Showing posts with label Conats. Show all posts
Showing posts with label Conats. Show all posts

Wednesday, July 21, 2010

Making Something out of Nothing

Jerome Gambit Gemeinde member drumme (who has over 250 games in the updated New Year's Database), performs a bit of a magic trick in the next game. Equally entertaining are the suggestions made by super chess-playing programs Stockfish and Rybka.

drumme - Conats
FICS, 2010


1.e4 e5 2.Bc4 Nc6 3.Nf3 h6

The Semi-Italian Opening.

4.Bxf7+


A bit more "orthodox" in Jerome Gambit-like openings would be a waiting move like 4.0-0 or 4.Nc3, in order to allow Black to play 4...Bc5 before making this sacrifice.

On the other hand, drumme has scored 64% in the 28 games with this line in the Database, so he has a pretty good idea of what he's doing.

4...Kxf7 5.d4 d6



Black's King feels a draft, so he doesn't open the position further with 5...exd4.

6.dxe5

This may not be the best move, but drumme was 4-0 with it coming into this game – so why not try it again?

6...Nxe5

Played without much thought. Safer was 6...dxe5, but much better than that was 6...Qd7, giving the Black Queen additional protection, followed by 7...dxe5, with a clear advantage.

7. Nxe5+


The Black d-pawn is pinned, and "suddenly" White has a strong attack. 

7...Ke6

This leads to a mate in 5.

Against the better (but still insufficient) 7...Kf6 the two computers have different attacking ideas.

Stockfish likes the piece sacrifice 8.Qf3+ Kxe5, followed by 9.Qf7 Nf6 when it believes that Black's King is more awkwardly placed than White's Queen.




analysis diagram







Continuing 10.Nc3 d5 Stockfish sacs another piece 11. Bf4+ Kxf4 (if 11... Kd4 12. O-O-O+) 12. Nxd5+




analysis diagram







and here answers 12...Ke5 and 12...Kxe4 with 13.O-O-O. Best for Black is considered to be 12...Qxd5.

On the other hand, Rybka answers 7...Kf6 with the trappy 8.h4, as 8...Kxe5 is well met by 9.Qd5+. 




analysis diagram







After 8.Qe8 (best) 9.Bg5+ hxg5 10.hxg5+ Kxg5 11.Nf3+ Kg6 12.Rxh8 Qxe4+ 13.Kf1 White is the exchange ahead and Black has a piece hanging.







analysis diagram






8. Qd5+ Ke7 9. Qf7 checkmate



Not as flashy as the two computers, but it gets the job done quickly.