Test position

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Robert Flesher
Posts: 1287
Joined: Tue Aug 18, 2009 3:06 am

Test position

Post by Robert Flesher »

What engine plays the enigmatic, positional sac, Rg4 !!?!
[d] 2kr2r1/pp6/2n2P2/5bP1/2qp1P1n/P6P/2P1NK2/1RB2BRQ w - - 0 24
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: Test position

Post by yanquis1972 »

where did you find this, out of curiosity? not in my DB.
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yanquis1972
Posts: 1766
Joined: Wed Jun 03, 2009 12:14 am

Re: Test position

Post by yanquis1972 »

rybka sees Rg4 at depth 2 (!!) but eventually settles into a draw score. seems like it might be an interesting position for a long IDeA session if there is debate about this.

Rybka 3 Human:

[+0.00] d=20 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.f7 Qxf7 29.Rd2 Ne5 30.Rxd3 Nxd3 31.Kg3 Qh5 32.Nd4 Nxf4 33.Bxf4 Rg4 34.Kh2 Rxf4 35.Qd5 Rf2 36.Kg1 Rxf1 37.Kxf1 Qxh3 38.Ke2 Qh5 39.Nf3 (0:20:08) 639730kN
[+0.00] d=19 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.f7 Qxf7 29.Rd2 Ne5 30.Rxd3 Nxd3 31.Kg3 Qh5 32.Nd4 Nxf4 33.Bxf4 Rg4 34.Kh2 Rxf4 35.Qd5 Rf2 36.Kg1 Rxf1 37.Kxf1 Qxh3 38.Ke2 Qh5 39.Nf3 (0:11:35) 361460kN
[+0.00] d=18 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.f7 Qxf7 29.Rd2 Ne5 30.Rxd3 Nxd3 31.Kg3 Qh5 32.Nd4 Nxf4 33.Bxf4 (0:06:08) 189426kN
[+0.00] d=17 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.f7 Qxf7 29.Rd2 Ne5 30.Rxd3 Nxd3 31.Kg3 Qh5 32.Bg2 Kb8 33.Qf1 Ne1 34.Qxe1 Bxh3 35.Bd5 Rg4 36.Kf2 Qh4 37.Ng3 Rxg3 38.Qe5 Kc8 39.Be6 (0:03:28) 102017kN
[+0.08] d=16 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.f7 Qxf7 29.Rd2 (0:02:04) 58110kN
[+0.08] d=15 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.f7 Qxf7 29.Rd2 (0:01:56) 54656kN
[+0.26] d=14 24.Rb2 d3 25.cxd3 Rxd3 26.Rg3 Be4 27.Rc2 Qa4 28.Rxd3 Bxh1 29.Rcc3 Rf8 30.Ng3 Be4 31.Rd2 Bg6 32.Rd5 Rd8 33.Rxd8 Kxd8 34.Be3 Qa5 (0:00:17) 8118kN
[+0.30] d=13 24.Rb2 d3 25.cxd3 (0:00:06) 2621kN
[+0.28] d=12 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.Qg1 Qxa3 31.Rc2 Qb4 32.Bd2 (0:00:01) 772kN
[+0.28] d=11 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.Qg1 Qxa3 31.Rc2 Qb4 32.Bd2 (0:00:01) 615kN
[+0.48] d=10 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.Qg1 Qa5 31.Bd2 Qxa3 (0:00:00) 153kN
[+0.48] d=9 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.Qg1 Qa5 (0:00:00) 79kN
[+0.47] d=8 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 (0:00:00) 50kN
[+0.67] d=8 24.Rg4 (0:00:00) 27kN
[+0.47] d=7 24.Rg4 Rh8 25.Rxh4 (0:00:00) 14kN
[+0.74] d=6 24.Rb2 d3 25.cxd3 (0:00:00) 6kN
[+1.05] d=6 24.Rb2 (0:00:00) 5kN
[+0.85] d=5 24.Rb2 Rge8 (0:00:00) 4kN
[+0.64] d=5 24.Rg4 Rh8 (0:00:00) 2kN
[+0.83] d=4 24.Rg4 (0:00:00) 1kN

stockfish also isntantly considers it before looking at an alternative then also scoring a draw:

[+0.00] d=19 24.Rg4 Rh8 25.g6 d3 26.g7 Rhe8 27.cxd3 Rxd3 28.Rxh4 Qc5 29.Ke1 Qc3 30.Kf2 Qc5 (0:01:47) 932526kN
[+0.00] d=18 24.Rg4 Rh8 25.g6 d3 26.g7 Rhe8 27.cxd3 Rxd3 28.Rxh4 Qc5 29.Ke1 Qc3 30.Kf2 Qc5 (0:00:51) 431893kN
[-0.20] d=18 24.f7 Rgf8 25.g6 Nxg6 26.h4 Rxf7 27.h5 Nh8 28.h6 Bxc2 29.Bh3 Kb8 30.Rb2 d3 31.Ng3 d2 (0:00:30) 256163kN
[+0.16] d=17 24.f7 Rgf8 25.Rg4 Ng6 26.Rb2 Bxg4 27.hxg4 Qxf7 28.Qe4 Nge5 29.Qf5 Kc7 30.Qxf7 Rxf7 31.f5 d3 32.cxd3 Nxd3 33.Kg3 Nxb2 34.Bxb2 Re7 35.g6 Rd1 36.Kf2 Ne5 37.f6 Nxg4 38.Kg2 Ne3 39.Kh3 Rxf1 40.fxe7 Kd7 41.Ng3 (0:00:20) 165366kN
[+0.24] d=16 24.f7 Rgf8 25.Rg4 Ng6 26.Rb2 Bxg4 27.hxg4 Qxf7 28.Qe4 Nge5 29.Qf5 Kc7 30.Qxf7 Rxf7 31.Kg1 Nxg4 32.Rb3 Re8 33.Rd3 Ne3 34.Nxd4 Nxf1 35.Kxf1 Nxd4 36.Rxd4 Rd7 37.Rxd7 Kxd7 38.f5 Ke7 (0:00:14) 111950kN
[+0.04] d=15 24.f7 Rgf8 25.Rg4 Ng6 26.Rb2 Bxg4 27.hxg4 Qxf7 28.Qe4 Nge5 29.Qf5 Kc7 30.Qxf7 Rxf7 31.Kg1 Nxg4 32.Rb3 Re8 33.Rd3 Re4 34.Ng3 Ree7 35.g6 Rf6 36.f5 Ne3 (0:00:09) 71135kN
[+0.32] d=14 24.f7 Rgf8 25.Rg4 Ng6 26.Rb2 Bxg4 27.hxg4 Qxf7 28.Qe4 Nge5 29.Qf5 Qd7 30.Qxd7 Rxd7 31.Kg1 d3 32.cxd3 Nxd3 33.Rc2 Nxc1 34.Rxc1 Rd3 35.f5 Rxa3 (0:00:05) 37836kN
[+0.48] d=13 24.f7 Rgf8 25.Rg4 Ng6 26.Rb2 Bxg4 27.hxg4 Qxf7 28.Kg1 d3 29.cxd3 Rxd3 30.f5 Qe7 31.Rc2 Nge5 32.Qh5 Nf3 33.Kh1 Rd1 34.Ng3 (0:00:03) 14541kN
[+0.48] d=12 24.f7 Rgf8 25.Rg4 Ng6 26.Rb2 Bxg4 27.hxg4 Rxf7 28.Qe4 (0:00:02) 7754kN
[+0.00] d=12 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.f7 Nd4 31.Bxb7 Kd7 32.Bg2 Nxe2 33.Kxe2 Rxa3 34.Rb7 (0:00:02) 6747kN
[-0.24] d=12 24.Bg2 Rge8 25.Re1 Nxg2 26.Qxg2 Bxc2 27.Qg4 Kb8 28.f5 Bxb1 29.Bf4 Ka8 30.Rxb1 d3 31.Be3 Qc2 (0:00:02) 6586kN
[+0.12] d=11 24.Bg2 Rge8 25.Re1 Nxg2 26.Qxg2 d3 27.cxd3 Qxd3 28.f7 Re4 29.Rb2 Bxh3 30.Qf3 (0:00:01) 5582kN
[+0.00] d=11 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.f7 Nd4 31.Bxb7 Kd7 32.Bd2 Nc2 33.Kd1 Ne3 34.Ke1 Nc2 (0:00:01) 4072kN
[+0.00] d=10 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Bg2 Qc5 29.Ke1 Rh8 30.f7 Nd4 31.Bxb7 Kd7 32.Bd2 Nc2 33.Kd1 Ne3 34.Ke1 Nc2 (0:00:01) 1911kN
[-0.12] d=9 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Rb2 d3 27.cxd3 Rxd3 28.Ke1 Rh8 29.Rd2 Be4 (0:00:00) 818kN
[+0.16] d=8 24.Rg4 Rh8 25.Rxh4 Rxh4 26.Bg2 Bxc2 27.Bxc6 Bxb1 28.Bxb7 Kb8 29.Bd2 (0:00:00) 241kN
[+0.40] d=7 24.Rg4 Rh8 25.Rb2 d3 26.cxd3 Rxd3 27.Be3 Be4 (0:00:00) 60kN
[+0.88] d=6 24.Rg4 Rh8 25.Kg1 Bxg4 26.hxg4 Rde8 27.Ng3 Qxc2 (0:00:00) 13kN
[+1.61] d=5 24.Rg4 Rh8 25.Kg1 Bxg4 26.hxg4 Qxc2 (0:00:00) 8kN
[+1.85] d=4 24.Rg4 Bxg4 25.hxg4 Qxc2 26.f7 Rgf8 (0:00:00) 2kN
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De Vos W
Posts: 431
Joined: Tue Dec 01, 2009 11:59 am

Re: Test position

Post by De Vos W »

New game
r3kb1r/1b3ppp/p2ppn2/q1n5/1R1NPP2/2NBB3/1PP3PP/3Q1RK1 w kq - 0 1

Analysis by Deep Fritz 10:

1.Rc4 Nxd3
+/= (0.64) Depth: 9/30 00:00:00 382kN
1.Rc4 Nxd3 2.cxd3
+/= (0.64) Depth: 9/30 00:00:00 444kN
1.Rxb7
+/= (0.64) Depth: 9/30 00:00:00 471kN
1.Rxb7
+/- (0.80) Depth: 9/30 00:00:00 515kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2
+/- (0.92) Depth: 9/30 00:00:00 571kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2
+/- (0.92) Depth: 10/26 00:00:00 622kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2
+/- (0.92) Depth: 11/27 00:00:00 836kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2
+/- (0.92) Depth: 12/29 00:00:00 1567kN
1.Rc4
+/- (0.92) Depth: 12/35 00:00:01 3309kN
1.Rc4 Nxd3 2.cxd3 Qd8 3.Qa4+ Qd7 4.Qxd7+ Nxd7 5.Rc7 Rb8 6.f5 e5 7.Nf3 Be7 8.d4 exd4
+/- (1.07) Depth: 12/35 00:00:01 4674kN
1.Rc4 Qd8 2.f5 e5 3.Nf3 Ng4 4.Bxc5 dxc5 5.Qe2 Bd6 6.Nd5 0-0 7.b3 Nf6
+/- (0.81) Depth: 13/34 00:00:03 10293kN
1.Rxb7
+/- (0.82) Depth: 13/34 00:00:03 11047kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2 10.Bb6
+/- (0.95) Depth: 13/34 00:00:03 11621kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2 10.Bb6
+/- (0.95) Depth: 14/36 00:00:04 16127kN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4 Qxb2 10.Bb6
+/- (0.95) Depth: 15/37 00:00:07 26776kN
1.Rxb7 Nxb7
+/= (0.67) Depth: 16/38 00:00:16 56442kN
1.Rxb7 Nxb7 2.f5
+/= (0.67) Depth: 16/38 00:00:17 62002kN
1.Rc4
+/= (0.68) Depth: 16/42 00:00:29 104mN
1.Rc4 Qd8 2.f5 e5 3.Nf3 Ng4 4.Bxc5 dxc5 5.Qd2 Be7 6.h3 Nf6 7.Nxe5 Qc7 8.Nf3 Rd8
+/= (0.69) Depth: 17/42 00:01:26 309mN
1.Rxb7
+/= (0.69) Depth: 17/42 00:01:31 327mN
1.Rxb7
+/- (0.85) Depth: 17/42 00:01:33 336mN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4
+/- (0.93) Depth: 17/42 00:01:42 369mN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qb7 7.f6 Nxd3 8.Qxd3 Rc8 9.c4
+/- (0.93) Depth: 18/39 00:02:14 485mN
1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qc6 7.c4 Rb8 8.b4 Nxd3 9.Qxd3 Be7 10.Rc1 Bf6
+/- (0.83) Depth: 19/42 00:04:03 893mN

1.Rxb7 Nxb7 2.f5 e5 3.Nc6 Qc7 4.Nb4 Nc5 5.Ncd5 Nxd5 6.Nxd5 Qc6 7.f6 Nxd3 8.Qxd3 Rc8 9.b4
+/- (0.85) Depth: 20/46 00:08:03 1780mN

(04.03.2010)
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metax
Posts: 344
Joined: Wed Sep 23, 2009 5:56 pm
Location: Germany

Re: Test position

Post by metax »

Wrong thread, sorry ;)

@topic. My engine sees it, but then fails low and returns to another move:

Code: Select all

FEN: 2kr2r1/pp6/2n2P2/5bP1/2qp1P1n/P6P/2P1NK2/1RB2BRQ w - - 0 24 

ChessMind:
  1/13	00:00	           0	0	+1,33	Lc1d2 Dc4xc2
  1/17	00:00	           0	0	+1,99	Tb1b2 Tg8e8
  2/19	00:00	      18.478	98.000	+1,91	Tb1b2 Lf5xc2 Lc1d2
  3/21	00:00	      57.810	160.000	+1,59	Tb1b2 Lf5xc2 Tg1g4 Tg8h8
  4/22	00:01	     136.075	198.000	+2,14	Tb1b2 Lf5xc2 Tg1g4 Tg8h8 Lc1d2
  5/24	00:02	     255.116	212.000	+1,92	Tb1b2 Tg8e8 Tg1g4 Lf5xg4 h3xg4 d4d3
  6/27	00:07	   1.260.032	230.000	+1,10	Tb1b2 Tg8e8 Tg1g3 Lf5xc2 Se2c3 Dc4c5 Tb2xc2 d4xc3+
  6/27	00:10	   1.890.053	232.000	+1,62	Tg1g4 Tg8h8 Tb1b2 d4d3 c2xd3 Td8xd3 Lc1e3
  7/29	00:13	   3.151.198	234.000	+1,32	Tg1g4 Tg8h8 Tb1b2 Lf5xg4 h3xg4 d4d3 c2xd3 Td8xd3
  8/32	00:24	   5.742.316	237.000	+0,30	Tg1g4 Tg8h8 Tg4xh4 Th8xh4 Kf2g3 Dc4xc2 Kg3xh4 Td8h8+ Kh4g3 Dc2xb1
  8/33+	00:35	   8.379.892	235.000	+1,31	Tb1b2
  8/33	00:42	  10.006.985	236.000	+1,33	Tb1b2
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