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Subject: Re: Does your engine can find a draw here ?

Author: John Merlino

Date: 15:04:35 11/27/04

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On November 27, 2004 at 14:44:21, Ricardo Rego wrote:

>Extract from a friend game...
>
>[FEN "8/ppR5/5kp1/4p3/3p4/3r1N2/4r1PK/8 b - - 0 0"]
>
>The game follows as:
>1... Rxf3 2. Rxb7 Rff2 3. Kh1 Rxg2 *
>
>Rb6+ (or Rf7) is draw !
>Pro Deo and Ruffian found both moves, but the score is 12 points (for black).
>
>Is there any engine that can score the final position (after Rb6+) as 'zero'
>(draw) ?
>
>TIA, Ricardo

Ok, it's true that after 3...Rxg2 it is a draw. But that certainly isn't best
play by Black (if that's what you are insinuating).

This can't be right, unless something is very wrong with both The King AND my
brain. After 1...Rxf3 2.Rxb7 Ra3, White is completely lost, no?

Time	Depth	Score	Positions	Moves
0:00	2/5	-11.96	5502		3.Rc7 a5 4.Rc5 Kf5 5.Kg1
0:00	3/6	-12.02	16407		3.Rc7 a5 4.Ra7 a4 5.Rd7 Kf5
0:00	3/7	-12.08	66482		3.Rc7 d3 4.Rc6+ Kf5 5.Rd6 e4 6.Kg3
					d2+ 7.Kh2 Rd3 8.Rxd3 exd3
0:00	3/8	-12.28	151109		3.Rc7 Raa2 4.Kh1 a5 5.Ra7 Kf5 6.Ra6
					Re1+ 7.Kh2
0:02	4/9	-12.81	528757		3.Rc7 d3 4.Rc1 Raa2 5.Rf1+ Ke6
					6.Kh3 Rxg2 7.Rc1 e4
0:06	5/10	-15.65	1606399		3.Rc7 d3 4.Rc1 d2 5.Rf1+ Ke7 6.Rd1
					Rd3 7.Ra1 d1=Q 8.Rxd1 Rxd1 9.Kg3
0:12	5/10	-13.87	2998873		3.Rb8 d3 4.Rf8+ Kg5 5.Rf3 d2 6.Rxa3
					d1=Q 7.Rg3+ Kf5 8.Rf3+ Ke4 9.Ra3
					Qf1
0:26	6/11	-16.11	6471728		3.Rb8 Raa2 4.Rf8+ Kg5 5.Kh1 d3
					6.Rd8 d2 7.Rd7 Ra1+ 8.Kh2 a5 9.Kg3
					Rf1 10.Rxd2 Rxd2
0:33	6/11	-13.95	8386335		3.Rb1 d3 4.Rf1+ Kg5 5.Rf3 d2 6.Rxa3
					d1=Q 7.Rg3+ Kf6 8.Rf3+ Ke7 9.Rg3
					Qd4 10.Ra3
1:09	7/12	-16.14	18388412	3.Rb1 Raa2 4.Rf1+ Kg5 5.Rg1 d3
					6.Rd1 d2 7.Kg3 Re1 8.Rxd2 Rxd2
					9.Kh3 a5
3:06	8/13	-18.49	51428146	3.Rb1 d3 4.Rf1+ Kg5 5.Rf3 e4 6.Rf1
					d2 7.Rd1 Kg4 8.Rf1 Rh3+ 9.Kg1 Rg3
					10.Kh1 Re1 11.Kh2 d1=Q
10:18	9/14	-20.32	178528239	3.Rb1 d3 4.Rf1+ Kg5 5.Rf3 e4 6.Rh3
					Kf5 7.Rh4 d2 8.Rh7 Kg5 9.Rh3 Rxh3+
					10.Kxh3 d1=Q 11.Kh2

jm



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