Author: John Merlino
Date: 12:58:31 09/02/02
Go up one level in this thread
On September 02, 2002 at 15:37:40, Uri Blass wrote: >The following position happen in a game of movei against fortress. > >Movei main problem in that tournament is the endgame and I find that it missed >a lot of points because of blundering in the endgame > >I think that Movei could save a draw in the following position. >Am I right? > >Here is the position and yace's line after many hours. >Movei played 62.Kg4 that is a losing move. > >I wonder if Rb7 was enough for a draw. >some analysis suggest that it is a draw but I am not sure. > >Another question is if Rb7 is the only drawing move. >I think to include the position in a test suite based on movei's games and I >need to know the drawing moves(the position is simple enough to get a definite >consequence based on human analysis but I do not want to waste hours about it >and I prefer if a good player can tell me based on knowledge what are the >drawing moves. > >Movei 0.0.72h - Fortress 1.62 >[D]8/P3R3/8/3p4/3kpK2/8/8/r7 w - - 0 1 > >Analysis by Yace 0.99.56: >62.Rb7 e3 63.Kf3 Ra6 64.Re7 Rf6+ 65.Kg4 Rf8 66.Rb7 e2 67.Rb8 e1Q 68.Rxf8 Qe2+ >69.Kg3 Qd3+ 70.Kf2 Qc2+ 71.Kg3 Qc7+ 72.Rf4+ Ke3 73.a8Q Qxf4+ 74.Kh3 d4 75.Qa7 >Kd2 > -+ (-1.58) Depth: 19 00:34:49 662746kN >62.Rb7 e3 63.Kf3 Ra6 64.Re7 Rf6+ 65.Kg4 Rf8 66.Rb7 e2 67.Rb8 e1Q 68.Rxf8 Qe2+ >69.Kg3 Qd3+ 70.Kg4 Qd1+ 71.Kg5 Qd2+ 72.Rf4+ Ke5 73.a8Q > µ (-1.36) Depth: 20 01:44:46 2003229kN >62.Rb7 e3 63.Kf3 Ra6 64.Re7 Rf6+ 65.Kg4 Rf8 66.Rb7 e2 67.Rb8 e1Q 68.Rxf8 Qe2+ >69.Kg3 Qd3+ 70.Kg4 Qd1+ 71.Kh4 Qd2 72.a8Q Ke5 > µ (-0.96) Depth: 21 04:41:25 1200057kN >62.Rb7 e3 63.Kf3 Ra6 64.Re7 Rf6+ 65.Kg4 Rf8 66.Rb7 e2 67.Rb8 e1Q 68.Rxf8 Qe2+ >69.Kg3 Qd3+ 70.Kg4 Qd1+ 71.Kh4 > µ (-0.96) Depth: 21 04:59:56 1478887kN > >Uri Chessmaster 9000, on a PIII-733, says: Time Depth Score Positions Moves 0:00 1/3 -0.80 1084 1.Rd7 e3 2.Kf3 0:00 1/4 -0.64 3457 1.Rd7 Rf1+ 2.Kg3 Rg1+ 3.Kf2 Ra1 4.Re7 0:00 1/5 -0.74 9303 1.Rd7 Rf1+ 2.Kg3 Rg1+ 3.Kf2 Ra1 4.Ke2 Ra2+ 5.Kd1 0:00 2/6 -0.70 31879 1.Rd7 Ra2 2.Rg7 Kd3 3.Rg3+ Kc4 4.Rg7 Ra1 0:00 2/6 -0.65 47070 1.Rb7 Kd3 2.Rb3+ Kc2 3.Rb7 Ra3 4.Rd7 0:01 3/7 -0.67 77332 1.Rb7 Ra3 2.Re7 Kc5 3.Rb7 Kc6 4.Re7 0:01 4/8 -0.68 136614 1.Rb7 Kc5 2.Re7 Kb6 3.Rd7 Rxa7 4.Rxd5 Re7 5.Ke3 0:04 5/9 -0.77 328179 1.Rb7 Kc5 2.Re7 Ra3 3.Ke5 Ra5 4.Rd7 Kb6 5.Kd4 Rxa7 6.Rxd5 0:07 6/10 -0.72 621847 1.Rb7 Kc5 2.Re7 Ra3 3.Ke5 e3 4.Kf4 d4 5.Kf3 Ra1 0:12 7/11 -0.69 1239078 1.Rb7 Kc5 2.Re7 Ra3 3.Rh7 Kb6 4.Rd7 Kc6 5.Rh7 Kd6 6.Rg7 0:35 8/12 -0.63 3751010 1.Rb7 Kc5 2.Re7 Ra3 3.Rh7 Kb6 4.Rd7 Rxa7 5.Rxd5 Re7 6.Ke3 Re6 7.Rd1 1:11 9/13 -0.67 7592056 1.Rb7 Kc5 2.Re7 Ra3 3.Rh7 Kb6 4.Rd7 Rxa7 5.Rxd5 Re7 6.Ke3 Re6 7.Rd1 Kc5 2:24 10/14 -0.67 16055322 1.Rb7 Kc5 2.Rc7+ Kb6 3.Rd7 Kc6 4.Re7 Kd6 5.Rf7 Ra2 6.Ke3 Kc6 7.Rh7 Kb6 8.Rd7 Ra3+ 9.Ke2 Rxa7 10.Rxd5 jm
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