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Subject: Re: test position rook sacrifice tiger&crafty fastest

Author: Matthias Gemuh

Date: 14:54:03 12/24/01

Go up one level in this thread


On December 24, 2001 at 16:07:08, K. Burcham wrote:

>
>
>
>test position: rook sacrifice
>
>2x1533mhz
>
>Deep Junior7    11:44    RxB2    depth 24
>Deep Shredder    5:08    RxB2    depth 18
>Deep Fritz       3:24    RxB2    depth 18/37
>Crafty  17.14     :32    RxB2    depth 14/28
>Crafty  18.08    1.27    RxB2    depth 15/21
>
>
>1x1000mhz
>
>Gambit Tiger 2    :98    RxB2    depth 13
>Shredder5        7:34    RxB2    depth 18
>Deep Fritz       21:56   RxB2    depth 18/40
>
>
>
> [D] 8/pR4pk/1b6/2p5/N1p5/8/PP1r2PP/6K1 b - - 0 1
>


My HyLogicChess wants to play: (...Rxb2 after 6 seconds)

[1] (-0.71)  1 ...Rxg2 (00h:00m:00s)
[2] (0.45)  1 ...Kh8 2.h4 (00h:00m:00s)
[3] (0.12)  1 ...c3 2.bxc3 Rxg2 (00h:00m:00s)
[4] (0.44)  1 ...Rd1 2.Kf2 Rd2 3.Kf3 Kh8 4.h4 (00h:00m:00s)
[5] (0.43)  1 ...Kg6 2.Kf1 Kh6 3.h4 Bd8 (00h:00m:00s)
[6] (0.44)  1 ...Rd1 2.Kf2 (00h:00m:01s)
[7] (-1.37)  1 ...Rxb2 2.Nxb2 c3 3.Nc4 c2 (00h:00m:06s)
[8] (-1.68)  1 ...Rxb2 2.Nxb2 c3 3.Nd3 c4 4.Rxb6 axb6 5.Nb4 b5 (00h:00m:09s)
[9] (-1.68)  1 ...Rxb2 2.Nxb2 c3 3.Nd3 c4 4.Rxb6 (00h:00m:14s)
[10] (-1.65)  1 ...Rxb2 2.Nxb2 c3 3.Nd3 c4 4.Rxb6 axb6 5.Nb4 b5 6.a3 Kg8
(00h:00m:37s)
[11] (-1.65)  1 ...Rxb2 2.Nxb2 c3 3.Nd3 c4 4.Rxb6 (00h:01m:02s)
[12] (-0.30)  1 ...Rxb2 2.Nxb2 c3 3.Nd3 c4 4.Rxb6 cxd3 5.Rb7 c2 6.Rc7 Kh8 7.h4
(00h:10m:19s)



Regards,
Matthias.








>Analysis by Deep Junior 7:  2x1533mhz
>
>1...Bd8 2.Kf1 Bf6 3.h3 Kg6 4.g4 a5 5.Nc3
>  =  (0.12)   Depth: 15   00:00:01  1913kN
>1...Bd8 2.Kf1 Bf6 3.h3 Kg6 4.g4 Rh2 5.Nxc5 Bxb2 6.Ne4
>  =  (0.06)   Depth: 18   00:00:06  11396kN
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 a6
>  =  (0.01)   Depth: 20   00:00:24  50586kN, tb=3
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 Kg6 5.g4 a5 6.Nc3 Kg5
>  =  (-0.01)   Depth: 22   00:01:52  237288kN, tb=21
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 a6 5.h4 Kg6 6.Nc3 Rf2+ 7.Ke1 Kf5
>  =  (-0.03)   Depth: 23   00:04:10  524070kN, tb=96
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 a6 5.h4 Kg6 6.g4 a5 7.Nc3
>  =  (-0.06)   Depth: 24   00:08:10  1028013kN, tb=530
>1...Rxb2!
>  ³  (-0.33)   Depth: 24   00:11:44  1413274kN, tb=1485
>1...Rxb2! 2.Nc3 Rc2 3.Ne4 c3 4.Kf1 Rc1+
>  -+  (-1.81)   Depth: 24   00:38:22  853877kN, tb=10260
>
>Engine: Deep Shredder 2x1533mhz
>
> 11.01	 0:00 	-0.23 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Ra4 6.Kf2
>Rxc4 7.Rb7 (455.517) 677.8
> 12.01	 0:01 	-0.02 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.Kf2 Rxc3 6.Rc6
>g6 7.Rc7+ Kh6 (926.226) 714.1
> 13.01	 0:01 	+0.03 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Ra4 6.Rb7
>Rxc4 7.g3 Kg6 8.Rb6+ Kf5 (1.429.267) 731.8
> 14.01	 0:03 	+0.04 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.Kf2 Rxc3 6.Rc6
>Rc2+ 7.Kg3 c4 8.Kf3 c3 (2.582.508) 712.4
> 15.01	 0:06 	+0.03 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.Kf2 Rxc3 6.h4
>Rc4 7.Rc6 Rxh4 8.Rxc5 Kg6 9.Kg3 (4.449.207) 719.0
> 16.01	 0:19 	-0.05 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Rc2 5.Rc6 Rxc3 6.Kf2
>g5 7.h3 c4 8.g3 Rc1 9.Kf3 Rc3+ (13.178.537) 667.2
> 16.03	 1:43 	-0.04++ 	1...Bd8 2.Nxc5 c3 3.bxc3 Bb6 4.Kh1 Bxc5 5.Rc7 Rxa2 6.Rf7
>Kg6 7.Rc7 a6 8.g3 (65.396.198) 630.2
> 16.03	 4:58 	+0.05 	1...Bd8 2.Kf1 Bf6 3.h3 Kg6 4.g4 c3 5.Nxc3 Bxc3 6.bxc3 Rxa2
>7.Rc7 Rh2 (186.495.859) 624.0
> 16.06	 5:08 	+0.06++ 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Rh4+
>Kg8 7.Kf2 c2 8.Rc4 d2 9.Rc8+ (192.549.706) 624.9
> 16.06	 5:11 	+0.41++ 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Rh4+
>Kg8 7.Kh1 c2 8.g4 (194.860.437) 625.6
> 16.06	11:32 	+3.03 	1...Rxb2 2.Re7 Rxa2 3.Nc3 Ra3 4.Nd5 c3 5.Re2 c4+ 6.Kf1 Ra1+
>7.Re1 Rxe1+ 8.Kxe1 Bd4 9.Kd1 a5 10.Kc2 (480.848.256) 694.2
> 17.01	11:50 	+2.78-- 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 Kg6 6.Rxc4 c2
>7.Rxc2 Kf5 8.h4 Ke6 (494.667.156) 696.3
> 17.01	11:50 	+2.28-- 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 Kg6 6.Rxc4 c2
>7.Rxc2 Kf5 8.h4 g5 (494.723.340) 696.3
> 17.01	12:10 	+2.28 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Rh4+ Kg8
>7.Kh1 c2 8.Rc4 d2 9.Rc7 (510.468.077) 699.1
> 18.01	13:14 	+2.53++ 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Rh4+
>Kg8 7.g3 c2 8.Rc4 d2 9.Rh4 (560.377.977) 705.4
> 18.01	15:14 	+3.03++ 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Rh4+
>Kg8 7.g3 c2 8.Rc4 d2 (653.055.076) 713.8
>best move: Rd2xb2 time: 17:44.485 min  n/s: 721.059  CPU 197.9%  nodes:
>767.557.078  TB: 13.853
>
>
>
>Analysis by Deep Fritz: 2x1533mhz
>
>1...Kg6 2.Kf1 c3 3.bxc3 Rxa2 4.Nxb6 axb6 5.Rxb6+
>  ²  (0.41)   Depth: 6/13   00:00:00  17kN
>1...Bd8!
>  ²  (0.37)   Depth: 6/18   00:00:00  23kN
>
>1...Bd8 2.Rxa7 Bf6 3.Kf1 Bxb2 4.Nxb2 Rxb2 5.a4 c3 6.a5
>  =  (0.22)   Depth: 9/20   00:00:00  123kN
>1...c3!
>  =  (0.19)   Depth: 9/20   00:00:00  152kN
>
>1...Bd8 2.Kf1 Bf6 3.h3 Kg6 4.a3 a6 5.Ra7 Bxb2 6.Rxa6+ Kf5 7.Nxc5
>  =  (-0.09)   Depth: 14/28   00:00:07  9671kN
>1...Bd8 2.Kf1 Bf6 3.h3 Kg6 4.a3 Bd4 5.g4 Rh2 6.Rxa7 Rxh3 7.Re7
>  =  (-0.16)   Depth: 15/30   00:00:15  21101kN
>1...Bd8 2.Kf1 Bf6 3.h3 Kg6 4.g4 Rh2 5.Rxa7 Bxb2 6.Nxb2 Rxb2 7.Ra6+
>  =  (-0.16)   Depth: 16/33   00:00:31  41948kN
>
>1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Kf2 Rxc4 7.Re6
>  =  (-0.22)   Depth: 18/37   00:01:20  106470kN, tb=49
>1...Bd8!
>  =  (-0.25)   Depth: 18/37   00:02:54  231378kN, tb=62
>1...Rxb2!
>  ³  (-0.28)   Depth: 18/37   00:03:24  270622kN, tb=70
>1...Rxb2! 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Ke2
>  -+  (-2.56)   Depth: 18/37   00:11:34  919980kN, tb=109
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Ke2
>  -+  (-2.56)   Depth: 19/37   00:12:54  1017917kN, tb=116
>1...Rxb2!
>  -+  (-2.88)   Depth: 20/40   00:35:29  2764727kN, tb=233
>
>
>
>Analysis by Crafty 17.14: 2x1533mhz
>
>1...Kg6 2.Kf1 Rd6 3.Kf2 Rd2+ 4.Kf3 Rd6
>  ±  (0.74)   Depth: 6/14   00:00:01  30kN
>1...Kg6 2.Kf1 Kh6 3.h3 Rd6 4.Ke2 Kg6
>  ±  (0.71)   Depth: 7/16   00:00:01  76kN
>1...Kh6 2.Kf1 g5 3.Re7 Kh5 4.Rb7 Rd6
>  ²  (0.66)   Depth: 7/16   00:00:01  128kN
>1...Bd8 2.Rxa7 Bf6 3.Rf7 Bxb2 4.Nxb2 Rxb2 5.a4
>  ²  (0.49)   Depth: 7/16   00:00:01  192kN
>1...Bd8 2.Rxa7 Bf6 3.Kf1 Bxb2 4.Nxc5 c3 5.Rf7
>  ²  (0.46)   Depth: 8/17   00:00:01  250kN
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 Rf2+ 5.Ke1 Rh2 6.Rxa7 Bxb2 7.Nxb2 Rxb2 8.Ra5 c3
>9.Rxc5
>  =  (0.04)   Depth: 13/26   00:00:10  7618kN
>1...Bd8 2.h3 Bf6 3.a3 Kg6 4.Kh2 Be5+ 5.Kg1 Bd4+ 6.Kh2 a6 7.Kg3 Kf5 8.Rf7+ Ke6
>9.Rf4 Ke5
>  =  (-0.03)   Depth: 14/28   00:00:28  24668kN
>1...Rxb2
>  ³  (-0.43)   Depth: 14/28   00:00:32  28660kN
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb7 c2 6.Kf2 c1Q 7.Kf3 Qf1+ 8.Kg3 c3
>9.Na4
>  µ  (-1.10)   Depth: 14/28   00:00:42  38711kN
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb7 c2 6.Kf2 c1Q 7.Kf3 Qf1+ 8.Kg3 c3
>9.Na4
>  -+  (-1.50)   Depth: 15/32   00:01:03  57947kN
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Rh5+ Kg6 7.Rd5 c1Q+ 8.Nd1 c3
>9.Kf2 Qf4+ 10.Ke1
>  -+  (-1.71)   Depth: 15/32   00:01:41  94282kN
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.g4 c1Q+ 7.Kg2 Qb1 8.Kf3 c3
>9.Rh5+ Kg6 10.Nc4 c2
>  -+  (-1.95)   Depth: 16/32   00:02:32  140357kN, tb=11
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Rh5+ Kg6 7.Rd5 c1Q+ 8.Nd1 c3
>9.Rd6+ Kf5 10.Rd5+ Ke6 11.Rd8 c2 12.Re8+ Kd5
>  -+  (-2.03)   Depth: 17/32   00:04:01  224412kN, tb=62
>
>
>
>Analysis by Crafty 18.08: 2x1533
>
>
>1...Bd8 2.Rxa7 Bf6 3.Rf7 Bxb2 4.Nxb2 Rxb2 5.a4
>  ²  (0.48)   Depth: 7/14   00:00:01  158kN
>1...Bd8 2.Rxa7 Bf6 3.Rb7 Bd4+ 4.Kf1 Rf2+ 5.Ke1 Rxg2 6.h4
>  ²  (0.39)   Depth: 8/14   00:00:01  234kN
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 Rf2+ 5.Ke1 a6 6.h4 Rg2 7.Rb6 g6
>  =  (0.08)   Depth: 12/18   00:00:05  5555kN
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 Rf2+ 5.Ke1 Rh2 6.Kd1 Rh1+ 7.Kd2 Rxh3 8.Rxa7 Rxg3
>  =  (-0.08)   Depth: 13/20   00:00:13  16024kN
>1...Bd8 2.Kf1 Bf6 3.h3 Bd4 4.g3 a6 5.Rb6 Rf2+ 6.Ke1 Rh2 7.Rxa6 Bxb2 8.Nxb2 Rxb2
>9.Ra5 c3 10.Rxc5
>  =  (-0.16)   Depth: 15/21   00:01:01  79742kN
>1...Rxb2 ³
>(-0.56)   Depth: 15/21   00:01:27  114975kN
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.g4 c1Q+ 7.Kg2 c3 8.Rh5+ Kg6
>9.Nc4 Qc2+ 10.Kf3 Qxa2 11.Nxa5
>  -+  (-1.95)   Depth: 15/21   00:02:47  225631kN, tb=10
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.g4 c1Q+ 7.Kg2 c3 8.Rh5+ Kg6
>9.Nc4 Qc2+ 10.Kf3 Qxa2 11.Nxa5
>  -+  (-2.35)   Depth: 16/25   00:04:26  362276kN, tb=37
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.g4 c1Q+ 7.Kg2 c3 8.Rh5+ Kg6
>9.Nc4 Qc2+ 10.Kf3 Qxa2 11.Nxa5
>  -+  (-2.74)   Depth: 17/25   00:14:23  1202021kN, tb=529
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Kf3 c3 8.Nd3 Qd1+
>9.Ke3 Qd2+ 10.Kd4 c2 11.Rc5 Qxg2
>  -+  (-2.75)   Depth: 17/25   00:24:24  2058464kN, tb=590
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Kf3 c3 8.Nd3 Qd1+
>9.Ke3 Qd2+ 10.Kd4 c2 11.Rc5 Qxg2
>  -+  (-3.15)   Depth: 18/26   00:30:38  2581574kN, tb=894
>
>
>
>
>
>Gambit Tiger  1000mhz
>
>00:00:01.0	-0.02	11	531241	Bd8 Kf1 Bf6 h3 Kg6 a3 Bd4 g4 Rf2+ Ke1 a5
>00:00:03.6	0.08	12	1199267	Bd8 Kf1 Bf6 h3 Kg6 a3 Bd4 g4 Rh2 Ke1 a6 Rb6+ Kf7
>00:00:04.5	0.08	13	1283833	Bd8 Kf1
>00:00:05.5	0.98	13	1743760	Rxb2
>00:00:06.4	1.86	13	2158854	Rxb2 Nxb2 c3 Rxb6 c4 Rb4 a5 Rb5 c2 Kf2 c1Q Kf3 Qf1+
>Ke3 Qxg2 Nxc4 Qxa2 Nxa5
>00:00:11.4	2.16	14	3509741	Rxb2 Nxb2 c3 Rxb6 c4 Rb4 a5 Rb5 c2 Kf2 c1Q Rh5+ Kg6
>Rb5 c3 Rb6+ Kf5
>00:00:22.4	2.74	15	7241258	Rxb2 Nxb2 c3 Rxb6 c4 Rb4 a5 Rb5 c2 Kf2 c1Q Ke2 c3 Nc4
>Qc2+ Ke3 Qxa2 Nxa5 Qxg2
>00:01:18.1	3.06	16	24562175	Rxb2 Nxb2 c3 Rxb6 c4 Rb4 a5 Rb5 c2 Kf2 c1Q Kf3 c3
>Nd3 Qd1+ Ke3 c2 Rc5 Qg1+ Kd2
>00:01:52.8	3.06	17	35391878	Rxb2 Nxb2 c3 Rxb6 c4 Rb4 a5 Rb5 c2 Kf2 c1Q Kf3 c3
>Nd3 Qd1+ Ke3 c2 Rc5 Qg1+ Kd2
>00:04:18.3	3.06	18	81511234	Rxb2 Nxb2 c3 Rxb6 c4 Rb4 a5 Rb5 c2 Kf2 c1Q Kf3 c3
>Nd3 Qd1+ Ke3 c2 Rc5 Qg1+ Kd2
>
>
>shredder5   1000mhz
>
> 11.01	 0:01 	-0.23 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Kf2
>Rxc4 7.Rb7 (342.815) 326.1
> 12.01	 0:02 	-0.02 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.Kf2 Rxc3 6.Rc6
>c4 7.Rc7 Kg6 (721.430) 324.5
> 13.01	 0:03 	 0.00 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Rb7
>Kg6 7.Rb6+ Kh7 8.Rb7 (1.160.135) 331.7
> 14.01	 0:06 	+0.05 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.c4 Rc3 6.Kf2
>Rxc4 7.Rc6 Rc3 8.Ke2 Rc2+ 9.Kf3 g6 (2.113.034) 338.0
> 15.01	 0:10 	+0.03 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Ra3 5.Kf2 Rxc3 6.h4
>Rc4 7.Rc6 Rxh4 8.Rxc5 Kg6 9.Kg3 (3.472.581) 335.3
> 16.01	 0:29 	-0.05 	1...c3 2.bxc3 Rxa2 3.Nxb6 axb6 4.Rxb6 Rc2 5.Rc6 Rxc3 6.Kf2
>g5 7.h3 c4 8.g3 Rc1 9.Kf3 (9.413.176) 323.4
> 16.05	 4:01 	-0.04++ 	1...Bd8 2.Nxc5 c3 3.bxc3 Bb6 4.Kh1 (69.154.385) 286.6
> 16.05	 7:25 	 0.00 	1...Bd8 2.Kf1 Bf6 3.Nxc5 Rxb2 4.Rxb2 Bxb2 5.Ke2 Kg6 6.Nb7
>Be5 7.Na5 Kf5 (124.413.370) 279.3
> 16.06	 7:34 	+0.01++ 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Kf2
>axb4 7.h4 Kh6 8.a3 bxa3 (127.370.947) 280.2
> 16.06	 7:39 	+0.36++ 	1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Nd3 cxd3 6.Kf2
>axb4 7.h4 Kh6 8.a3 bxa3 (128.905.939) 280.4
> 16.06	21:27 	+3.03 	1...Rxb2 2.Re7 Rxa2 3.Nc3 Ra3 4.Nd5 c3 5.Re2 c4+ 6.Kf1 Ra1+
>7.Re1 Rxe1+ 8.Kxe1 Bd4 9.Kd1 (358.848.857) 278.7
> 17.01	24:00 	+3.11 	1...Rxb2 2.Nc3 Rc2 3.Ne4 Rc1+ 4.Kf2 c3 5.Ke2 c2 6.Kd2 Re1
>7.Ng5+ (401.726.372) 278.9
>best move: Rd2xb2 time: 28:17.934 min  n/s: 278.758  nodes: 473.313.098  TB:
>2.861
>
>
>
>Analysis by Deep Fritz: single processor 1000mhz
>
>1...Rxb2--
>  ±  (0.78)   Depth: 1/2   00:00:00
>1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.a3 a6 5.Rb6 Kf5 6.Nxc5 Bxb2 7.Rxa6
>  =  (-0.06)   Depth: 14/31   00:00:12  8715kN
>1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.g4 Rh2 5.Rxa7 Bxb2 6.Nxb2 Rxb2 7.a4
>  =  (-0.13)   Depth: 15/34   00:00:34  24203kN
>1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.g4 Rh2 5.Rxa7 Bxb2 6.Nxb2 Rxb2 7.a4
>  =  (-0.13)   Depth: 16/36   00:01:19  55555kN
>1...Bd8 2.h3 Bf6 3.Kf1 Kg6 4.g4 Rh2 5.Rxa7 Bxb2 6.Nxb2 Rxb2 7.Ra3
>  =  (-0.22)   Depth: 17/37   00:03:25  143598kN, tb=2
>1...Bd8 2.h3 Bf6 3.Kf1 Bd4 4.g4
>  ³  (-0.34)   Depth: 18/40   00:20:57  881765kN, tb=57
>1...Rxb2!
>  ³  (-0.38)   Depth: 18/40   00:21:56  923512kN, tb=67
>1...Rxb2! 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Ke2
>  -+  (-2.56)   Depth: 18/40   00:49:37  2063160kN, tb=101
>1...Rxb2 2.Nxb2 c3 3.Rxb6 c4 4.Rb4 a5 5.Rb5 c2 6.Kf2 c1Q 7.Ke2
>  -+  (-2.56)   Depth: 19/36   00:53:04  2209179kN, tb=120
>1...Rxb2!
>  -+  (-2.88)   Depth: 20/40   01:05:36  2744303kN, tb=222
>
>kburcham



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