Rxe5!

[Eelco de Groot]

Using another version, the last Build 5 of Glaurung Mjolnir but using the same sources from Tord from last Sunday I get:


1rb4r/1pb3kp/p2q1pp1/2p1p3/P1B5/1P1P1Q2/1BP1RPPP/R5K1 w - -

Engine: Glaurung 080420 Mjolnir 001 Build 5 (256 MB)
by Tord Romstad

9.00 0:00 +0.66 1.Bc3 h5 2.Ree1 Be6 3.Bxe6 Qxe6
4.Bd2 b6 5.Qe4 Qf5 (349.210) 366

10.01 0:02 +0.56 1.Bc3 Rd8 2.a5 h6 3.Rae1 Be6 4.Bxe6 Qxe6
5.Qe3 Qd5 6.Bd2 (980.538) 448

11.01 0:06 +0.49 1.Bc3 h5 2.h3 Be6 3.Bxe6 Qxe6 4.Bd2 b6
5.Rae1 Rbd8 6.Re4 Bd6 (3.002.797) 489

11.14 0:09 +0.72 1.a5 Bf5 2.Qe3 e4 3.g3 exd3 4.Qe7+ Kh6
5.Qe3+ Kg7 6.Rd2 Rhe8 7.Qg5 (4.736.246) 496

12.01 0:13 +0.70 1.a5 Bf5 2.Ree1 Rhe8 3.Qg3 Be6
4.Bxe6 Rxe6 5.Bc1 Kg8 6.Bh6 Rd8
7.Ra4 (6.916.643) 499

13.01 0:27 +0.64 1.a5 Bf5 2.Ree1 Rhe8 3.Qg3 Be6
4.Bxe6 Rxe6 5.Re4 Kg8 6.Bc3 Rd8
7.Rae1 b5 (13.839.778) 508

14.01 0:58 +0.49 1.a5 Bf5 2.Ree1 h5 3.h3 Be6 4.Bxe6 Qxe6
5.Bc1 Qc6 6.Qxc6 bxc6 7.Bd2 Rhd8
8.Re4 Rd4 (29.978.030) 514

14.06 1:38 +1.52 1.Rxe5 Rf8 2.Re3 Qxh2+ 3.Kf1 Bd6
4.Rae1 Qh1+ 5.Ke2 Qh5 6.Qxh5 gxh5
7.Kf1 Bf5 8.Bd5 Rfd8 9.Bc3 h6 10.Kg1 (50.974.272) 517

15.01 2:00 +1.41 1.Rxe5 Rf8 2.Re3 Qxh2+ 3.Kf1 Bd6
4.Rae1 Qh1+ 5.Ke2 Qh5 6.Qxh5 gxh5
7.Kf1 Bf5 8.Bd5 Rfd8 9.Bc3 h6
10.R1e2 b6 (62.935.716) 521

16.01 3:26 +1.47 1.Rxe5 Rf8 2.Re3 Qxh2+ 3.Kf1 Bd6
4.Rae1 Qh1+ 5.Ke2 Qh5 6.Qxh5 gxh5
7.Kf1 Bf5 8.Bd5 b5 9.axb5 axb5
10.Bc3 h6 11.Kg1 Rfd8 (109.233.267) 527

17.01 6:00 +1.47 1.Rxe5 Rf8 2.Re3 Qxh2+ 3.Kf1 Bd6
4.Rae1 Qh1+ 5.Ke2 Qh5 6.Qxh5 gxh5
7.Kf1 Bf5 8.Bd5 b5 9.axb5 axb5
10.Bc3 h6 11.Rf3 Bg4 12.Rfe3 (192.940.693) 534

18.01 13:10 +1.31 1.Rxe5 Rf8 2.Re4 Qxh2+ 3.Kf1 Bd6
4.Rae1 Bf5 5.R4e3 Qh1+ 6.Ke2 Qh4
7.Be6 Bxe6 8.Rxe6 Qf4 9.Qh3 Rbd8
10.Bc1 Qf5 11.Bh6+ Kf7 12.Qxf5 gxf5
13.Kf3 (423.531.942) 535

best move: Re2xe5 time: 15:34.344 min n/s: 539.755 nodes: 504.300.000

Eelco

[ernest]

Quick solvers (cont II):

Code: Select all

Analysis from E:\rxe5.epd   
4/21/2008 6:25:19 PM Level: Infinite
Analyzing engine: Strelka_2_1

Hi Dann,

What is Strelka_2_1? Is it available?
(I only know Strelka 2.0 Beta)

[Terry McCracken]

1. e4 c5 2. b3 Nc6 3. Bb2 Nf6 4. e5 Nd5 5. Bc4 e6 6. Nf3 d6 7. O-O dxe5 8. Nxe5 Nxe5 9. Bxe5 f6 10. Bb2 Bd6 11. Qh5+ g6 12. Qf3 Nf4 13. Bb5+ Kf7 14. Re1 e5 15. Nc3 Kg7 16. Bc4 Bc7 17. Ne2 Nxe2+ 18. Rxe2 Rb8 19. a4 Qd6 20. d3 a6 21. Rxe5 fxe5 22. Qf7+ Kh6 23. Bc1+ Kh5 24. Qg7 Qf8 25. Qxc7 Bf5 26. Qxe5 1-0
[d] 1r3q1r/1p5p/p5p1/2p1Qb1k/P1B5/1P1P4/2P2PPP/R1B3K1 b - - 9 26

It was from a game I played last night - I have recently been testing out 2.b3 followed by 3.Bb2 (the Snyder Variation, named for USCF master Robert M. Snyder - it has been used occasionally by Nigel Short and is a favourite of Georgian GM Tamaz Gelashvili) against the Sicilian and so far it seems to be not too bad.

You played it...Well Done!

Terry

[Dann Corbit]

Quick solvers (cont II):

Code: Select all

Analysis from E:\rxe5.epd   
4/21/2008 6:25:19 PM Level: Infinite
Analyzing engine: Strelka_2_1

Hi Dann,

What is Strelka_2_1? Is it available?
(I only know Strelka 2.0 Beta)

It is the version that Uri Blass modified. I do not think it is stronger than the original, just much easier to read. At any rate, if Uri says it is OK, I will send you a binary. The play will not be significantly different than 2.0

[michiguel]

[d] 1rb4r/1pb3kp/p2q1pp1/2p1p3/P1B5/1P1P1Q2/1BP1RPPP/R5K1 w - - 0 21
How long does it take your engine to find it?

I am not even sure this is good test. Every engine sees that after Rxe5 you cannot capture the rook. The question is what happens after black recovers the pawn at h2 and how the engine evaluates the position.

Miguel

[Terry McCracken]

[d] 1rb4r/1pb3kp/p2q1pp1/2p1p3/P1B5/1P1P1Q2/1BP1RPPP/R5K1 w - - 0 21
How long does it take your engine to find it?

I am not even sure this is good test. Every engine sees that after Rxe5 you cannot capture the rook. The question is what happens after black recovers the pawn at h2 and how the engine evaluates the position.

Miguel

Try Toga, Rxe5! is a good move.