A nice endgame position

[playjunior]

...From Kasparov-Andersson (guess who won )

[d]4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - - 0 38

Here Kasparov plays 38.Re5!!, and after exchange the pawn ending is won for white. If black does not exchange-white checks on 7-th rank and wins effortlessly as well.

I would be really surprised if any engines finds this in reasonable time.

Code: Select all

7845: Kasparov,G - Andersson,U, World Cup Reykjavik 1988
4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - - 0 1

Analysis by Fritz 10:
...
38.Rc3 h6 39.gxh6 Rh8 40.Rb3+ Kc6 41.Ra3 Kb7 42.Rd3 Kc7 43.Ra3 
  +/-  (1.05)   Depth: 19/38   00:01:36  152mN
38.Rc3 h6 39.gxh6 Rh8 40.Rb3+ Kc6 41.Ra3 Kb7 42.Rd3 Kc7 
  +/-  (1.05)   Depth: 20/48   00:03:54  371mN

Code: Select all

Analysis by bright-0.3a:
...
38.Rc3 Re6 39.Kc2 f6 40.gxf6 Rxf6 41.Kd3 a5 42.Rc2 Rf7 43.Ke4 Rc7 44.Rxc7+ Kxc7 45.f5 gxf5+ 46.Kxf5 Kc6 47.a3 Kc5 48.a4 Kc4 49.e4 h5 50.e5 
  +/-  (1.09)   Depth: 20/42   00:00:54  153mN
38.Rc3 Re6 39.Kc2 f6 40.gxf6 Rxf6 41.Kd3 a5 42.Rc2 Rf7 43.Ke4 Rc7 44.Rxc7+ Kxc7 45.f5 gxf5+ 46.Kxf5 Kd6 47.e4 h5 48.e5+ Ke7 49.b3 h4 50.Kf4 
  +/-  (1.11)   Depth: 21/42   00:01:46  309mN
38.Rc3 Re6 39.Kc2 f6 40.gxf6 Rxf6 41.Kd3 a5 42.Rc2 a4 43.a3 Kb6 44.Rc4 Kb5 45.Rb4+ Ka5 46.Rb7 h5 47.Kd4 Rb6 48.Ra7+ Kb5 49.Kd5 Rc6 50.Rb7+ Rb6 
  +/-  (1.12)   Depth: 22/49   00:05:26  941mN

Code: Select all

Analysis by Toga II 1.4 beta5c:


38.Rc3 Rh8 39.Rc4 h5 40.gxh6 Rxh6 41.Re4 Kb6 42.Re7 f5 43.Kc2 Rh2+ 44.Kc3 Re2 45.Re6+ Kc7 46.a4 Kd7 47.Kd3 Kxe6 48.Kxe2 Kd5 49.Kd3 Kc5 50.Kc3 Kd5 51.b4 Ke4 52.Kd2 Kd5 53.Kd3 a6 
  +/-  (1.28)   Depth: 26/61   00:15:36  1994mN

Note guys that Kasparov had planned all this well before, but if I rewind 4-5 moves back I think it would be too unfair to the engines

[F. Bluemers]

it is hard indeed,shredder 9 ,before and after forcing Re5:

Code: Select all

4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - -

Shredder 9 UCI
 14/26	 0:01 	+1.52 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Rd6+ 5.Ke2 Re6 6.Rc2 h6 7.Kd3 (1.038.450) 699
 15/28	 0:02 	+1.34 	1.Rc3 f6 2.gxf6 Rf8 3.e4 Rxf6 4.Rf3 h5 5.Kc2 Kc6 6.Kd3 g5 7.f5 Kd6 (1.643.256) 725
 16/33	 0:03 	+1.41 	1.Rc3 f6 2.gxf6 Rf8 3.e4 Rxf6 4.Rf3 Kc6 5.Kc2 Kc5 6.Kc3 a5 7.b3 h5 (2.698.055) 737
 17/32	 0:05 	+1.43 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Rc6 5.e4 Rxc3+ (4.146.411) 747  TB:3
 18/38	 0:07 	+1.47 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 h5 5.Rc2 Rc6 6.Re2 Rd6+ 7.Ke4 Kc6 8.Ke5 Rd5+ 9.Kf6 Rd6+ 10.Kg5 (6.025.022) 760  TB:17
 19/40	 0:12 	+1.48 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Ra6 5.a3 Rc6 6.e4 h5 7.e5 (9.690.547) 761  TB:69
 20/42	 0:22 	+1.49 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Rd6+ 5.Ke2 Rb6 6.Rc2 Rc6 7.Rd2 Kc7 8.Kf3 Rd6 9.Rh2 h5 (16.944.625) 737  TB:294
 21/40	 0:42 	+1.56 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Rd6+ 5.Ke2 Rb6 6.Rc2 Rc6 7.Rd2 Kc7 8.Kf3 Rd6 9.Rc2+ Kd7 10.e4 h6 (29.070.569) 692  TB:1.093
 22/42	 1:12 	+1.49 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Rd6+ 5.Ke2 Rb6 6.Rc2 Rc6 7.Rd2 Kc7 8.Kf3 Rd6 9.Rc2+ Kd7 10.e4 Rd1 11.b3 Kd6 (46.429.738) 636  TB:3.691
 23/42	 2:53 	+1.65 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 h5 5.Rc1 Rd6+ 6.Ke4 Ra6 7.a3 (106.991.702) 615  TB:8.917
 24/48	 5:01 	+1.68 	1.Rc3 f6 2.gxf6 Rf8 3.Kc2 Rxf6 4.Kd3 Rd6+ 5.Ke4 Rd2 6.Rb3+ Kc6 7.Ke5 Rd5+ 8.Kf6 Rf5+ 9.Kg7 g5 10.fxg5 Rxg5+ 11.Kxh7 Rg2 12.a4 Rg4 13.a5 Rg3 (181.865.634) 604  TB:20.957
best move: Rc5-c3 time: 8:00.375 min  n/s: 596.247  CPU 83.1%   n/s(1CPU): 717.505  nodes: 286.404.123 TB: 44.479

                   ### 1. Rc5-e5 ###

4r3/pk3p1p/6p1/4R1P1/5P2/4P3/PP6/1K6 b - -

Shredder 9 UCI
 18/24	 0:01 	-0.43++	1...Rxe5 2.fxe5 (1.311.406) 839  TB:1
 18/24	 0:01 	-0.40 	1...Rxe5 2.fxe5 Kc6 3.a4 Kd5 4.a5 Kc4 5.Kc2 Kb4 6.Kd2 Kxa5 7.Kc3 Kb5 8.b4 Kb6 (1.487.106) 857  TB:1
 19/30	 0:02 	-0.27 	1...Rxe5 2.fxe5 Kc6 3.a4 Kd5 4.a5 Kc4 5.Kc2 Kb4 6.b3 Kxa5 7.Kc3 Kb6 8.Kc4 Kc6 9.b4 a6 10.e4 Kb6 11.Kd3 Kc6 12.Kd4 (2.065.825) 881  TB:7
 20/34	 0:02 	-0.52--	1...Rxe5 2.fxe5 (2.559.845) 871  TB:10
 20/34	 0:03 	-0.52 	1...Rxe5 2.fxe5 Kc6 3.a4 Kd5 4.a5 Kc4 5.Kc2 Kb4 6.Kd3 Kb3 7.Kd4 Kxb2 8.Kc4 (2.885.130) 879  TB:16
 21/41	 0:05 	-0.76 	1...Rxe5 2.fxe5 Kc6 3.a4 Kc5 4.Kc2 Kb4 5.Kd3 (5.061.673) 887  TB:126
 22/44	 0:08 	-1.01--	1...Rxe5 2.fxe5 (7.555.080) 858  TB:304
 22/44	 0:10 	-1.08 	1...Rxe5 2.fxe5 Kc6 3.a4 Kc5 4.Kc2 Kd5 5.a5 Kc4 6.Kd2 a6 7.e4 Kd4 8.b3 Kxe5 9.b4 Kd6 10.Kd3 (9.591.378) 885  TB:477
 23/42	 0:14 	-1.33--	1...Rxe5 2.fxe5 (12.616.904) 850  TB:650
 23/42	 0:17 	-1.38 	1...Rxe5 2.fxe5 Kc6 3.a4 Kc5 4.Kc2 Kd5 5.a5 Kc4 6.Kd2 a6 7.e4 Kd4 8.b3 Kxe5 9.b4 Kd6 10.Kc3 Kd7 11.Kd4 Kd6 12.Kc3 Kd7 13.Kd4 Kd6 14.Kc3 (15.173.397) 845  TB:1.172
 24/44	 0:28 	-1.38 	1...Rxe5 2.fxe5 Kc6 3.a4 Kc5 4.Kc2 Kd5 5.a5 Kc4 6.Kd2 a6 7.e4 Kd4 8.b3 Kxe5 9.b4 Kd6 10.Kc3 Kd7 11.Kd4 Kd6 12.Kc4 (22.766.366) 813  TB:2.607
 25/47	 0:47 	-1.62 	1...Rxe5 2.fxe5 Kc6 3.a4 Kc5 4.Kc2 Kd5 5.a5 Kc4 6.Kd2 Kb3 7.Kd3 (38.495.498) 810  TB:4.519
 26/49	 1:41 	-1.62 	1...Rxe5 2.fxe5 Kc6 3.a4 Kd5 4.a5 Kc5 5.Kc2 Kc4 6.Kd2 Kb4 7.Kd3 (78.339.707) 772  TB:12.414
 27/51	 2:29 	-1.87--	1...Rxe5 2.fxe5 (109.383.793) 732  TB:18.342
 27/51	 3:09 	-1.95 	1...Rxe5 2.fxe5 Kc6 3.a4 Kd5 4.a5 Kc5 5.Kc2 Kc4 6.Kd2 Kb4 7.Kd3 (138.180.667) 729  TB:25.203
best move: Re8xe5 time: 4:18.297 min  n/s: 701.030  CPU 85.0%   n/s(1CPU): 824.741  nodes: 181.062.778 TB: 30.565

Best
Fonzy

[Marc MP]

...From Kasparov-Andersson (guess who won )

[d]4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - - 0 38

Here Kasparov plays 38.Re5!!, and after exchange the pawn ending is won for white. If black does not exchange-white checks on 7-th rank and wins effortlessly as well.

I would be really surprised if any engines finds this in reasonable time.

Code: Select all

7845: Kasparov,G - Andersson,U, World Cup Reykjavik 1988
4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - - 0 1

Analysis by Fritz 10:
...
38.Rc3 h6 39.gxh6 Rh8 40.Rb3+ Kc6 41.Ra3 Kb7 42.Rd3 Kc7 43.Ra3 
  +/-  (1.05)   Depth: 19/38   00:01:36  152mN
38.Rc3 h6 39.gxh6 Rh8 40.Rb3+ Kc6 41.Ra3 Kb7 42.Rd3 Kc7 
  +/-  (1.05)   Depth: 20/48   00:03:54  371mN

Code: Select all

Analysis by bright-0.3a:
...
38.Rc3 Re6 39.Kc2 f6 40.gxf6 Rxf6 41.Kd3 a5 42.Rc2 Rf7 43.Ke4 Rc7 44.Rxc7+ Kxc7 45.f5 gxf5+ 46.Kxf5 Kc6 47.a3 Kc5 48.a4 Kc4 49.e4 h5 50.e5 
  +/-  (1.09)   Depth: 20/42   00:00:54  153mN
38.Rc3 Re6 39.Kc2 f6 40.gxf6 Rxf6 41.Kd3 a5 42.Rc2 Rf7 43.Ke4 Rc7 44.Rxc7+ Kxc7 45.f5 gxf5+ 46.Kxf5 Kd6 47.e4 h5 48.e5+ Ke7 49.b3 h4 50.Kf4 
  +/-  (1.11)   Depth: 21/42   00:01:46  309mN
38.Rc3 Re6 39.Kc2 f6 40.gxf6 Rxf6 41.Kd3 a5 42.Rc2 a4 43.a3 Kb6 44.Rc4 Kb5 45.Rb4+ Ka5 46.Rb7 h5 47.Kd4 Rb6 48.Ra7+ Kb5 49.Kd5 Rc6 50.Rb7+ Rb6 
  +/-  (1.12)   Depth: 22/49   00:05:26  941mN

Code: Select all

Analysis by Toga II 1.4 beta5c:


38.Rc3 Rh8 39.Rc4 h5 40.gxh6 Rxh6 41.Re4 Kb6 42.Re7 f5 43.Kc2 Rh2+ 44.Kc3 Re2 45.Re6+ Kc7 46.a4 Kd7 47.Kd3 Kxe6 48.Kxe2 Kd5 49.Kd3 Kc5 50.Kc3 Kd5 51.b4 Ke4 52.Kd2 Kd5 53.Kd3 a6 
  +/-  (1.28)   Depth: 26/61   00:15:36  1994mN

Note guys that Kasparov had planned all this well before, but if I rewind 4-5 moves back I think it would be too unfair to the engines

Hi Andranik,

This looks indeed as quite difficult for engines right now. In my opinion, one of the best kept secret among engine strentgh for endings is about Chess Tiger. Forget about the name, its Tiger for endings! Here are the results I get (from Chess Tiger 2007 - normal style) on an (obselete for this forum...) pentium 4 2.4ghz..:

Code: Select all

<snip>
00:01:24.5	1.38	22	68815789	Rc3 f6 gxf6 Re6 Rb3+ Kc7 f7 Rf6 Kc2 Rxf7 Ra3 Kb6 Kd3 Rd7+ Ke2 Rc7 b3 Rc2+ Kd3 Rf2 Kd4 Re2 e4 

00:02:29.8	1.36	23	118739384	Rc3 Re6 Rb3+ Kc7 Ra3 Kb7 Kc2 f6 gxf6 Rxf6 Kd3 h5 Ke4 Re6+ Kf3 Rb6 b3 Ra6 

00:05:10.7	1.33	24	247669439	Rc3 Re6 Rb3+ Kc7 Ra3 Kb7 Kc2 f6 Rb3+ Kc7 gxf6 Rxf6 Ra3 Kb6 Kd3 Rd6+ Ke2 Rc6 Kd2 Rd6+ Ke2 Rc6 Kd2 Rd6+ Ke2 Rc6 Kd2 Rd6+ Ke2 

00:08:52.4	1.38	25	427780899	Rc3 Re6 Kc2 f6 gxf6 Rxf6 Kd3 Rd6+ Ke4 Rd2 Rb3+ Kc6 Ke5 h5 Kf6 h4 e4 Rf2 Kg5 Kd6 Kxh4 Rxf4+ Kg5 Rxe4 

00:14:35.9	1.37	26	687564471	Rc3 Re6 Kc2 f6 gxf6 Rxf6 Kd3 Rd6+ Ke4 Rd2 Rb3+ Kc6 Ke5 h5 Kf6 h4 e4 Rf2 Kg5 Kd6 Rd3+ Kc6 Kxh4 Rxf4+ Kg5 Rf2 Ra3 Rxb2 

00:27:18.0	1.39	27	1296056645	Rc3 Re6 Kc2 f6 gxf6 Rxf6 Kd3 Rd6+ Ke2 Ra6 a3 Rc6 Kf3 h5 Rd3 Kc7 

00:46:00.6	1.39	28	2146047537	Rc3 Re6 Kc2 f6 gxf6 Rxf6 Kd3 Rd6+ Ke2 Rb6 Rc2 Rc6 Rd2 Kc7 Kf3 Rd6 Rh2 h5 Rg2 Kd7 e4 Rf6 

01:06:44.8	2.29	28	3133817448	Re5 Rxe5 fxe5 Kc6 e6 fxe6 Kc2 Kd5 Kd3 Ke5 a4 Kd5 b4 Ke5 Kc4 Ke4 a5 Ke5 Kc5 Ke4 Kd6 

01:06:47.5	2.29	28	3136466448	Re5 Rxe5 fxe5 Kc6 e6 fxe6 Kc2 Kd5 Kd3 Ke5 a4 Kd5 b4 Ke5 Kc4 Kd6 Kd4 Kc6 Ke5 Kd7 Kf6 Kd6 Kg7 
[quote][/quote]

I have the "endgame turbo 3" by Chessbase (or in fact the equivalent) enabled (all3-4mens, plus some 5mens - my EGTB is 700M). Who says better?


PS: The only (severe in fact), shortcoming about Chess Tiger 2007's endgames abilities are its lack of perpetual check recognition... luckily here no perpetual are in sight, but it often appear in endgames...

[Ignacio]

Zappa on my Quad with 5-men and some 6-men

Analysis by Zappa Mexico II:

1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 Ta6
± (1.36) Profundidad: 10/20 00:00:01 262kN
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 Ta6
± (1.36) Profundidad: 10/20 00:00:01 299kN
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd2 Tb6 5.b3
± (1.29) Profundidad: 11/22 00:00:01 495kN
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd2 Tb6 5.b3
± (1.29) Profundidad: 11/24 00:00:01 619kN
1.Tc3 Te6 2.Td3 Rc6 3.Rc2 f6 4.gxf6 Txf6 5.Td8 Tf7
± (1.33) Profundidad: 12/25 00:00:01 999kN
1.Tc3 Te6 2.Td3 Rc6 3.Rc2 f6 4.gxf6 Txf6 5.Td8 Tf7
± (1.33) Profundidad: 12/25 00:00:01 1123kN
1.Tc3 Te6 2.Td3 Rc6 3.Rc2 f6 4.gxf6 Txf6 5.Td8 h5 6.Tc8+
± (1.23) Profundidad: 13/25 00:00:02 1988kN
1.Tc3 Te6 2.Td3 Rc6 3.Rc2 f6 4.gxf6 Txf6 5.Td8 h5 6.Tc8+
± (1.23) Profundidad: 13/27 00:00:03 2717kN
1.Tc3 Te6 2.Td3 Rc6 3.Rc2 f6 4.gxf6 Txf6 5.Td8 Td6 6.Tc8+ Rd5 7.Tc7
± (1.08) Profundidad: 14/27 00:00:04 4191kN
1.Tc3 Te6 2.Td3 Rc6 3.Rc2 f6 4.gxf6 Txf6 5.Td8 Td6 6.Tc8+ Rd5 7.Tc7
± (1.08) Profundidad: 14/29 00:00:06 6261kN
1.Tc3 Te6 2.Td3 Rc7 3.Rc2 f6 4.Tc3+ Rb7 5.Tb3+ Rc7 6.Ta3 Rb6 7.b3 fxg5 8.fxg5 Txe3
± (1.07) Profundidad: 15/30 00:00:09 10501kN
1.Tc3 Te6 2.Td3 Rc7 3.Rc2 f6 4.Tc3+ Rb7 5.Tb3+ Rc7 6.Ta3 Rb6 7.b3 fxg5 8.fxg5 Txe3
± (1.07) Profundidad: 15/30 00:00:12 13622kN
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Ta6 6.a3 Tb6 7.Tc2 Tc6
± (1.23) Profundidad: 16/36 00:00:17 20839kN
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Ta6 6.a3 Tb6 7.Tc2 Tc6
± (1.23) Profundidad: 16/36 00:00:20 24329kN
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Ta6 6.a3 Tb6 7.Tc2 a5 8.Rd5
± (1.23) Profundidad: 17/41 00:00:32 37723kN, tb=1
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Ta6 6.a3 Tb6 7.Tc2 a5 8.Rd5
± (1.23) Profundidad: 17/41 00:00:38 45489kN, tb=1
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 Ta6 5.a3 Tb6 6.Tc2 h5 7.Re4 Tc6 8.Td2 Rc7
± (1.35) Profundidad: 18/41 00:00:57 69172kN, tb=1
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 Ta6 5.a3 Tb6 6.Tc2 h5 7.Re4 Tc6 8.Td2 Rc7
± (1.35) Profundidad: 18/41 00:01:09 84334kN, tb=4
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Tb6 6.Tc2 Tc6 7.Td2 Te6+ 8.Rf3 Rc6 9.e4 Td6
± (1.34) Profundidad: 19/48 00:01:44 123mN, tb=12
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Tb6 6.Tc2 Tc6 7.Td2 Te6+ 8.Rf3 Rc6 9.e4 Td6
± (1.34) Profundidad: 19/48 00:02:15 159mN, tb=23
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Tb6 6.Tc2 Tc6 7.Td2 Te6+ 8.Rf3 Rc6 9.e4 Td6
± (1.34) Profundidad: 20/57 00:03:21 229mN, tb=29
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Tb6 6.Tc2 Tc6 7.Td2 Te6+ 8.Rf3 Rc6 9.e4 Td6
± (1.34) Profundidad: 20/57 00:04:25 297mN, tb=47
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Tb6 6.Tc2 Tc6 7.Th2 Rb6 8.f5 gxf5+ 9.Rxf5 Tc5+ 10.Rf4 Ta5 11.b3
± (1.36) Profundidad: 21/57 00:07:30 493mN, tb=96
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Re4 Tb6 6.Tc2 Tc6 7.Th2 Rb6 8.f5 gxf5+ 9.Rxf5 Tc5+ 10.Rf4 Ta5 11.b3
± (1.36) Profundidad: 21/57 00:09:41 630mN, tb=221
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Rd4 Tf5 6.Tc2 h4 7.Re4 Ta5 8.a3 Th5 9.Rf3 Rb6 10.e4
+- (1.41) Profundidad: 22/63 00:15:50 981mN, tb=280
1.Tc3 Te6 2.Rc2 f6 3.gxf6 Txf6 4.Rd3 h5 5.Rd4 Tf5 6.Tc2 h4 7.Re4 Ta5 8.a3 Th5 9.Rf3 Rb6 10.e4
+- (1.41) Profundidad: 22/63 00:20:47 1246mN, tb=589
1.Tc3 Th8 2.Rc2 h5 3.gxh6 Txh6 4.Rd3 Th5 5.Tc4 Rb6 6.Tc2 Td5+ 7.Re2 Th5 8.e4 g5 9.Rf3 gxf4 10.Rg4 Ta5 11.b3 f6 12.Rxf4 a6 13.Td2
+- (1.53) Profundidad: 23/65 00:47:05 2917mN, tb=1504
1.Te5 Tf8 2.Te7+ Rb6 3.Rc2 a5 4.Rc3 Rc6 5.Rd4 a4 6.Ta7 Tb8 7.Txa4 Txb2 8.Ta7 Rd6 9.Txf7 Txa2 10.Txh7 Ta4+ 11.Rd3 Re6 12.Tc7 Rf5 13.Tc5+
+- (2.74) Profundidad: 23/65 01:08:37 4543mN, tb=4277

[playjunior]

Yeah, that's great it finds it, although 47 minutes on a quad is a bit too much to evaluate a pawn ending

[Ignacio]

DF 10 needs 19:25 to find it.

Analysis by Deep Fritz 10:

1.Tc3 h6
± (1.21) Profundidad: 9/23 00:00:00 147kN
1.Tc3 h6 2.gxh6
± (1.18) Profundidad: 9/25 00:00:00 174kN
1.Te5
± (1.18) Profundidad: 9/25 00:00:00 223kN
1.Te5
± (1.34) Profundidad: 9/25 00:00:00 238kN
1.Te5 Txe5 2.fxe5 Rc6 3.b4 Rd5 4.Rc2 Rxe5 5.Rd3 f6
± (1.38) Profundidad: 9/25 00:00:00 264kN
1.Te5 Txe5 2.fxe5 Rc6 3.b4 Rd5 4.Rc2 Rxe5 5.Rd3 f6
± (1.38) Profundidad: 10/16 00:00:00 300kN
1.Te5 Txe5
± (1.09) Profundidad: 11/21 00:00:00 450kN
1.Te5 Txe5 2.fxe5 Rc6 3.e4
± (1.04) Profundidad: 11/34 00:00:00 648kN
1.Tc3
± (1.04) Profundidad: 11/34 00:00:00 763kN
1.Td5
± (1.05) Profundidad: 11/34 00:00:00 1072kN
1.Td5 Rc7 2.Td3 h5 3.gxh6 Th8 4.Ta3 Rb7 5.Tb3+ Rc6
± (1.04) Profundidad: 12/24 00:00:00 1598kN
1.Td5 Rc7 2.Td3 h5 3.gxh6 Th8 4.Ta3 Rb7 5.Tb3+ Rc6 6.Rc2
± (1.04) Profundidad: 13/25 00:00:01 2603kN
1.Tc3
± (1.05) Profundidad: 13/25 00:00:01 2735kN
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 Th2 5.Tb3+ Ra8 6.e4 Th4
± (1.11) Profundidad: 13/29 00:00:01 2906kN
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 Th2 5.Tc2 Txc2 6.Rxc2 Rc6 7.e4 f6 8.b4 g5 9.fxg5
± (1.05) Profundidad: 14/25 00:00:01 4749kN
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.e4 fxe4+ 6.Rxe4 Th2 7.Tb3+ Rc6 8.Tg3 Te2+ 9.Rd3 Te6
± (1.05) Profundidad: 15/28 00:00:02 9076kN
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.e4 fxe4+ 6.Rxe4 Th2 7.Tb3+ Rc6 8.Tg3 Te2+ 9.Rd3 Te6 10.b4
± (1.07) Profundidad: 16/30 00:00:05 19080kN, tb=1
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.e4 Th4 6.Re3 fxe4 7.Tc2 Th1
± (1.05) Profundidad: 17/31 00:00:09 36354kN, tb=7
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.e4 Th4 6.Re3 fxe4 7.Tc2 Th1 8.Rxe4 Te1+ 9.Rd5 Tf1 10.Re5 a6
± (1.05) Profundidad: 18/31 00:00:16 72266kN, tb=24
1.Tc3 h6 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.e4 Th4 6.Re3 fxe4 7.Tc2 Th1 8.Rxe4 Te1+ 9.Rd5 Tf1 10.Re5 Rb6 11.b4
± (1.05) Profundidad: 19/38 00:00:32 155mN, tb=225
1.Tc3 h6 2.gxh6 Th8 3.Tb3+ Rc6 4.Ta3 Rb6 5.Td3 Rc7 6.e4 Txh6
± (1.03) Profundidad: 20/39 00:01:09 339mN, tb=893
1.Tc3 h6 2.gxh6 Th8 3.Tc5 Txh6 4.Te5 Rb6 5.Rc2 a5 6.Te7 f5 7.Te6+ Rc5 8.Te5+ Rb6 9.Rc3 Th3 10.a3
± (1.13) Profundidad: 21/42 00:03:08 946mN, tb=4112
1.Tc3 h6 2.gxh6 Th8 3.Tc5 Txh6 4.Te5 f6 5.Te7+ Rb8 6.Tg7 Th1+ 7.Rc2 Th2+ 8.Rc3 Te2 9.Txg6
± (1.18) Profundidad: 22/50 00:05:28 1751mN, tb=10188
1.Tc3 h6 2.gxh6 Th8 3.Tc5 f6 4.Rc2 Txh6 5.Rd3 f5 6.Te5 Th2 7.Te7+ Rc6 8.Te6+ Rc7 9.Txg6 Txb2
± (1.21) Profundidad: 23/50 00:14:44 4433mN, tb=30001
1.Te5
± (1.22) Profundidad: 23/74 00:19:25 6003mN, tb=54511
1.Te5
± (1.38) Profundidad: 23/74 00:19:40 6087mN, tb=55037
1.Te5
+- (1.69) Profundidad: 23/74 00:20:05 6235mN, tb=55924
1.Te5
+- (2.31) Profundidad: 23/74 00:22:19 6971mN, tb=58175
1.Te5 Tf8 2.Rc2 Rc6 3.b4 a6 4.Te7
+- (2.54) Profundidad: 23/74 00:30:23 9600mN, tb=94613

[smirobth]

Hiarcs 11.1 MP needed a little over 6 minutes on my quad.

Analysis by HIARCS 11.1 MP UCI:

+- (1.43) Depth: 16/36 00:00:06 9139kN, tb=4
38.Rc3 Rh8 39.Kc2 h5 40.gxh6 Rxh6 41.Kd3 f5 42.Rc2 Rh8 43.e4 Rd8+ 44.Ke3 fxe4 45.Kxe4 a5 46.Rg2 Rd6 47.Rg5 Kb6
+- (1.43) Depth: 17/36 00:00:12 17621kN, tb=12
38.Rc3 Rh8 39.Kc2 h5 40.gxh6 Rxh6 41.Kd3 f5 42.Rc2 Rh8 43.e4 Rd8+ 44.Ke3 fxe4 45.Kxe4 Kb6 46.Rg2 Rd6 47.Rg5 Kc7 48.Rc5+ Kb6
+- (1.44) Depth: 18/40 00:00:26 39012kN, tb=42
38.Rc3 Rh8 39.Kc2 h5 40.gxh6 Rxh6 41.Kd3 f5 42.b3 Kb6 43.Rc1 a5
+/- (1.33) Depth: 19/40 00:00:55 82521kN, tb=357
38.Rc3 Rh8 39.Kc2 h5 40.gxh6 Rxh6 41.Kd3 f5 42.b4 Rh1 43.Kd4 Kb6 44.Ke5 Ra1 45.Kf6 Rxa2 46.Kxg6 a5 47.Kxf5 axb4 48.Rb3 Ra5+ 49.Ke4 Rb5
+/- (1.35) Depth: 20/41 00:02:07 191mN, tb=1850
38.Rc3 Rh8 39.Kc2 h6 40.gxh6 Rxh6 41.Kd3 f5 42.Rc4 Rh1 43.Rc2 Rh8 44.e4 Rh3+
+/- (1.31) Depth: 21/41 00:06:02 529mN, tb=9020
38.Re5
+/- (1.32) Depth: 21/41 00:06:17 550mN, tb=9895
38.Re5
+- (1.60) Depth: 21/41 00:06:52 606mN, tb=10917
38.Re5 Rxe5 39.fxe5 Kc6 40.e6 fxe6 41.Kc2 Kd5 42.Kd3 Ke5 43.b4 Kf5 44.b5 Ke5 45.Kc4 Ke4 46.a4 Ke5 47.a5 Kd6 48.b6 axb6 49.axb6 e5
+- (1.64) Depth: 21/41 00:07:44 690mN, tb=13298

[Terry McCracken]

...From Kasparov-Andersson (guess who won )

[d]4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - - 0 38

Here Kasparov plays 38.Re5!!, and after exchange the pawn ending is won for white. If black does not exchange-white checks on 7-th rank and wins effortlessly as well.


Note guys that Kasparov had planned all this well before, but if I rewind 4-5 moves back I think it would be too unfair to the engines

Would you mind posting the entire game? Very nice ending by Kasparov.

Terry

[Ignacio]

Hiarcs 11.2 needs 5:02 to find it

Analysis by HIARCS 11.2 MP:

1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 Rb6 5.Tc2 Th4 6.a3 f5 7.b4 Th1 8.a4 Td1+ 9.Td2
+- (1.42) Profundidad: 16/32 00:00:03 6523kN, tb=34
1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f6 5.Tc5 Th7 6.b4 Td7+ 7.Re4 f5+ 8.Re5 Td2 9.a4
+- (1.44) Profundidad: 17/34 00:00:06 12733kN, tb=78
1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f6 5.Tc5 Th7 6.b4 Th1 7.a4 Ta1 8.Tb5+ Ra8 9.Ta5 Td1+ 10.Re4 f5+ 11.Re5
+- (1.43) Profundidad: 18/39 00:00:10 20839kN, tb=181
1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f6 5.Tc5 Th7 6.b4 Th1 7.Re4 Ta1
+- (1.43) Profundidad: 19/39 00:00:19 39411kN, tb=651
1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f6 5.Tc5 Th7 6.b4 Td7+ 7.Re2
+- (1.42) Profundidad: 20/45 00:00:39 71893kN, tb=2764
1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.Tc2 Th7 6.Rd4 Te7 7.Tc3 Rb6 8.a3 Te8 9.Rd5 a5 10.Tc6+ Rb5 11.Txg6 Txe3
± (1.35) Profundidad: 21/45 00:01:49 160mN, tb=16376
1.Tc3 h5 2.gxh6 Th8 3.Rc2 Txh6 4.Rd3 f5 5.Tc2 Th8 6.b4 Td8+ 7.Re2 a6 8.a4 Th8 9.Td2 Rc6 10.Td4 Th3 11.Rd3 Th1 12.e4 fxe4+
± (1.35) Profundidad: 22/45 00:04:46 384mN, tb=60853
1.Te5
± (1.36) Profundidad: 22/45 00:05:02 409mN, tb=64834
1.Te5 Txe5 2.fxe5 Rc6 3.e6 fxe6 4.Rc2 Rd5 5.Rd3 Re5 6.b4 Rd5 7.e4+ Rd6 8.Rd4 e5+ 9.Rc4 Re6 10.b5
+- (1.54) Profundidad: 22/45 00:05:16 441mN, tb=67183

[Dirt]

...From Kasparov-Andersson (guess who won :) )

[d]4r3/pk3p1p/6p1/2R3P1/5P2/4P3/PP6/1K6 w - - 0 38

Here Kasparov plays 38.Re5!!, and after exchange the pawn ending is won for white. If black does not exchange-white checks on 7-th rank and wins effortlessly as well.


Note guys that Kasparov had planned all this well before, but if I rewind 4-5 moves back I think it would be too unfair to the engines ;)

Would you mind posting the entire game? Very nice ending by Kasparov.

Terry

It appears to be this one:

[Event "It (cat.15), Reykjavik (Iceland)"]
[Site "It (cat.15), Reykjavik (Iceland)"]
[Date "1988.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Garry Kasparov"]
[Black "Ulf Andersson"]
[ECO "D36"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Be7 7.e3
Nbd7 8.Bd3 Nh5 9.Bxe7 Qxe7 10.Nge2 g6 11.O-O-O Nb6 12.Ng3 Ng7
13.Kb1 Bd7 14.Rc1 O-O-O 15.Na4 Nxa4 16.Qxa4 Kb8 17.Rc3 b6
18.Ba6 Ne6 19.Rhc1 Rhe8 20.Qb3 Qd6 21.Nf1 Ka8 22.Nd2 Nc7
23.Bf1 Ne6 24.g3 Rc8 25.Bg2 Rc7 26.h4 Rd8 27.Nf3 Bc8 28.Qa4 c5
29.Ng5 Nxg5 30.hxg5 Bb7 31.dxc5 bxc5 32.Qf4 Qxf4 33.gxf4 d4
34.Rxc5 Rxc5 35.Bxb7+ Kxb7 36.Rxc5 dxe3 37.fxe3 Re8 38.Re5
Rxe5 39.fxe5 Kc6 40.Kc2 Kd5 41.b4 Kxe5 42.a4 f6 43.gxf6+ Kxf6
44.b5 1-0