Author: Larry Griffiths
Date: 06:34:56 08/31/00
Go up one level in this thread
On August 30, 2000 at 16:01:52, Peter McKenzie wrote: >This position is what could have happened in Nimzo - Shredder in London. >Is from the possible variation 24...Qxb4 25.Qxd5 > >Even this position requires 13ply (about 7.5 hours on my P133) for Lambchop to >return a really bad score (see output below). I'd be interested in how other >programs go on this position. (Note the terrible branching factor at depth 12 >and 13) > >[D]r3rb1k/6p1/p2p3p/1ppQ4/Pq6/5NRP/5PP1/1B2R1K1 b - - > > _______________________ Black to play > 8 |br|__|__|__|br|bb|__|bk| > 7 |__|__|__|__|__|__|bp|__| > 6 |bp|__|__|bp|__|__|__|bp| > 5 |__|bp|bp|WQ|__|__|__|__| > 4 |WP|bq|__|__|__|__|__|__| > 3 |__|__|__|__|__|WN|WR|WP| > 2 |__|__|__|__|__|WP|WP|__| > 1 |__|WB|__|__|WR|__|WK|__| > a b c d e f g h > >Depth, score, time, nodes > > 0 0 0 0 e8e1 > 1 204 0 57 e8e1 f3e1 b4e1 g1h2 > 2 204 0 228 e8e1 f3e1 b4e1 g1h2 > 3 225 0 487 e8e1 f3e1 b4e1 g1h2 a8e8 > 4 280 0 1451 e8e1 f3e1 a8e8 g1h2 b4b1 > 5 209 100 5007 e8e1 f3e1 a8e8 d5f5 e8e1 g1h2 h8g8 f5h7 g8f7 h7g6 f7e7 > 6 209 200 10404 e8e1 f3e1 a8e8 d5f5 e8e1 g1h2 h8g8 > 7 73 700 68142 e8e1 f3e1 b4e1 g1h2 e1b1 d5a8 b1f5 g3f3 f5e5 h2h1 > 8 73 1100 118111 e8e1 f3e1 b4e1 g1h2 e1e8 d5d3 g7g6 > 9 32 2600 286579 e8e1 f3e1 b4e1 g1h2 e1e8 g3e3 e8b8 d5f5 d6d5 h2h1 g7g6 f5g >6 >10 -25 7200 826264 e8e1 f3e1 b4e1 g1h2 e1e8 g3e3 e8d8 d5d3 g7g6 d3g6 a8a7 b1a >2 >11 32 14700 1740365 e8e1 f3e1 b4e1 g1h2 e1e8 g3e3 e8b8 d5f5 g7g6 f5g6 b8b7 > >12 -19 441600 53229976 e8e1 f3e1 b4e1 g1h2 e1e8 g3e3 e8d8 d5d3 g7g6 d3g6 d8d7 b >1e4 d6d5 g6f6 h8g8 > >13 -112 2648900 320991614 e8e1 f3e1 a8e8 d5f5 e8e1 g1h2 h8g8 f5h7 g8f7 g3f3 f7e8 >Q b1g6 e8d7 f3f8 e1e7 a4b5 a6b5 h7g8 b4c4 g6f5 d7c7 Mine thinks it looks drawish at ply 10. 00:00:10.615 10 - 4000 Qxe1 Nxe1 Rxe1 Kh2 Ra7 Qf5 Rxb1 Qxb1 bxa4 Rxg7 00:00:13.329 10 - 0 Rxe1 Nxe1 Re8 Nd3 Qxb1 Kh2 bxa4 Qf7 Re2 Qxf8 00:00:26.238 10 - 0 Rxe1 <---------- 00:00:34.249 11 - 3000 Qxe1 Nxe1 Rxe1 Kh2 Ra7 Qf5 Rxb1 Qxb1 bxa4 f3 c4 00:00:42.842 11 - -2000 Rxe1 Nxe1 Qxe1 Kh2 Ra7 Qd3 g5 Qf5 Kg7 Qh7 Kf6 00:02:06.682 11 - -2000 Rxe1 <---------- 00:02:31.949 12 - 4000 Qxe1 Nxe1 Rxe1 Kh2 Rd8 Qd3 Rxb1 Qxb1 bxa4 h4 Rd7 Rxg7 00:03:05.226 12 - 1000 Rxe1 Nxe1 Qxe1 Kh2 Rd8 Qd3 Kg8 Qh7 Kf7 Qf5 Ke7 Qxf8 00:08:33.749 12 - 1000 Rxe1 <---------- 00:10:38.488 13 - 3000 Qxe1 Nxe1 Rxe1 Kh2 Rd8 Qf5 Kg8 axb5 axb5 Rf3 g6 Qxg6 Kh8 00:12:47.864 13 - -2000 Rxe1 Nxe1 Re8 Qf5 Rxe1 Kh2 Kg8 Qh7 Kf7 Ba2 Ke7 axb5 axb5 00:37:54.991 13 - -2000 Rxe1 <---------- 00:46:41.989 14 - 5000 Qxe1 Nxe1 Rxe1 Kh2 Rb8 Qf5 Rxb1 Qxb1 c4 axb5 axb5 f3 c3 Qxb5 00:56:02.575 14 - 1000 Rxe1 Nxe1 Qxe1 Kh2 Qe8 axb5 axb5 Qd3 g6 Qf3 g5 h4 d5 Qxf8 02:27:46.409 14 - 1000 Rxe1 <----------
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