Author: Eelco de Groot
Date: 12:29:20 12/02/05
Go up one level in this thread
On December 02, 2005 at 10:19:12, Jon Dart wrote: >Some deeper analysis on 16 .. b4: > >[D] r1r3k1/1bq1bppp/p1npp3/1pnB1NPQ/4P3/2N1B3/PPP2P1P/2KR2R1 b - - > > bm g6 >result: g6 3600 seconds. score: +1.06 1612689648 nodes. ++ corre >ct >g6 Nh6+ Kg7 Qf3 Ne5 Bd4 Bxg5+ Rxg5 exd5 Bxe5+ dxe5 Nf5+ Kf8 Ne3 d4 Ned5 Qc6 Nb4 >Qc7 Ncd5 >result(2): Ne5 3600 seconds. score: -0.14 1662190369 nodes. >** error >Ne5 Bxc5 exf5 f4 Qxc5 Bxb7 b4 Rg3 bxc3 Rxc3 Nc4 Rh3 Kf8 Bxa8 Rxa8 >result(3): Nb4 3600 seconds. score: -0.86 1610055515 nodes. >** error >Nb4 Nh6+ gxh6 g6 fxg6 Rxg6+ Kh8 Bd4+ e5 Qxh6 Bf6 Bxc5 Nxd5 Nxd5 Bxd5 Rxd5 Bg7 Qx >g7+ Qxg7 Rxg7 Kxg7 Bxd6 Rd8 > >So .. b4 looks bad, it is not in the top 3 moves. > >--Jon Hi Jon, yes that move seems not correct but made a nice game possible? Gambit Fruit Beta 4b quickly rejects playing 16..b4 when the evaluation drops to -1.37 00:00:00.0 1,32 1 75 exd5 Bxc5 dxc5 Nxd5 00:00:00.0 -0,82 2 9365 exd5 Nxd5 g6 Nxc7 gxh5 Nxa8 Rxa8 Nxe7+ Nxe7 Bxc5 dxc5 00:00:00.0 1,07 2 9611 exf5 Qxf7+ Kh8 Qxf5 00:00:00.0 1,26 3 11299 exf5 Bxf7+ Kh8 exf5 00:00:00.0 0,96 4 15565 exf5 Bxf7+ Kh8 Bg6 h6 gxh6 00:00:00.0 0,96 5 27612 exf5 Bxf7+ Kh8 Bg6 h6 gxh6 00:00:00.1 1,36 5 37584 g6 Qh4 exf5 b4 fxe4 Bxc5 dxc5 Bxc6 00:00:00.1 0,86 6 56528 g6 Nh6+ Kf8 Qh3 exd5 Nxd5 Qa5 Bxc5 dxc5 Nxe7 Nxe7 00:00:00.2 0,81 7 115452 g6 Nh6+ Kf8 Qe2 exd5 Nxd5 Qd8 Qf3 Ne5 00:00:00.5 0,72 8 274120 g6 Nh6+ Kf8 Qe2 exd5 Nxd5 Qd8 Nxe7 Qxe7 Bxc5 dxc5 Qf3 00:00:01.4 0,33 9 807927 g6 Nh6+ Kf8 Qh4 exd5 Nxd5 Qd7 Nb6 Qe6 Nxa8 Rxa8 Bxc5 dxc5 00:00:04.3 1,12 9 2709556 b4 Bxc6 Bxc6 Nxe7+ Qxe7 Bxc5 dxc5 Ne2 Bxe4 Kb1 Rd8 f3 Bd5 00:00:07.2 1,15 10 4620692 b4 Bxc6 Bxc6 Nxe7+ Qxe7 Bxc5 dxc5 Ne2 Bxe4 Kb1 Qb7 Rge1 Rd8 Nf4 00:00:16.9 -0,13 11 10810450 b4 Bxc5 bxc3 g6 cxb2+ Kb1 hxg6 Rxg6 exf5 Bxf7+ Kf8 Be6 Ke8 Bxc8 Rxc8 Rxg7+ Kf8 00:00:41.7 -1,37 12 26927130 b4 Bxc5 g6 Qh6 exf5 Bxf7+ Kh8 Nd5 Bxg5+ Qxg5 Qxf7 Bxd6 fxe4 Qf6+ Qxf6 Nxf6 a5 Nxe4 00:00:47.5 0,27 12 30668142 g6 Nh6+ Kf8 Qh4 b4 Bxc6 Bxc6 Qf4 Be8 Bxc5 Qxc5 Qd2 00:01:29.6 1,31 13 57349075 g6 Nh6+ Kg7 Qh3 b4 Bxc5 dxc5 Bxc6 Bxc6 Ne2 Bxe4 Rg4 Bd5 f4 Qa5 a3 00:01:48.2 1,30 14 69795331 g6 Nh6+ Kg7 Qh3 b4 Bxc5 dxc5 Bxc6 Bxc6 Ne2 Bxe4 f4 Rd8 Kb1 a5 Ng3 Qxf4 Nxe4 Qxe4 00:03:16.4 0,63 15 126837323 g6 Nh6+ Kg7 Qf3 Ne5 Bd4 exd5 Qxf7+ Kh8 f4 b4 fxe5 dxe5 Qf2 Nd7 Nf7+ Kg7 Nxd5 Bxd5 exd5 exd4 Rxd4 Qxc2+ Qxc2 Rxc2+ Kxc2 Rc8+ Kb3 Kxf7 in multivariation mode, its 4 best moves at fourteen ply are: 00:14:59.6 0,62 14 386245154 g6 Nh6+ Kg7 Qf3 Ne5 Bd4 exd5 Qxf7+ Kh8 f4 b4 fxe5 dxe5 Qf2 Rf8 Qg3 Bd6 Bxc5 Bxc5 Nxd5 Bxd5 exd5 Bxg1 Rxg1 00:14:59.6 0,00 14 444845108 Ne5 Bxc5 exf5 exf5 dxc5 f4 g6 Qh3 Nc4 fxg6 hxg6 Bxf7+ Kxf7 Qh7+ Kf8 Qh8+ Kf7 Qh7+ 00:14:59.6 -0,42 14 574544433 Kh8 Rg3 g6 Qh4 b4 Bxc6 Bxc6 Nxe7 Qxe7 Bd4+ e5 Bxc5 dxc5 Rh3 h5 Nd5 Bxd5 exd5 Rd8 00:14:59.6 -0,75 13 342828851 Nb4 Bxc5 Nxd5 Nxe7+ Qxe7 exd5 dxc5 Ne4 Kh8 d6 Qf8 Rge1 Kg8 d7 Rd8 Nc3 Gandalf 6 also likes 16..b4 for a short time but then quickly rejects it. In multivariation mode resolving the fail low takes a bit longer. With four best moves in multivariation mode, b4 is no longer in the top four after the fail low after about four minutes. Gandalf 6.01 multivariation: 02:06:52.1 0,57 14 609652644 g6 Nh6+ Kf8 Qh3 b4 Bxc5 dxc5 Bxc6 Bxc6 Ne2 Qe5 Rd2 Qxe4 Nxf7 Bd5 Qxh7 Bxa2 02:21:15.3 -0,19 14 996230893 Ne5 Bxc5 dxc5 Bxb7 Qxb7 Nxe7+ Qxe7 f4 Nc4 Rg4 g6 Qh6 Qf8 Qh3 Rd8 Rd3 Rxd3 Qxd3 01:47:43.9 -1,18 13 207014012 Kh8 g6 fxg6 Rxg6 Bf6 Bxc6 Bxc6 Rxf6 gxf6 Nxd6 Nxe4 Nf7+ Kg8 Rg1+ Kf8 Nh6 Ng5 Bxg5 fxg5 Rxg5 01:53:33.6 -1,28 13 333046892 Nb4 Nh6+ gxh6 g6 fxg6 Rxg6+ Kh8 Bd4+ e5 Qxh6 Bf6 Bxc5 Nxd5 exd5 Bg7 Rxg7 Qxg7 Qxd6 Rd8 Same order of moves as Gambit Fruit beta 4, but 14 ply takes lot more time in Gandalf's case! Not sure how that works with Gandalf exactly, because the nodenumbers do not differ very much, I see now. Maybe Gandalf count from zero for each move? Not sure..Crafty values 16..Kh8 a bit lower probably. Athlon 2009 MHz, 200 Mb HT Regards, Eelco
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