....Test your engines...

Discussion of anything and everything relating to chess playing software and machines.

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sorcerers_apprentice

Re: ....Test your engines...

Post by sorcerers_apprentice »

Hi,

HIARCS finds it immediately:

Code: Select all

r4rk1/b1q2ppp/p7/1p1p1N2/3PnP1B/P6Q/1P4PP/4RRK1 w - -

Engine: HIARCS 12 MP (512 MB)
by Mark John Uniacke

10/31  0:01   +1.03    1.Rxe4 dxe4 2.Bf6 Qb6 (644.309) 522 

11/31  0:01   +0.78--  1.Rxe4 dxe4 (757.328) 543 

11/31  0:01   +0.77    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qe6 5.Re1 Qg6 6.Nh4 (892.681) 546 

12/31  0:02   +1.00    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qg6 5.Nh6+ Kf8 6.f5 (1.496.475) 560 

13/34  0:04   +1.25    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Rad8 5.Re1 Qg6 6.Nh4 Qe6 
                       7.Qg3+ (2.676.361) 573 

14/38  0:06   +1.00--  1.Rxe4 dxe4 (3.749.770) 588 

14/38  0:07   +0.50    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Rad8 5.Qh4 Qg6 6.Ne7+ Rxe7 (4.712.044) 593 

15/38  0:17   +0.75++  1.Rxe4 (10.066.384) 579 

15/38  0:21   +1.15    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qg6 5.Nh6+ Kf8 6.f5 Qg5 7.Nxf7 (12.368.693) 584 

16/44  0:29   +0.90--  1.Rxe4 dxe4 (17.139.858) 586 

16/45  0:33   +0.66    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qg6 5.Nh6+ Kf8 6.f5 Qc6 7.Qh5 Qc4 
                       8.Bd6+ Re7 9.Bxe7+ Kxe7 10.f6+ Kd7 
                       11.Nf5 Bxd4+ 12.Nxd4 Qxd4+ 13.Kh1 Qc4 
                       14.Rd1+ (20.212.275) 595 

17/45  1:09   +0.89    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qg6 5.Nh6+ Kf8 6.f5 Qc6 7.Kh1 Rec8 
                       8.Qh4 (40.240.830) 580 

best move: Re1xe4 time: 2:00.542 min  n/s: 574.781  nodes: 69.061.688
Crafty 22 SMP takes a bit more but finally sees it:

Code: Select all


r4rk1/b1q2ppp/p7/1p1p1N2/3PnP1B/P6Q/1P4PP/4RRK1 w - -

Engine: Crafty 22.0 (0 MB)
by Robert Hyatt

8/45   0:00   +0.68    1.Qg4 f6 2.Rc1 Qb7 3.Rfe1 Rfe8 4.Kh1 Bb6 
                       5.b3 (245.895) 2049 

8.00   0:00   +0.68    1.Qg4 f6 2.Rc1 Qb7 3.Rfe1 Rfe8 4.Kh1 Bb6 
                       5.b3 (339.078) 2260 

9.00   0:00   +0.67    1.Qg4 f6 2.Rc1 Qb7 3.Kh1 Rfe8 4.Rfe1 Bb6 
                       5.Nh6+ Kf8 6.Nf5 (582.398) 2239 

9.00   0:00   +0.67    1.Qg4 f6 2.Rc1 Qb7 3.Kh1 Rfe8 4.Rfe1 Bb6 
                       5.Nh6+ Kf8 6.Nf5 (839.836) 2332 

10.00  0:00   +0.33    1.Qg4 f6 2.Rc1 Qb7 3.Rfd1 Kh8 4.Ng3 Rac8 
                       5.Nxe4 dxe4 6.Bf2 (1.352.879) 2415 

10.00  0:01   +0.33    1.Qg4 f6 2.Rc1 Qb7 3.Rfd1 Kh8 4.Ng3 Rac8 
                       5.Nxe4 dxe4 6.Bf2 (2.923.407) 2436 

11.00  0:01   +0.20    1.Qg4 f6 2.Rc1 Qb7 3.Rfd1 Kh8 4.Ng3 f5 
                       5.Qf3 Rac8 6.Nxe4 fxe4 (4.247.620) 2386 

11.00  0:03   +0.20    1.Qg4 f6 2.Rc1 Qb7 3.Rfd1 Kh8 4.Ng3 f5 
                       5.Qf3 Rac8 6.Nxe4 fxe4 (8.026.175) 2564 

12.00  0:04   +0.04    1.Qg4 f6 2.Rc1 Qb7 3.Rfd1 Kh8 4.Ng3 Rae8 
                       5.b4 Qe7 6.f5 Bb6 7.Nxe4 Qxe4 8.Qxe4 Rxe4 (10.896.581) 2576 

12.00  0:07   +0.07    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qb3 f6 4.Qe3 Qd7 
                       5.Ng3 Nxg3 6.Qxg3 Rae8 (15.206.849) 2030 

12.00  0:10   +0.07    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qb3 f6 4.Qe3 Qd7 
                       5.Ng3 Nxg3 6.Qxg3 Rae8 (20.550.987) 2042 

13.00  0:12   +0.02    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qb3 f6 4.Ne3 Rfd8 
                       5.Qd3 Qd7 6.f5 Rac8 7.Re1 (26.874.856) 2177 

13.00  0:17   +0.02    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qb3 f6 4.Ne3 Rfd8 
                       5.Qd3 Qd7 6.f5 Rac8 7.Re1 (41.706.173) 2365 

14.00  0:25   -0.13    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qg4 f6 4.Ng3 f5 
                       5.Qh3 Rae8 6.Bg5 Qf7 7.Nxe4 Rxe4 
                       8.Qc3 (63.418.132) 2495 

14.00  1:00   -0.13    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qg4 f6 4.Ng3 f5 
                       5.Qh3 Rae8 6.Bg5 Qf7 7.Nxe4 Rxe4 
                       8.Qc3 (161.444.247) 2667 

15.00  1:05   -0.13    1.Rc1 Qb7 2.Rfd1 Kh8 3.Qg4 f6 4.Ng3 f5 
                       5.Qh3 Rae8 6.b4 Qf7 7.Rc6 Re6 8.Rxe6 Qxe6 
                       9.Nxe4 dxe4 (176.535.899) 2679 

15.00  1:32   +0.27    1.Rxe4 (252.719.482) 2735 

15.00  1:34   -0.20    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qg6 5.Rc1 f6 6.Rc6 fxe5 7.Qb3+ Kh8 
                       8.Rxg6 hxg6 (258.233.373) 2742 

15.00  1:34   -0.20    1.Rxe4 dxe4 2.Bf6 Qb6 3.Bxg7 Rfe8 
                       4.Be5 Qg6 5.Rc1 f6 6.Rc6 fxe5 7.Qb3+ Kh8 
                       8.Rxg6 hxg6 (258.233.373) 2741 

16.00  1:36   +0.20    1.Rxe4 (265.784.037) 2747 

best move: Re1xe4 time: 2:00.792 min  n/s: 2.747.121  nodes: 265.784.037
Then Phalanx XXII:

Code: Select all

depth=10 +0.16 Re1xe4  Pd5xe4  Bh4-f6  Qc7-b6  Bf6xg7  Rf8-e8  Bg7-e5  Qb6-g6  Nf5-h6  Kg8-f8  Pf4-f5  Qg6-c6  Qh3-h5  
Nodes: 46636437 NPS: 477881
Time: 00:01:37.59
Finally Selectsoft's 'ChampionshipChess', which I believe is the last reincarnation of 'Chess System Tal', does not like Rxe4 and discards it immediately, eventually settling for Qh3-g4 (hand copied analysis)

Code: Select all

2 Player Analysis, Status: Early Middlegame

d 2, 2 s, -1.44, e1e4 d5e4 h3g4 f7f6 g1h1
d 2, 3 s, +1.01, h2g4 f7f6 f5h6 g8h8 h6f5 f8g8
d 2, 7 s, +1.82, e1c1 c7b6 h3g4 g7g6 f5e7
d 3, 16 s, +1.82, e1c1 c7b6 h3g4 g7g6 f5e7
d 4, 43 s, +1.02, e1c1 c7a5 h3g4 g7g6 c1c6 g8h8
d 5, 123 s, >+1.40, e1c1 c7a5
d 5, 132 s, +1.16, e1c1 c7a5 h3g4 g7g6 g1h1 g8h8
d 5, 153 s, +1.39, h3g4 f7f6 e1c1 c7b7 g1h1 g8h8
d 6, 206 s, >+1.76, h3g4 g7g5
d 6, 356 s, +1.54, h3g4 f7f6 e1c1, c7b7 f1d1 g8h8 g1h1 g7g6
d 7, 975 s, +1.59, h3g4 f7f6 e1c1 c7b7 f1e1 g8h8 g4h5 g7g6
Cheers!
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