Author: Joshua Lee
Date: 08:32:34 02/28/01
Go up one level in this thread
I don't know much about this subject but i've noticed something interesting in reguards to it. Namely when looking at endgame positions one move will have a +- winning score and even extenions 22/22Ply but if you back up one move all you get is a falling score with odd extentions. this is with Fritz.... Spassky,B - Byrne,R 3b4/p7/Pp2k3/1P2Bp2/2K2P1p/7P/8/8 w - - 0 1 Analysis by Fritz 6: 58.Kd4! ² (0.69) Depth: 1/2 00:00:00 58.Kd4 Be7 ² (0.59) Depth: 2/5 00:00:00 58.Bb8! ² (0.63) Depth: 2/5 00:00:00 58.Bb8! Bf6 59.Bxa7 +- (2.25) Depth: 2/5 00:00:00 58.Bb8 Kd7 59.Bxa7 Bc7 +- (2.22) Depth: 3/5 00:00:00 58.Bb8 Be7 59.Bxa7 Bc5 +- (2.31) Depth: 4/8 00:00:00 58.Bb8 Be7 59.Bxa7 Bc5 60.Bb8 +- (2.25) Depth: 5/8 00:00:00 58.Bb8 Be7 59.Bxa7 Bc5 60.Bb8 Kd7 61.a7 +- (2.22) Depth: 6/8 00:00:00 58.Bb8 Be7 59.Bxa7 Bc5 60.Bb8 Be3 61.a7 +- (2.34) Depth: 7/11 00:00:00 1kN 58.Bb8 Kd7 59.Kd5 Kc8 60.Bxa7 Bc7 61.Kc6 Bxf4 62.Bxb6 +- (2.53) Depth: 8/11 00:00:00 4kN 58.Bb8 Kd7 59.Kd5 Kc8 60.Bxa7 Bc7 61.Kc6 Bxf4 62.Bxb6 Kb8 +- (2.31) Depth: 9/12 00:00:00 5kN 58.Bb8! +- (2.63) Depth: 10/13 00:00:00 9kN 58.Bb8-- +- (2.31) Depth: 11/11 00:00:00 11kN 58.Bb8-- +- (2.31) Depth: 11/14 00:00:00 14kN 58.Bb8! +- (2.63) Depth: 12/15 00:00:00 23kN 58.Bb8-- +- (2.31) Depth: 13/13 00:00:00 25kN 58.Bb8-- +- (2.31) Depth: 13/16 00:00:00 33kN 58.Bb8! +- (2.63) Depth: 14/18 00:00:00 54kN 58.Bb8-- +- (2.31) Depth: 15/15 00:00:00 60kN 58.Bb8-- +- (2.31) Depth: 15/19 00:00:00 83kN 58.Bb8-- +- (2.00) Depth: 16/17 00:00:00 90kN 58.Bb8-- +- (2.00) Depth: 16/17 00:00:00 97kN 58.Bb8-- +- (1.69) Depth: 17/18 00:00:00 113kN 58.Bb8-- +- (1.69) Depth: 17/20 00:00:00 125kN 58.Bb8-- ± (1.38) Depth: 18/19 00:00:00 153kN 58.Bb8-- ± (1.38) Depth: 18/19 00:00:00 165kN 58.Bb8-- ± (1.06) Depth: 19/19 00:00:00 193kN 58.Bb8-- ± (1.06) Depth: 19/24 00:00:00 317kN 58.Bb8-- ± (0.75) Depth: 20/20 00:00:00 359kN 58.Bb8-- ± (0.75) Depth: 20/26 00:00:00 476kN 58.Bb8-- ² (0.44) Depth: 21/21 00:00:00 547kN 58.Bb8-- ² (0.44) Depth: 21/28 00:00:00 596kN 58.Bb8! ± (0.75) Depth: 22/31 00:00:02 1365kN, tb=2 58.Bb8-- ² (0.44) Depth: 23/25 00:00:02 1451kN, tb=2 58.Bb8-- ² (0.44) Depth: 23/35 00:00:02 1882kN, tb=10 58.Bb8! ± (0.75) Depth: 24/35 00:00:04 3460kN, tb=17 58.Bb8-- ² (0.44) Depth: 25/27 00:00:05 3717kN, tb=17 58.Bb8-- ² (0.44) Depth: 25/37 00:00:06 4703kN, tb=29 58.Bb8-- = (0.13) Depth: 26/36 00:00:07 5661kN, tb=38 58.Bb8-- = (0.13) Depth: 26/38 00:00:09 7092kN, tb=53 58.Kd4! = (0.16) Depth: 26/45 00:00:36 24625kN, tb=182 (Lee, Pensacola,Fl 28.02.2001) and the next move..... Spassky,B - Byrne,R 1B1b4/p7/Pp2k3/1P3p2/2K2P1p/7P/8/8 b - - 0 1 Analysis by Fritz 6: 58...Bf6-- +- (1.75) Depth: 1/2 00:00:00 58...Bf6-- 59.Bxa7 +- (2.25) Depth: 1/3 00:00:00 58...Bf6 59.Bxa7 +- (2.25) Depth: 2/4 00:00:00 58...Bf6 59.Bxa7 Bd8 +- (2.50) Depth: 3/5 00:00:00 58...Be7! +- (2.31) Depth: 3/5 00:00:00 58...Be7 59.Bxa7 Bc5 60.Bb8 +- (2.25) Depth: 4/7 00:00:00 58...Be7 59.Bxa7 Bc5 60.Bb8 Kd7 61.a7 +- (2.22) Depth: 5/9 00:00:00 58...Be7 59.Bxa7 Bc5 60.Bb8 Be3 61.a7 +- (2.34) Depth: 6/8 00:00:00 58...Be7-- +- (2.66) Depth: 7/10 00:00:00 1kN 58...Be7-- +- (2.66) Depth: 7/10 00:00:00 2kN 58...Ke7! +- (2.62) Depth: 7/10 00:00:00 2kN 58...Ke7! 59.Bxa7 Bc7 60.Kd5 Kd7 +- (2.34) Depth: 7/11 00:00:00 3kN 58...Ke7-- +- (2.66) Depth: 8/12 00:00:00 4kN 58...Ke7-- +- (2.66) Depth: 8/12 00:00:00 4kN 58...Bf6! +- (2.62) Depth: 8/12 00:00:00 5kN 58...Kd7! +- (2.59) Depth: 8/12 00:00:00 7kN 58...Kd7! 59.Kd5 Kc8 60.Bxa7 Bc7 +- (2.41) Depth: 8/12 00:00:00 7kN 58...Be7! +- (2.37) Depth: 8/12 00:00:00 7kN 58...Be7-- +- (2.69) Depth: 9/11 00:00:00 9kN 58...Be7-- 59.Bxa7 Kd7 60.Bxb6 Kc8 61.Bc5 Bf6 62.b6 Kb8 63.Bd6+ +- (4.16) Depth: 9/15 00:00:00 15kN 58...Kd7! +- (4.12) Depth: 9/15 00:00:00 15kN 58...Kd7! 59.Kd5 Bc7 60.Bxc7 Kxc7 61.Ke5 Kd8 62.Kxf5 Ke7 63.Ke5 +- (2.69) Depth: 9/15 00:00:00 17kN 58...Kd7-- +- (3.00) Depth: 10/13 00:00:00 21kN 58...Kd7-- +- (3.00) Depth: 10/13 00:00:00 21kN 58...Kd7 59.Kd5 Kc8 60.Bxa7 Bc7 61.Ke6 Bxf4 62.Bxb6 Kb8 63.Kxf5 +- (3.28) Depth: 11/15 00:00:00 38kN 58...Kd7 59.Kd5 Kc8 60.Bxa7 Bc7 61.Ke6 Bxf4 62.Bxb6 Bg3 63.Kxf5 +- (3.31) Depth: 12/17 00:00:00 58kN 58...Kd7 59.Kd5 Kc8 60.Bxa7 Bc7 61.Ke6 Bxf4 62.Bxb6 Kb8 63.Kxf5 +- (3.41) Depth: 13/18 00:00:00 90kN 58...Kd7-- +- (3.72) Depth: 14/19 00:00:00 139kN 58...Kd7-- +- (3.72) Depth: 14/19 00:00:00 143kN 58...Kd7-- +- (4.03) Depth: 15/19 00:00:00 231kN 58...Kd7-- +- (4.03) Depth: 15/19 00:00:00 236kN 58...Ke7! +- (4.00) Depth: 15/21 00:00:00 299kN 58...Ke7 59.Kd5 Kd7 60.Ke5 Kc8 61.Bxa7 Bc7+ 62.Kxf5 Kd7 63.Kg4 +- (3.94) Depth: 16/20 00:00:00 364kN 58...Ke7! +- (3.62) Depth: 17/25 00:00:00 484kN 58...Ke7-- +- (3.94) Depth: 18/19 00:00:00 557kN 58...Ke7-- +- (3.94) Depth: 18/24 00:00:01 612kN 58...Kd7! +- (3.91) Depth: 18/24 00:00:01 643kN, tb=1 58...Kd7-- +- (4.22) Depth: 19/25 00:00:01 951kN, tb=3 58...Kd7-- +- (4.22) Depth: 19/27 00:00:01 1021kN, tb=4 58...Ke7! +- (4.19) Depth: 19/29 00:00:01 1139kN, tb=5 58...Ke7-- +- (4.50) Depth: 20/27 00:00:02 1631kN, tb=5 58...Ke7-- +- (4.50) Depth: 20/27 00:00:02 1753kN, tb=5 58...Kd7! +- (4.47) Depth: 20/27 00:00:02 1872kN, tb=8 58...Kd7-- +- (4.78) Depth: 21/29 00:00:04 3112kN, tb=25 58...Kd7-- +- (4.78) Depth: 21/33 00:00:04 3420kN, tb=28 58...Ke7! +- (4.75) Depth: 21/33 00:00:05 3692kN, tb=28 58...Ke7 59.Kd5 Kd7 60.Ke5 Kc8 61.Bxa7 Bc7+ 62.Kxf5 Kd7 63.Kg5 +- (5.00) Depth: 22/31 00:00:08 6007kN, tb=36 58...Kd7! +- (4.97) Depth: 22/31 00:00:09 6818kN, tb=69 58...Kd7-- +- (5.28) Depth: 23/31 00:00:12 9161kN, tb=108 58...Kd7-- +- (5.28) Depth: 23/38 00:00:15 11288kN, tb=112 58...Ke7! +- (5.25) Depth: 23/38 00:00:16 12004kN, tb=112 58...Ke7! 59.Kd5 Kd7 60.Ke5 Kc8 61.Bxa7 Bc7+ 62.Kxf5 Kd7 63.Kg6 +- (5.06) Depth: 23/38 00:00:17 12612kN, tb=118 (Lee, Pensacola,Fl 28.02.2001) Is this common ?
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