7 01:00 0 0 3315615 (76102) 13 2.898 Rh5-h2 Ka8-b7 Rh2-c2 Nf8-g6 Rc2-c4 Kb7-a7 Rc4 -g4 Ng6-h8 Rg4-g7 Ka7-a8 Kd6-c7 Ka8-a7 Rg7-g4 Nb8-a6 Kc7-d8 Na6-b8 Kd8-e7 Ka7-b7 Rg4-c4 Nh8-g6 Ke7-d6 01:57 0 0 7186759 (213934) 14 MATE28 Rh5-h2 Ka8-b7 Rh2-c2 Nb8-a6 b5xa6 Kb7xa6 Well it doesn't need to be mate in 28, because i don't care whether i mate someone in 30 or 26, as long as i mate my opponent, but it 100% sure is a mate. Without EGTB diep plays Rh8 within 9 seconds and keeps there. I would not be amazed if there are more solutions. > M.Liburkin,1934 === Test Position > [D]kn3n2/8/1p1K4/1P5R/8/8/8/8 w > Source ===> http://members.aol.com/_ht_a/brigosling/psitn060.htm > ===> 1. Rh8! Nfd7 >1...Ng6? 2. Rg8 Nf4 3. Rf8 Ng6 4. Rf7+- > > ===> 2. Kc7 Ka7 >No choice here, other moves lead to Black being mated. > > ===> 3. Re8 ... >3. Rd8? Nc5! 4. Rxb8 Ne6+ 5. Kc8 Nc5=.White can never free his Rook. >3. Rh1? Nc5! 4. Ra1+ Nca6+ 5. bxa6 b5!= > > ===> 3... Nf6! > >3...Nc5? loses because of 4. Re7 Nd3 5. Kc8+ Ka8 6. Rb7 Nc5 7. Rxb6 Nbd7 8. Rc6 >Ka7 9. Kc7 Ka8 10. Rd6 Ka7 11. Rh6 Ka8 12.Rh3+- > > ===> 4. Rxb8 Ne8+ > >4...Nd5+? 5. Kc8 Ne7+ 6. Kd7 Kxb8 7. Kxe7 and White wins the pawn ending. > > ===> 5. Kd7 ... > >5. Kc8? Nd6+ 6. Kc7 Nxb5+ = > > ===> 5...Nc7! > >5...Kxb8? 6. Kxe8 and again the pawn ending is lost for Black.. How can White >prevent the loss of the b-pawn? He finds a remarkable move! > > ===> 6. Ra8+! ... The only move that wins. > > ===> 6...Nxa8 >Other moves end with the same result: 6...Kb7 7. Ra7+ wins. > 6...Kxa8 7. Kxc7 Ka7 8. Kc6+- > > ===> 7. Kc8 Nc7 8. Kxc7 Ka8 9. Kxb6 and White Wins.
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