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King
 
Joined: Sun Oct 01, 2006 10:20 pm
Posts: 155
Location: Eckental / Germany
 Post subject: How computers play against the Halloween Gambit
PostPosted: Wed May 28, 2008 11:17 am 
The Halloween Gambit is called the "Mueller-Schulze Gambit" in German. As these names are among the most common in Germany, this actually means "No Name Gambit" or Gambit of ordinary inexperienced players. I prefer the name "Halloween" which may indicate that you face a great (unpleasant?) surprise. It is a very sharp opening, as White sacrifices a knight on move 4 for a pawn and a lot of tempi.

So far the "Halloween" has not been refuted. Maurits Wind, the leading expert of the opening, played a lot of correspondence games with it and was very successful.

It normally starts (many transpositions are possible) with

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Nxe5!? (some books say ??)

Here most computers are out of their opening book (unless they use a very large one), but they continue playing the main variations

4.- Nxe5 5. d4 Nc6 (5.- Ng6 is another main variation, but most computers play 5. - Nc6)

6. d5 Ne5 7. f4 Ng6 8. e5 Ng8 9. d6! cxd6 10. exd6

This is the crucial position and here the computers vary. Some of the weaker engines play 10.- Qa5 but the strongest reply is 10. - Qf6. I played a blitz game against "brainless" which continued

10.- Qa5 11. h4 Qb4 12. Qe2+ Kd8 13. f5 Nxh4 14. a3 Nxg2+ 15. Qxg2 Qxd6 16. Bd2 Qe5+ 17. Be2 Ne7 18. Rf1 Ke8 19. Bf4 Qxf5 20. Qf3 Qxc2 22. Nd6+ Kd8 23. Rc1 and White is winning.

This is wild and crazy stuff. Some engines play the better

10. - Qf6 11. Nb5 Kd8 (11. - Nxf4 may be stronger) 12. Be3 Qxb2 13. Bd4 Qb4 14. c3 Qb2 15. Rb1 Qxa2 16. g3 b6 17. Be2 Bb7 18. 0-0 with a complicated position. White has compensation for the sacrificed material. But you may not survive this in a blitz game against a strong engine. In blitz games most human opponents blunder somewhere.

At the moment I am preparing an opening book for the Arena GUI, but if you are seriously interested in playing the "Halloween" you may have my beta version in the ctg format which you can use in Fritz or ChessBase. Just send me a private message and give me your e-mail address.

Have fun with the Halloween! :D


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Newbie
 
Joined: Sat May 31, 2008 2:40 pm
Posts: 1
 Post subject:
PostPosted: Fri Jun 06, 2008 2:38 pm 
Dear Chessfips

Halloween is useful in blitz games of 1, 3 and 5 minutes and you sacrifice a knight and still remains in good position. I agree but still, there is risk of loosing. But I have an opening where the risk is there but no so high. If you want I will tell you in next mail.


Regards

Ajay


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King
 
Joined: Sun Oct 01, 2006 10:20 pm
Posts: 155
Location: Eckental / Germany
 Post subject:
PostPosted: Mon Jun 09, 2008 9:39 am 
ajaimal wrote:
Dear Chessfips

Halloween is useful in blitz games of 1, 3 and 5 minutes and you sacrifice a knight and still remains in good position. I agree but still, there is risk of loosing. But I have an opening where the risk is there but no so high. If you want I will tell you in next mail.


Regards

Ajay


There is the risk of loosing in practical all openings, but of course the Halloween is very sharp and the risk is higher. But Black is in a difficult situation, and according to my experience, human players nearly always blunder.

That the Halloween can only be played in blitz games is not true. Maurits Wind, the greatest specialist on the Halloween, has played it successfully in correspondence chess.

Have fun with the Halloween :D :lol:


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