Author: Eelco de Groot
Date: 11:42:57 03/24/02
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It's an interesting discussion! With my own limited chessknowledge I find it hard to judge what is the best move but I can see what the computers say about it. Some more Rebel perspectives: I checked the position with Rebel personality Q5T, CM8777 is entering so why not also Q5T I thought, it wants to play Ne1 fairly quickly and I don't think it has such a simple "8 pawns are bad" rule. However it judges the position in favor of Black, so I don't know if there shouldn't also be a rule "Don't open up the position if you are behind, unless that is the only way to do something against a coming offensive" Maybe that rule after calculation would still say that Ne1 is actually indeed better than trying to hide behind the pawnchain, as I say, I find it a difficult position. Maybe White is better. So this is what Q5T thinks, I had Century 2.0 running in duplo at the same time (On Celeron 500 MHz) so the times given don't say much. [D]r3kb1r/p4pp1/1n2p2p/np1pP2N/b1pP1BP1/P1P2N2/1P2BP1P/1R3RK1 w kq - Game begin 00:00 06.00 -0.27 1.Rbe1 Bc2 2.Bc1 Nb3 3.Bd1 Bxd1 4.Rxd1 00:00 07.00 -0.28 1.Rbe1 Bc2 2.Kg2 Be4 3.Ng3 Bd3 4.Nd2 00:02 08.00 -0.31 1.Rbe1 Bc2 2.Nh4 Be7 3.Bg3 O-O 4.f4 00:08 09.00 -0.35 1.Rbe1 Bc2 2.Rc1 Bd3 3.Rce1 Rc8 4.Bc1 Nb3 5.Nf4 00:09 09.01 -0.32 1.Bg3 Nb3 2.Bh4 a5 3.Kg2 b4 4.Rbe1 Rb8 5.axb4 axb4 00:19 10.00 -0.29 1.Bg3 Nb3 2.Bh4 a5 3.Kg2 Nd7 4.Rbe1+ g5 00:46 11.00 -0.37 1.Bg3 Bc2 2.Rbc1 Bg6 3.Nf4 Nb3 4.Nxg6 Nxc1 5.Nxh8 Nxe2+ 02:37 11.14 -0.29 1.Ne1 Nb3 2.Be3 04:38 12.00 -0.30 1.Ne1 Kd7 2.Bc1 g6 3.Ng3 Be7 4.f4 Rag8 5.Kh1 Bh4 25:08 13.00 -0.30 1.Ne1 Nb3 2.Be3 g6 3.Ng3 a5 4.f4 b4 Rebel Century 2.0 itself after some time also plays Ne1 in the above position, actually also at ply 11. However Rebel Century 2.0 seems to take a longer time to resolve the extensions. Maybe just bad luck? I would have to try again to see exactly how long as here it was partly running in the background. So maybe it is a good testposition for Ed, if it is just about depth I think versions of Rebel tuned for depth might get the position earlier?: Rebel Engine for ECTool. (c) Ed Schröder Engine version : REBEL CENTURY 2 Rebel personality : Rebel.eng Opening book file : RebelC.mvs Hash table size : 4 MB Analysis mode : Analyzing next move Refresh interval : 500 ms Game begin 00:00 03.08 -0.13 1.Bg3 Rc8 2.Bh4 00:00 06.00 -0.11 1.Rbe1 Nb3 2.g5 hxg5 3.Nxg5 a5 4.Bg4 00:02 07.00 -0.14 1.Rbe1 Bc2 2.Bg3 Nb3 3.g5 Bg6 4.Nf4 00:02 07.01 -0.13 1.Bg3 Bc2 2.Rbc1 Bg6 3.Nf4 Nb3 4.Rcd1 00:04 08.00 -0.15 1.Bg3 Bc2 2.Rbc1 Bg6 3.Nf4 Nb3 4.Rcd1 Be7 00:08 08.08 -0.13 1.Nd2 Bc2 2.Rbe1 Na4 3.Rc1 Bg6 4.b4 Bxh5 00:11 09.00 -0.17 1.Nd2 Bc2 2.Rbe1 Na4 3.Rc1 Bg6 4.b4 Nc6 5.Kg2 00:13 09.01 -0.14 1.Bg3 Bc2 2.Rbc1 Bd3 3.Bxd3 cxd3 4.Nf4 Nb3 00:23 10.00 -0.16 1.Bg3 Bc2 2.Rbc1 Bg6 3.Nf4 Nb3 4.Rcd1 Be4 5.Bh4 Be7 00:55 10.07 -0.11 1.Rbc1 Nb3 2.Rce1 a5 3.Kg2 Rd8 4.Bg3 01:11 11.00 -0.16 1.Rbc1 Nb3 2.Rce1 a5 3.Kg2 b4 4.Bd1 g6 5.Nf6+ Kd8 10:50 11.15 -0.13 1.Ne1 Nb3 13:32 12.00 -0.14 1.Ne1 Nb3 2.Bf3 Rh7 3.Rd1 34:41 13.00 -0.15 1.Ne1 Nb3 2.Be3 g6 3.Ng3 a5 4.f4 b4 Another complicating factor; having entered Ne1 Century 2.0 now takes longer, thirteen ply, to get the score down to about +0.14 for Black and then it rises again somewhat: Rebel Engine for ECTool. (c) Ed Schröder Engine version : REBEL CENTURY 2 Rebel personality : Rebel.eng Opening book file : RebelC.mvs Hash table size : 4 MB Analysis mode : Analyzing next move Refresh interval : 500 ms Last Move : 1.Ne1 (Black to play) 00:00 05.01 0.24 1..Rc8 2.Nf3 Bc2 3.Rbe1 Bd3 00:00 06.00 0.22 1..Rc8 2.Bf3 Nb3 3.Nc2 a5 4.Rbe1 00:02 07.00 0.22 1..Rc8 2.Bf3 g6 3.Nf6+ Ke7 4.g5 Bg7 5.gxh6 00:05 08.00 0.21 1..Rc8 2.g5 Nd7 3.gxh6 gxh6 4.Kh1 Rg8 00:09 08.04 0.25 1..O-O-O 2.Bf3 Kc7 3.Ng2 Bc2 4.Ra1 00:15 09.00 0.16 1..O-O-O 2.g5 g6 3.Nf6 Bg7 4.Nf3 h5 00:18 09.02 0.18 1..Nb3 2.g5 hxg5 3.Bxg5 Kd7 4.Bg4 Be7 5.Bxe7 Kxe7 00:35 09.09 0.20 1..Kd7 2.Bf3 Rh7 3.g5 hxg5 4.Bxg5 Be7 5.Bxe7 Kxe7 6.Ng2 01:11 10.00 0.16 1..Kd7 2.Bg3 Nb3 3.Rd1 Kc6 4.f4 g6 5.Nf6 01:29 10.01 0.21 1..Nb3 2.Ng2 a5 3.g5 hxg5 4.Bxg5 b4 5.Ne3 Ra7 02:44 11.00 0.21 1..Nb3 2.Be3 g6 3.Ng3 Bg7 4.f4 05:33 12.00 0.23 1..Nb3 2.Be3 g6 3.Ng3 a5 4.f4 b4 5.Nc2 13:54 13.00 0.14 1..Nb3 2.Be3 g6 3.Ng3 a5 4.f4 b4 5.Nc2 Nd2 20:05 13.01 0.19 1..Kd7 2.Bg3 Kc6 3.f4 g6 4.Nf6 Be7 5.Nf3 Nb3 59:06 14.00 0.17 1..Kd7 2.Bg3 Nb3 3.Rd1 Kc6 4.f4 g6 5.Nf6 Regards, Eelco
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