Test Position: Rxe6!!!

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kgburcham
Posts: 2016
Joined: Sun Feb 17, 2008 4:19 pm

Zappa Mexico II

Post by kgburcham »

[d] 2r3k1/5pp1/3Rb2p/6r1/3pPQ2/2qB3P/2P3PK/5R2 w - -

Zappa Mexico II
2048 hash
Quad

9/23 0:00 0.00 1.Qf2 Qc7 2.Qxd4 Rd5 3.exd5 Qxd6+ 4.Kg1 Qxd5 5.Qxd5 Bxd5 6.Re1 (255.989) 1488
9/23 0:00 +0.09 1.Rb1 Ra5 2.Rb7 Rg5 3.e5 Qe1 4.Rxd4 Rxe5 (675.942) 1802
10/27 0:00 +0.15 1.Rb1 Bc4 2.Rb7 Bxd3 3.cxd3 Qxd3 4.Qxf7+ Kh7 (1.312.755) 1908
11/30 0:01 -0.15 1.Rb1 Bc4 2.Rd1 Bxd3 3.Rxd3 Qe1 4.h4 Rh5 (2.860.874) 2034
11/30 0:01 +2.10 1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 Qxf4+ 4.Rxf4 hxg5 5.Rf1 (3.307.139) 2054
12/30 0:02 +2.34 1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Kg3 Rf7 6.Rxf7 Kxf7 (4.438.828) 2073
13/34 0:02 +2.27 1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Kg3 Rc3 6.Kg4 Rc5 7.g3 (5.885.500) 2116
14/34 0:04 +2.33 1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Kg3 Rc5 6.Kg4 Ra5 7.Kh5 Kh7 (9.470.196) 2195
15/47 0:07 +2.52 1.Rxe6 fxe6 2.h4 Qc7 3.Qxc7 Rxc7 4.hxg5 hxg5 5.Kg3 Rc5 6.Kg4 Rc7 7.Rb1 Rc8 8.Kxg5 (18.330.789) 2355
16/47 0:15 +2.80 1.Rxe6 fxe6 2.h4 Qc7 3.Qxc7 Rxc7 4.hxg5 hxg5 5.Kg3 Rc8 6.Kg4 Rc5 7.Rb1 Rc8 8.Kxg5 Re8 9.e5 (38.299.076) 2473
17/47 0:26 +2.80 1.Rxe6 fxe6 2.h4 Qc7 3.Qxc7 Rxc7 4.hxg5 hxg5 5.Kg3 Rc8 6.Kg4 Rc5 7.Rb1 Rc8 8.Kxg5 Re8 9.e5 (66.349.023) 2533
18/50 1:14 +3.67 1.Rxe6 fxe6 2.h4 Qc7 3.Qxc7 Rxg2+ 4.Kxg2 Rxc7 5.e5 Rc5 6.Rf4 Rxe5 7.Rxd4 Rd5 8.Rf4 e5 9.Bc4 exf4 10.Bxd5+ Kf8 11.Kf3 (194.703.120) 2603
19/57 4:15 +4.64 1.Rxe6 fxe6 2.h4 Qc7 3.Qxc7 Rxc7 4.hxg5 hxg5 5.Kg3 Rc8 6.Kg4 Rc5 7.Rb1 Kf7 8.Rb7+ Kf6 9.Rd7 e5 10.Rd6+ Kf7 11.Rd5 Rxd5 12.exd5 Ke7 13.Kxg5 Kd6 (669.297.959) 2624
20/59 7:14 +4.75 1.Rxe6 fxe6 2.h4 Qc7 3.Qxc7 Rxc7 4.hxg5 hxg5 5.Kg3 Rc8 6.Kg4 Rc5 7.Rb1 Kf7 8.Rb4 Ke7 9.Rxd4 Ra5 10.g3 Rc5 11.Rc4 (1.134.211.384) 2610
best move: Rd6xe6 time: 7:24.969 min n/s: 2.512.866 nodes: 1.153.771.363
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jdart
Posts: 4420
Joined: Fri Mar 10, 2006 5:23 am
Location: http://www.arasanchess.org

Re: Test Position: Rxe6!!! - Arasan

Post by jdart »

Arasan does not find this very difficult:

bm Rxe6
1 0.00 g4 +0.13 52
2 0.00 Qf2! +0.63 827
2 0.00 Qf2 +0.75 1069
3 0.00 Qf2 +0.75 1961
4 0.02 e5 +0.41 14562
5 0.03 e5 +0.63 25109
6 0.10 Qf2 +0.53 71650
7 0.30 e5 +0.56 280040
8 0.60 Qf2 +0.56 588850
9 1.41 Qf2 +0.53 1453571
10 4.14 Qf2 +0.63 3832875
11 13.50 Rxe6! +1.13 14387147
11 13.69 Rxe6 +1.34 14569373
12 13.99 Rxe6! +1.84 14876377
12 15.41 Rxe6 +3.22 16546387
13 16.63 Rxe6 +3.00 17819861
14 19.91 Rxe6 +3.41 21316760
15 27.97 Rxe6 +3.28 29451527
16 42.17 Rxe6 +3.41 44415016


Can you say what the source is for the position?
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sorcerers_apprentice

Re: Test Position: Rxe6!!! - Arasan

Post by sorcerers_apprentice »

According to my database this is the source game:

Code: Select all

[Event "It 'Central Chess Club'"]
[Site "Moscow (Russia)"]
[Date "1959"]
[Round "2"]
[White "Smyslov Vassily (RUS)"]
[Black "Spassky Boris V (FRA)"]
[Result "1-0"]
[Eco "B85"]
[Annotator ""]
[Source ""]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 Nc6 7.O-O
e6 8.Be3 Bd7 9.Qe1 Nxd4 10.Bxd4 Bc6 11.Bd3 e5 12.Be3 Be7 
13.Rd1 O-O 14.f3 b5 15.Ne2 Qc7 16.Ng3 Bd7 17.h3 Rfe8 18.Qf2 
Rac8 19.b3 Be6 20.a4 bxa4 21.Bxa6 Ra8 22.Bb5 Rec8 23.bxa4 d5 
24.Bb6 Qb7 25.Kh1 d4 26.a5 Bb4 27.Bd3 Bxa5 28.Bxa5 Rxa5 
29.f4 exf4 30.Qxf4 Nh5 31.Nxh5 Rxh5 32.Rb1 Qd7 33.Kg1 h6 
34.Rb6 Rg5 35.Rd6 Qc7 36.Kh2 Qc3 37.e5 Qc7 38.Qxd4 Qa5 
39.Re1 g6 40.Re2 Rc5 41.Qf4 Rd5 42.c4 Rxd3 43.Rxd3 Rf5 
44.Qd4 Kg7 45.Rd1 g5 46.c5 Rf4 47.Qe3 Qa4 48.Rc1 Bd5 
49.e6 Bxe6 50.c6 Rc4 51.Rxc4 Qxc4 52.Qe5+ 1-0
The position in question arises at move after move 36. You can see that Smyslov did not play Rxe6 but rather 37.e5

Cheers !
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User avatar
Ovyron
Posts: 4562
Joined: Tue Jul 03, 2007 4:30 am

Re: Test Position: Rxe6!!!

Post by Ovyron »

HIARCS Paderborn 2007: (Instantly)

Code: Select all

 10/24	 0:00 	+2.94 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Rb1 e5 6.Rb5 Re7 7.Bc4+ Kh7 (167.572) 285
 11/24	 0:00 	+2.97 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Rb1 e5 6.Rb5 Re7 7.Bc4+ Kh7 8.Rb6 (250.500) 296
 12/27	 0:01 	+3.22++	1.Rxe6 (443.291) 305
 12/27	 0:01 	+3.22 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Rb1 e5 6.Kg3 Kh7 7.Kg4 Kh6 8.Kf5 Re7 (526.483) 305
 13/27	 0:03 	+3.26 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Rb1 Kf7 6.Rb5 Kg6 7.e5+ Kf7 8.Rb4 Rd7 9.Be4 g6 (958.262) 315
 14/31	 0:05 	+3.46 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Rb1 e5 6.Kg3 Kh7 7.Kg4 Rf7 8.Rb5 Re7 9.Kxg5 (1.840.382) 316
 15/33	 0:11 	+3.41 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 Qxf4+ 4.Rxf4 hxg5 5.Rg4 Rc5 6.e5 Rxe5 7.Rxd4 Kf7 8.c4 Rc5 (3.477.911) 307
 16/38	 0:22 	+3.46 	1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 Qxf4+ 4.Rxf4 hxg5 5.Rg4 e5 6.Rxg5 (6.667.002) 301
best move: Rd6xe6 time: 0:43.783 min  n/s: 277.303  nodes: 12.087.302
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swami
Posts: 6664
Joined: Thu Mar 09, 2006 4:21 am

Re: Test Position: Rxe6!!! - Arasan

Post by swami »

jdart wrote:Arasan does not find this very difficult:

bm Rxe6
1 0.00 g4 +0.13 52
2 0.00 Qf2! +0.63 827
2 0.00 Qf2 +0.75 1069
3 0.00 Qf2 +0.75 1961
4 0.02 e5 +0.41 14562
5 0.03 e5 +0.63 25109
6 0.10 Qf2 +0.53 71650
7 0.30 e5 +0.56 280040
8 0.60 Qf2 +0.56 588850
9 1.41 Qf2 +0.53 1453571
10 4.14 Qf2 +0.63 3832875
11 13.50 Rxe6! +1.13 14387147
11 13.69 Rxe6 +1.34 14569373
12 13.99 Rxe6! +1.84 14876377
12 15.41 Rxe6 +3.22 16546387
13 16.63 Rxe6 +3.00 17819861
14 19.91 Rxe6 +3.41 21316760
15 27.97 Rxe6 +3.28 29451527
16 42.17 Rxe6 +3.41 44415016


Can you say what the source is for the position?
So, Arasan took 13 seconds to find the move.That's great.

The source is from some Russian strategy book which I'm studying for some time now and I happen to find this game in database.
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Harald Johnsen

Re: Test Position: Rxe6!!! - Arasan

Post by Harald Johnsen »

7 seconds for Cyrano, not too bad

Code: Select all

Cyrano 0.4beta3:
  1/8	00:00	         239	0	 0,00	e5 Qc5 Rxd4 Rxe5
  2/6	00:00	         395	0	 0,00	e5 Qc5 Rxd4 Rxe5
  2/7	00:00	         691	0	+0,44	Qf2 Kh8 Rxd4
  3/8	00:00	       1.023	0	+0,44	Qf2 Kh8 Rxd4
  4/12	00:00	       5.586	1	+0,40	Qf2 Rb8 h4 Ra5 Rxd4
  5/17	00:00	      14.336	1	+0,64	Qf2 Rb8 Qxd4 Qd2 Rf2 Qe1
  6/18	00:00	      41.322	1	+0,04	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ g3 Bxd5
  7/18	00:00	     104.837	1	+0,04	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ g3 Bxd5
  8/24	00:00	     165.153	1	+0,20	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ Kg1 Qxd5 c3 Qxd4+ cxd4 Bd5
  9/22	00:01	     273.356	1	+0,20	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ Kg1 Qxd5 c3 Qxd4+ cxd4 Bd5
 10/28	00:01	     468.934	356.395	+0,06	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ Kg1 Qxd5 c3 Qb3 Rc1
 11/27	00:03	   1.043.578	365.428	+0,28	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ Rf4 Bxd5 g3 Ra8 c4 Ra2+ Kg1 g5 c5 Rg2+ Kf1
 12/35	00:05	   2.079.649	385.645	+0,36	Qf2 Qc7 Qxd4 Rd5 exd5 Qxd6+ Rf4 Bxd5 g3 Qc6 c4 Bf3 c5
 12/35+	00:06	   2.391.254	387.052	+0,38	Rxe6 fxe6
 12/35	00:07	   2.831.657	387.052	+3,28	Rxe6 fxe6 h4 Rxg2+ Kxg2 Qc6 Kg1 Rd8 e5 Qb7 Bc4 Qe7 h5
 13/28	00:08	   3.119.863	404.406	+3,32	Rxe6 fxe6 h4 Rxg2+ Kxg2 Qc6 Kg1 Rd8 e5 Qc7 h5 Qe7 Kh2 Kh8 Qe4
 14/33	00:11	   5.189.674	460.186	+3,46	Rxe6 fxe6 h4 Qc7 hxg5 hxg5 Qxc7 Rxc7 e5 Rc5 Re1 Kf7 Re4 Rd5 Rg4 Rxe5 Rxd4 Re1
 15/29	00:13	   5.920.257	468.035	+3,48	Rxe6 fxe6 h4 Rxg2+ Kxg2 Qc7 e5 Qa7 Qe4 Qa8 Qxa8 Rxa8 Rf4 Ra5 Rxd4 Rxe5 c4
 16/53	00:24	  12.166.525	508.150	+3,76	Rxe6 fxe6 h4 Qc7 hxg5 Qxf4+ Rxf4 hxg5 Rg4 e5 Rxg5 Rc5 g4 Kf7 Rf5+ Ke6 Kg2 Kd7
 17/38	00:29	  14.551.104	502.463	+3,78	Rxe6 fxe6 h4 Qc7 hxg5 Qxf4+ Rxf4 hxg5 Rg4 e5 Rxg5 Rc5 g4 Kf7 Rf5+ Kg8 Kg2 g6 Rf6 g5
 18/40	00:38	  18.953.511	500.069	+3,82	Rxe6 fxe6 h4 Qc7 hxg5 Qxf4+ Rxf4 hxg5 Rg4 e5 Rxg5 Rc5 g4 Kf7 Rf5+ Ke8 Kg2 g6 Rf6 g5 Rd6
 19/41	00:52	  26.175.027	497.397	+3,82	Rxe6 fxe6 h4 Qc7 hxg5 Qxf4+ Rxf4 hxg5 Rg4 e5 Rxg5 Rc5 g4 Kf7 Rf5+ Kg8 Kg2 g6 Rf6 Kg7 g5 Rc3
 20/44	01:30	  45.704.138	507.099	+3,82	Rxe6 fxe6 h4 Qc7 hxg5 Qxf4+ Rxf4 hxg5 Rg4 e5 Rxg5 Rc5 g4 Kf7 Rf5+ Kg8 Kg2 g6 Rf6 Kg7 g5 Rc3 Kg3
HJ.
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Ben Lau

Re: Test Position: Rxe6!!! - Arasan

Post by Ben Lau »

Fritz 10, Fantastic 4s.

New game, 85'/40+35'/20+20'
2r3k1/5pp1/3Rb2p/6r1/3pPQ2/2qB3P/2P3PK/5R2 w - - 0 1

Analysis by Fritz 10:

1.e5 Qc5 2.Qxd4 Qxe5+ 3.Rf4 Qa5 4.c4 Re8 5.Qf2 Qc7
= (0.05) Depth: 9/24 00:00:00 115kN
1.Qf2
= (0.05) Depth: 9/24 00:00:00 158kN
1.Qf2 Qc7 2.Qxd4 Rd5 3.exd5 Qxd6+ 4.Qf4 Qxd5 5.Rf3 Qc6 6.Qg3 Re8 7.Rf4 Qc3
= (-0.02) Depth: 10/26 00:00:00 437kN
1.e5
= (-0.01) Depth: 10/26 00:00:00 447kN
1.e5
= (0.14) Depth: 10/26 00:00:00 477kN
1.e5 Qc5 2.Qxd4 Qxe5+ 3.Rf4 Re8 4.h4 Rh5 5.Qxe5 Rxe5 6.c4 Kf8 7.Rfd4
= (0.12) Depth: 11/24 00:00:01 823kN
1.e5
? (0.40) Depth: 12/27 00:00:03 2363kN
1.e5
? (0.68) Depth: 12/27 00:00:03 2770kN
1.Rxe6
? (0.69) Depth: 12/30 00:00:04 3535kN
1.Rxe6
? (0.84) Depth: 12/30 00:00:04 3572kN
1.Rxe6
? (1.16) Depth: 12/30 00:00:04 3620kN
1.Rxe6
+- (1.78) Depth: 12/30 00:00:04 3693kN
1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 Qxf4+ 4.Rxf4 hxg5 5.Rg4 Rc5 6.e5 Rxe5 7.Rxd4 Kf7 8.Rd7+
+- (2.82) Depth: 12/34 00:00:05 4160kN
1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 hxg5 4.Qxc7 Rxc7 5.Kg3 Rc5 6.Kg4 g6 7.g3 Kg7
+- (2.80) Depth: 13/32 00:00:05 4414kN
1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 Qxf4+ 4.Rxf4 hxg5 5.Rg4 e5 6.Rxg5 Rc5 7.Rf5 g6 8.Rf1 Rc3
+- (2.77) Depth: 14/29 00:00:12 5411kN
1.Rxe6 fxe6 2.h4 Qc7 3.hxg5 Qxf4+ 4.Rxf4 hxg5 5.Rg4 e5 6.Rxg5 Rc5 7.Rf5 g6 8.Rf6
+- (2.81) Depth: 15/35 00:00:14 7596kN

(Ben, 30.03.2008)

Regards,
Ben
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