Author: James Robertson
Date: 08:44:49 03/07/99
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On March 07, 1999 at 07:53:02, allan johnson wrote: >Hi I wonder if someone out there with Rebel10 could check how long it takes >to find the best move in the following position 2r1r1k1/pp1bb2p/3pppp1/q6n/ >4P1Q1/2N1BP1P/PPP1BP2/2KR2R1/ W...Bc5! ? On my pent mmx166 Rebel9 plays e4 e5 >for 55s (0.88) but then shifts to Bc5 with a score of 1.07 which while better >still undervalues the position.Admittedly it does manage to eventually find >the more accurate score after a couple of moves.The Rebel10 download however >spends 2.47min finding Bc5 and even then evaluates it at 0.87 for some time >I cant believe this to be a true reflection of Rebel10's strength and would >appreciate feedback.Could people with other programmes test the position on >their machines and tell me how they fare? >thanks Allan >ps There is quite a nice bishop sac in the winning combination which I would >like to know is completely sound Here are the moves from the position. >1Bc5 BxB 2QxN g5 3Bxg5! pxB 4Rxg5 BxR 5QxB and mate soon follows.Black can >try 1... RxN but believe me it doesn't work. Black can refrain from 2... g5 >but I cant see many realistic alternatives My program does not like the sacrifice, except only briefly: 1 -7 0 71 Kb1 2 1 0 927 Nd5 Bd8 3 23 60 5601 Nd5 f5 Nxe7+ Rxe7 4 23 280 27756 Nd5 f5 Nxe7+ Rxe7 5 34 660 83850 Nd5 Ng7 Nxe7+ Rxe7 Rxd6 Qxa2 6-> 33 2150 257591 Bb5 Bxb5 Qxh5 a6 Nxb5 axb5 6 33 2860 342711 Bb5 Bxb5 Qxh5 a6 Nxb5 axb5 7-> 76 11760 1501925 e5 Rxc3 bxc3 Kf7 Kb2 fxe5 a3 7 76 11870 1520087 e5 Rxc3 bxc3 Kf7 Kb2 fxe5 a3 8 67 21100 2698602 e5 Rxc3 bxc3 Kh8 exd6 Qa3+ Kb1 Bxd6 9 100 80200 10375136 e5 Kh8 exd6 Bf8 f4 f5 Qg2 Rc6 Bf3 10 91 190430 23970800 e5 Kh8 exd6 Bf8 Qe4 Bc6 Qd4 Rcd8 Qc5 Qxc5 Bxc5 11 99 832730 112011887 e5 Ng7 exd6 Bd8 Qd4 b6 b4 Qa3+ Kd2 a6 Bd3 James
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