Nxe5!!

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

Moderator: Ras

Jack Lad
Posts: 8557
Joined: Wed Mar 08, 2006 10:01 pm
Location: UK

Nxe5!!

Post by Jack Lad »

[d] r2qkb1r/ppp2ppp/1nn5/4p2b/8/1BNP1N1P/PPP2PP1/R1BQK2R w KQkq - 1 9
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: Nxe5!!

Post by Terry McCracken »

Jack Lad wrote:[d] r2qkb1r/ppp2ppp/1nn5/4p2b/8/1BNP1N1P/PPP2PP1/R1BQK2R w KQkq - 1 9
Much nicer than Legall's Mate.

There's a bit of calculation in this opening position. Do you have the complete game?
Terry McCracken
Jack Lad
Posts: 8557
Joined: Wed Mar 08, 2006 10:01 pm
Location: UK

Re: Nxe5!!

Post by Jack Lad »

Terry McCracken wrote:
Jack Lad wrote:[d] r2qkb1r/ppp2ppp/1nn5/4p2b/8/1BNP1N1P/PPP2PP1/R1BQK2R w KQkq - 1 9
Much nicer than Legall's Mate.

There's a bit of calculation in this opening position. Do you have the complete game?
http://www.chessgames.com/perl/chessgame?gid=1405197

It was composed.
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: Nxe5!!

Post by Terry McCracken »

Jack Lad wrote:
Terry McCracken wrote:
Jack Lad wrote:[d] r2qkb1r/ppp2ppp/1nn5/4p2b/8/1BNP1N1P/PPP2PP1/R1BQK2R w KQkq - 1 9
Much nicer than Legall's Mate.

There's a bit of calculation in this opening position. Do you have the complete game?
http://www.chessgames.com/perl/chessgame?gid=1405197

It was composed.
It may have been but still it's worth a look. Thanks for linking the game.
Terry McCracken
User avatar
Eelco de Groot
Posts: 4722
Joined: Sun Mar 12, 2006 2:40 am
Full name:   Eelco de Groot

Re: Nxe5!!

Post by Eelco de Groot »

Jack Lad wrote:[d] r2qkb1r/ppp2ppp/1nn5/4p2b/8/1BNP1N1P/PPP2PP1/R1BQK2R w KQkq - 1 9
This seems a good testposition Jack, not too easy, thanks!


r2qkb1r/ppp2ppp/1nn5/4p2b/8/1BNP1N1P/PPP2PP1/R1BQK2R w KQkq -

Engine: Rainbow Serpent 1.8(s)dc Build 003 (Athlon 2009 MHz, 256 MB)
by Tord Romstad, Marco Costalba, Joona Kiiski

1.00 0:00 +1.37 9.O-O (1.145) 4

2.00 0:00 +1.17 9.O-O Bc5 (1.392) 5

3.00 0:00 +0.88 9.O-O Nd4 10.g4 (2.445) 9

3.00 0:00 +1.13 9.g4 Bg6 10.Bg5 (2.593) 10

4.00 0:00 +0.80 9.g4 Bg6 10.O-O Bc5 (3.043) 12

4.00 0:00 +0.88 9.O-O Be7 10.g4 Bg6 (3.654) 14

5.00 0:00 +1.09 9.O-O Be7 10.g4 Bg6 11.Be3 (4.081) 16

6.00 0:00 +0.96 9.O-O Be7 10.g4 Bg6 11.Re1 Qd6 (5.277) 19

7.00 0:00 +0.72-- 9.O-O Be7 (12.413) 44

7.00 0:00 +1.13 9.O-O Be7 10.g4 Bg6 11.Re1 O-O
12.Nxe5 Nxe5 13.Rxe5 Bf6 (17.149) 60

8.00 0:00 +0.88-- 9.O-O Be7 (21.137) 71

8.00 0:00 +1.13 9.O-O Bb4 10.g4 Bg6 11.Bg5 f6 12.Bh4 Bf7 (32.975) 105

9.00 0:00 +1.05-- 9.O-O Bb4 (38.854) 118

9.00 0:00 +0.96-- 9.O-O Bb4 (46.276) 134

9.00 0:00 +0.80-- 9.O-O Bb4 (54.696) 151

9.00 0:00 +0.80 9.O-O Bb4 10.g4 Bg6 11.Qe2 f6 12.a3 Bxc3
13.bxc3 Bf7 14.Be3 Bxb3 15.cxb3 (62.163) 165

10.00 0:00 +0.48-- 9.O-O Bb4 (78.414) 185

10.00 0:00 +0.40 9.O-O Bb4 10.g4 Bg6 11.Qe2 f6 12.a3 Bxc3
13.bxc3 Bf7 14.d4 Bd5 15.dxe5 O-O (129.131) 250

11.00 0:00 +0.48 9.O-O Bb4 10.g4 Bg6 11.Qe2 f6 12.Ne4 Bf7
13.a3 Be7 14.Bxf7+ Kxf7 15.Be3 Qe8
16.Nc5 (196.577) 299

12.00 0:01 +0.44 9.O-O Bb4 10.g4 Bg6 11.Qe2 f6 12.Ne4 Bf7
13.Bxf7+ Kxf7 14.c3 Bd6 15.Be3 Re8
16.Nc5 Qc8 17.Rfe1 (404.390) 380

13.01 0:01 +0.52++ 9.O-O Bb4 (584.695) 406

13.01 0:01 +0.56 9.O-O Bb4 10.g4 Bg6 11.Qe2 f6 12.Ne4 Bf7
13.Bxf7+ Kxf7 14.c3 Bd6 15.Qc2 Be7
16.Be3 g6 (598.092) 411

14.01 0:02 +0.40-- 9.O-O Bd6 (1.102.020) 446

14.01 0:04 +0.24-- 9.O-O Bd6 (1.874.625) 466

14.01 0:04 +0.36 9.O-O Bd6 10.g4 Bg6 11.Bg5 f6 12.Be3 Bf7
13.Bxf7+ Kxf7 14.Ne4 Qd7 15.Nh4 Rhd8
16.Nf5 Kg8 17.Bh6 Bf8 18.Qc1 (2.292.721) 473

15.01 0:06 +0.24 9.O-O Bd6 10.g4 Bg6 11.Bg5 f6 12.Bd2 Bf7
13.Bxf7+ Kxf7 14.Ne4 Rf8 15.g5 Kg8
16.gxf6 gxf6 17.Kh2 Ne7 18.Rg1+ Ng6 (3.324.346) 480

16.01 0:10 +0.24 9.O-O Bd6 10.g4 Bg6 11.Re1 O-O
12.Bg5 Qc8 13.d4 exd4 14.Nxd4 Na5
15.Ndb5 Bb4 16.Be7 Nxb3 17.cxb3 Bxe7
18.Rxe7 Rd8 19.Qf3 (5.238.035) 485

17.01 0:14 +0.32++ 9.O-O Bd6 (6.922.948) 489

17.01 0:14 +0.40++ 9.O-O Bd6 (7.302.258) 489

17.01 0:16 +0.28 9.O-O Bd6 10.Ne4 O-O 11.Bg5 Be7
12.Bxe7 Qxe7 13.Ng3 Bg6 14.Re1 Qc5
15.Qe2 Rae8 16.Ne4 Qa5 17.Qd2 Qxd2
18.Nexd2 Bf5 (7.985.866) 491

18.01 0:21 +0.20-- 9.O-O Bd6 (10.432.889) 495

18.01 0:32 +0.20 9.O-O Bd6 10.Be3 O-O 11.Re1 Re8
12.Nb5 Na5 13.Qe2 Qd7 14.Nxd6 cxd6
15.Bxb6 axb6 16.Qe4 Bg6 17.Qd5 Qc6
18.Ng5 Nxb3 19.Qxb3 (16.277.471) 500

19.01 0:42 +0.16 9.O-O Bd6 10.g4 Bg6 11.a4 a5 12.Bg5 Qd7
13.Nb5 Be7 14.Bxe7 Qxe7 15.Qe2 O-O-O
16.Rfe1 f6 17.d4 Rhe8 18.dxe5 Nxe5
19.Red1 (21.106.601) 502


19.09 0:47 +0.32++ 9.Nxe5 Bxd1 (24.099.584) 502

19.09 0:48 +0.44++ 9.Nxe5 Bxd1 (24.210.194) 503

19.09 0:48 +0.68++ 9.Nxe5 Bxd1 (24.367.411) 503

19.09 0:48 +1.17++ 9.Nxe5 Bxd1 (24.608.271) 504

19.09 0:51 +1.53 9.Nxe5 Bxd1 10.Bxf7+ Ke7 11.Bg5+ Kd6
12.Ne4+ Kxe5 13.f4+ Kd4 14.Rxd1 Nb4
15.Bxd8 Rxd8 16.Kd2 Nxd3 17.cxd3 Rd7
18.Be6 Bb4+ 19.Ke2 Re7 20.Bb3 Rf8
21.g3 Bd6 22.h4 (25.989.747) 508

20.01 2:18 +1.69 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 Qd7
12.a3 O-O-O 13.O-O Bd6 14.Re1 Rhe8
15.Nb5 Kb8 16.d4 a6 17.Nxd6 Qxd6
18.c3 f6 19.Qe2 Bg6 (71.681.549) 518

21.01 2:38 +1.65 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 Qd7
12.O-O Bd6 13.Re1 O-O 14.g4 Bg6
15.Nh4 Na5 16.Qf3 Rae8 17.Nxg6 hxg6
18.Kg2 c6 19.Ne4 Nxb3 20.axb3 Bb4
21.c3 f5 22.Nc5 (81.681.453) 515

22.01 2:59 +1.77++ 9.Nxe5 Qh4 (92.078.683) 514

22.01 3:11 +1.53-- 9.Nxe5 Qh4 (98.278.259) 512

22.01 3:54 +1.45 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 h6
12.O-O O-O-O 13.a4 Na5 14.Ba2 Qf6
15.Qe2 Kb8 16.g4 Bg6 17.Ne4 Bxe4
18.dxe4 Qxb2 19.Bxf7 Qf6 20.Ba2 Nac4
21.Bxc4 (120.914.229) 515

23.01 4:05 +1.69++ 9.Nxe5 Qh4 (126.121.259) 514

23.01 4:22 +1.61 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 h6
12.O-O O-O-O 13.a4 Na5 14.Ba2 Qf6
15.Ne4 Qxb2 16.Ng3 Bg6 17.Nh4 Bd6
18.Nxg6 fxg6 19.Qd2 Nc6 20.Rfb1 Qe5
21.f4 Qa5 22.Qxa5 (134.126.585) 511

24.01 4:51 +1.61 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 h6
12.O-O O-O-O 13.Ne4 Bg6 14.Re1 Bxe4
15.Bxb6 axb6 16.Rxe4 Qf6 17.d4 Kb8
18.c3 Bd6 19.Qe2 h5 20.Re1 g5 (149.369.608) 511

25.01 5:00 +1.53-- 9.Nxe5 Qh4 (153.568.738) 511

25.01 5:13 +1.69++ 9.Nxe5 Qh4 (160.438.228) 511

25.01 5:28 +1.61 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 h6
12.O-O O-O-O 13.Ne4 Bg6 14.Re1 Bxe4
15.Bxb6 axb6 16.Rxe4 Qf6 17.d4 Kb8
18.c3 g5 19.Nd2 Bd6 20.Qh5 Bf4
21.Nf3 Qf5 22.Rae1 (167.760.690) 511

26.01 5:41 +1.69++ 9.Nxe5 Qh4 (174.248.514) 510

26.01 6:12 +1.53-- 9.Nxe5 Qh4 (189.848.165) 510

26.01 6:45 +1.45-- 9.Nxe5 Qh4 (207.071.681) 511

26.01 7:02 +1.53 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 h6
12.O-O O-O-O 13.Ne4 Bg6 14.Re1 Bxe4
15.Bxb6 axb6 16.Rxe4 Qf6 17.d4 g5
18.c3 h5 19.Ne1 Qg6 20.Qf3 f6 21.Nc2 Bd6
22.Ne3 (215.820.766) 510

27.01 8:21 +1.45-- 9.Nxe5 Qh4 (255.971.272) 510

27.01 11:46 +1.37-- 9.Nxe5 Qh4 (365.986.232) 517

27.01 13:12 +1.41 9.Nxe5 Qh4 10.Nf3 Qe7+ 11.Be3 h6
12.O-O O-O-O 13.Ne4 Nd5 14.Bxd5 Rxd5
15.Re1 a6 16.a3 Qd7 17.b4 Be7 18.d4 Bxf3
19.Qxf3 Nxd4 20.Bxd4 (409.993.462) 517

28.01 22:41 +1.45 9.Nxe5 Qh4 10.g3 Bxd1 11.gxh4 Nxe5
12.Kxd1 O-O-O 13.Rg1 Kb8 14.Be3 Nbc4
15.Ke2 Nxe3 16.fxe3 f5 17.d4 Nc6
18.Nd5 g6 19.h5 Rd6 20.Raf1 Bh6
21.Nf4 Ne7 22.Bf7 (706.581.834) 519

29.01 30:51 +1.49 9.Nxe5 Qh4 10.g3 Bxd1 11.gxh4 Nxe5
12.Kxd1 O-O-O 13.Rg1 Kb8 14.Be3 f6
15.Ke2 Nc6 16.Rae1 Nd4+ 17.Bxd4 Rxd4
18.Kd1 Rd8 19.h5 Nd7 20.f4 c6 21.Ke2 Nc5
22.Kd2 (979.034.162) 528

30.01 38:41 +1.41-- 9.Nxe5 Qh4 (1.231.696.474) 530

30.01 40:50 +1.49 9.Nxe5 Qh4 10.g3 Bxd1 11.gxh4 Nxe5
12.Kxd1 O-O-O 13.Rg1 f6 14.h5 Nf3
15.Rg3 Nd4 16.Be3 a6 17.Kd2 Nxb3+
18.axb3 Nd5 19.Re1 h6 20.Rg4 Nxc3
21.bxc3 Rd5 22.Rh4 (1.297.483.331) 529


best move: Nf3xe5 time: 42:31.032 min n/s: 528.928 nodes: 1.349.313.346
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
rightrook
Posts: 1452
Joined: Wed Mar 08, 2006 8:45 pm

Re: Nxe5!!

Post by rightrook »

Thanks....Good test move..!

Hiarcs 11.2 found it in 28 sec.

:D
Jack Lad
Posts: 8557
Joined: Wed Mar 08, 2006 10:01 pm
Location: UK

Re: Nxe5!!

Post by Jack Lad »

[d] rn3rk1/pbppq1pp/1p2pb2/4N2Q/3PN3/3B4/PPP2PPP/R3K2R w KQ - 6 11
This is one is easy for an engine but a nice one for the brain. 8-)

Ed Lasker found the winning move.
http://www.chessgames.com/perl/chessgame?gid=1259009
http://en.wikipedia.org/wiki/Edward_Las ... able_games
http://www.chesshistory.com/winter/extr ... homas.html
Now cracks a noble heart.—Good night, sweet Princess, And flights of angels sing thee to thy rest!
tano-urayoan
Posts: 638
Joined: Thu Aug 30, 2007 8:23 pm
Location: San Juan, Puerto Rico

Re: Nxe5!!

Post by tano-urayoan »

Jack Lad wrote:[d] rn3rk1/pbppq1pp/1p2pb2/4N2Q/3PN3/3B4/PPP2PPP/R3K2R w KQ - 6 11
This is one is easy for an engine but a nice one for the brain. 8-)

Ed Lasker found the winning move.
http://www.chessgames.com/perl/chessgame?gid=1259009
http://en.wikipedia.org/wiki/Edward_Las ... able_games
http://www.chesshistory.com/winter/extr ... homas.html
This is a classic in tactical manuals Qxh7
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: Nxe5!!

Post by Terry McCracken »

Jack Lad wrote:[d] rn3rk1/pbppq1pp/1p2pb2/4N2Q/3PN3/3B4/PPP2PPP/R3K2R w KQ - 6 11
This is one is easy for an engine but a nice one for the brain. 8-)

Ed Lasker found the winning move.
http://www.chessgames.com/perl/chessgame?gid=1259009
http://en.wikipedia.org/wiki/Edward_Las ... able_games
http://www.chesshistory.com/winter/extr ... homas.html
I remember solving this mate around '83 and I believe there's a faster answer then in the text.
Terry McCracken
Terry McCracken
Posts: 16465
Joined: Wed Aug 01, 2007 4:16 am
Location: Canada

Re: Nxe5!!

Post by Terry McCracken »

Nevermind, they give the faster mate.
Terry McCracken