Author: Ernst Walet
Date: 12:29:12 04/10/02
Go up one level in this thread
On April 07, 2002 at 14:30:41, Mike Hood wrote: >On April 07, 2002 at 13:45:40, Eduard Nemeth wrote: > >>Kramnik - Leko >> >>[D]2br1r2/1pR1Rp2/1p3k2/1B1p1Pp1/PP1P2P1/K7/8/8 w - - 0 1 >> >>1. a5!! >> >>This position is now today hard for all programs, or? >> >>Eduard > >It looks like a5 is a victim of tree pruning. I let Fritz 7 study this position >(infinite analysis) for an hour before I abandoned the search. Then I increased >the number of search lines to 12 (effectively forcing Fritz to consider a5), and >after about 15 minutes Fritz decided that a5 was the best move, but by a very >narrow margin. I testet F7 with standard settings and sel=0. New game 2br1r2/1pR1Rp2/1p3k2/1B1p1Pp1/PP1P2P1/K7/8/8 w - - 0 1 Analysis by Fritz 7: 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Ke3 Rd6 +- (2.03) Depth: 10/24 00:00:00 142kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Kf3 Kg7 6.Bd3 +- (2.03) Depth: 11/23 00:00:00 206kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Kf3 Kg7 6.Ke3 Kf6 +- (2.03) Depth: 12/24 00:00:00 394kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Kf3 Kg7 6.Ke3 Kf6 +- (1.94) Depth: 13/27 00:00:01 878kN 1.Kb3 Kg7 2.Bd7 Bxd7 3.Rexd7 Rxd7 4.Rxd7 Rh8 5.Rxd5 Rh4 6.Kc4 Rxg4 7.Rb5 Rg1 8.f6+ +- (1.72) Depth: 14/32 00:00:03 2284kN 1.Kb3! +- (2.00) Depth: 15/29 00:00:08 4958kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke3 Kf6 5.Kf2 Kg7 6.Kg2 Kf6 7.Kf3 +- (1.84) Depth: 16/32 00:00:13 8300kN 1.Kb3 Kg7 2.Bd7 Bxd7 3.Rexd7 Rxd7 4.Rxd7 Rh8 5.Rxd5 Rh4 6.Kc4 Rxg4 7.Rb5 Rg1 8.Rxb6 +- (1.94) Depth: 17/35 00:00:25 16801kN 1.Kb3 Kg7 2.Bd7 Bxd7 3.Rexd7 Rxd7 4.Rxd7 Rh8 5.Rxd5 Rh4 6.Kc4 Rxg4 7.Rb5 Rg1 8.Rxb6 +- (1.97) Depth: 18/37 00:00:49 32384kN 1.Kb3 Kg7 2.Bd7 Bxd7 3.Rexd7 Rxd7 4.Rxd7 Rh8 5.Rxd5 Rh4 6.Kc4 Rxg4 7.Rb5 Rg2 8.Rxb6 +- (2.22) Depth: 19/38 00:01:34 63164kN 1.Kb3-- +- (1.94) Depth: 20/33 00:01:53 76490kN 1.Kb3 +- (1.94) Depth: 20/41 00:02:43 109030kN 1.Kb3 Kg7 2.Bd7 Bxd7 3.Rexd7 Rxd7 4.Rxd7 Rh8 5.Rxd5 Rh4 6.Kc4 Rxg4 7.Rd6 Rf4 8.Rxb6 +- (1.84) Depth: 21/45 00:09:11 362021kN 1.Kb3! +- (2.13) Depth: 22/43 00:18:39 722629kN, tb=6 1.Kb3! +- (2.41) Depth: 23/45 00:37:31 1407251kN, tb=8 1.Kb3 Kg7 2.a5 Kf6 3.Re2 Rh8 4.axb6 Rdf8 5.Re5 Rd8 6.Re3 Rhf8 7.Rh3 Kg7 8.Bd3 +- (2.16) Depth: 24/47 01:30:38 3383950kN, tb=16 1.Kb2! +- (2.19) Depth: 24/47 01:39:52 3719269kN, tb=18 1.a5! +- (2.22) Depth: 24/47 02:17:16 4954876kN, tb=51 (Celeron 1200MHz, 832MB hash, 3, 4 and 5 piece EGTB's 10.04.2002) New game 2br1r2/1pR1Rp2/1p3k2/1B1p1Pp1/PP1P2P1/K7/8/8 w - - 0 1 Analysis by Fritz 7: (Sel=0) 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke3 Kf6 +- (2.03) Depth: 8/19 00:00:00 543kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Ke3 +- (1.97) Depth: 9/21 00:00:00 709kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Ke3 Rd6 +- (2.03) Depth: 10/23 00:00:03 2220kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Kd2 Kg7 +- (2.03) Depth: 11/29 00:00:09 7107kN 1.Kb3 Kg7 2.Kc3 Kf6 3.Kd3 Kg7 4.Ke2 Kf6 5.Kd2 Kg7 +- (2.03) Depth: 12/26 00:00:29 20901kN 1.a5! +- (2.06) Depth: 12/29 00:00:56 41650kN 1.a5! +- (2.22) Depth: 12/29 00:00:56 42106kN 1.a5 Kg7 2.axb6 Kf6 3.Ba4 Kg7 4.Rc5 Kf6 5.Rec7 Rh8 6.Bb3 Bd7 +- (2.47) Depth: 12/29 00:01:00 44629kN 1.a5 Kg7 2.axb6 Kf6 3.Ba4 Kg7 4.Bb3 Rd6 5.Rc5 Rxb6 6.Bxd5 Rd6 7.Rec7 +- (2.22) Depth: 13/32 00:01:32 69947kN 1.a5! +- (2.50) Depth: 14/32 00:02:58 134355kN 1.a5! +- (2.78) Depth: 14/32 00:03:09 141749kN 1.a5 Kg7 2.axb6 Kf6 3.Ba4 Kg7 4.Bb3 Rd6 5.Ka4 Kf6 6.Kb5 Rdd8 7.Kc5 Rde8 8.Rxe8 +- (2.84) Depth: 14/33 00:04:18 193974kN (Celeron 1200MHz, 832MB hash, 3, 4 and 5 piece EGTB's 10.04.2002) Ernst.
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