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Posted by wanstronian mailcafe.net 11/08/2005 01:13:07 Play online chess	Subject: Value of preventing castling Message: What value would you put on the prevention of castling by forcing the King to move early? Would you forfeit a piece to achieve this and if so, which one?
Posted by tyekanyk mailcafe.net 11/08/2005 01:59:26 Play online chess	Hmm... Message: It depends alot on the kind of threats you can produce, and if the kind is truly exposed, otherwise it may not pay off, beacause although he may have ssome ealy coordination problems, but after that's done with the material will start to tell.
Posted by ionadowman mailcafe.net 11/08/2005 02:31:03 Play online chess	Preventing castling... Message: Generally speaking it's not worth a whole piece. You need a lot of compensation in terms of space and time, e.g. the K well exposed. But try it out with someone. The Jerome Gambit runs 1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Worth a try do you think? Cheers, Ion ——— Chess grandmasters use twice the brain : Study — It may take years of hard work to become a chess grandmaster, but it gives a real boost to the brain â€“ for working out chess problems, at least. It seems expert chess players use both sides of their brain to process chess tasks, rather than just one. Merim Bilalic at the University of TÃ¼bingen in Germany used fMRI to scan the brains of eight international chess players and eight novices while they identified either geometrical shapes or whether the pieces on a chess board were in a check situation. The expert players were quicker at solving the chess problem, activating areas on both sides of their brains as they did so. The novices used just the left side. Bilalic had expected ...
Posted by chuckventimiglia mailcafe.net 11/08/2005 06:23:01 Play online chess	If the Queens are off the.... Message: board castling can be a detriment. The King becomes a fighting piece and should be positioned for that purpose for the end game. Castling can put the king in a backward position for end game play. ——— Chess: The best form of defence — It may be a cliche, but in a tight spot attacking can be the best way forward. RB: Hands up those of you who plumped for 1 Rb1. There's no disgrace if you did. Peter Leko, rated 2743 when he played this game, opted for exactly that and went on to draw. It's the move I thought of when I first came across the game, in Drazen Marovic's Secrets of Positional Chess â€“ but is it the best? After a series of miserable failures on my part, the boot's on the other foot this week â€“ it's Dan's turn to solve the chess puzzle. DK: Black's rook has just swept down to c2 attacking the pawn on b2, and although that could be defended with 1 Rb1, my gut feeling tells me not to look at this too deeply ...
Posted by velvetvelour mailcafe.net 11/08/2005 13:55:01 Play online chess	Message: In an open position with a fluid center preventing castling is indeed worthwhile, often worth the sacrifice of a pawn or two, as it is in certain lines of the Evan's Gambit, King's Gambit, and other double K-pawn gambits. Possibly even a piece could be invested depending on the position (you usually need a lead in development/initiative with a follow through of palpable, difficult to defend threats for the piece, i.e. the Muzio Gambit, certain positions where one sacs a bishop for pawns on h3/g4 over a castled king). It teaches one, if nothing else, on how to keep the pressure on via necessity, otherwise your advantage with fizzle and one will simply be left with a material deficeit. In a closed position, though, the nature of things changes considerably. If the center is locked and pawn exchanges are unlikely, a King is often safer in the center (as it is in variations of the French Defence and certain ones of the Sicilian, Benoni, and other defences of a closed nature) then scuttling it over on a wing, because the second player knows "where your king lives," and can often start a decisive build up of material w/a pawn rush to come crash the house. When the queens are off the board, often early in the game heading for a queenless middlegame, the peril of a centralized king becomes much less and you often want it in the center where it can better keep an eye on things and become favorably activated. As an aside, the Jerome Gambit is garbage and shouldn't be played. It also arises out of: 1) e4 e5 2) Nf3 Nc6 3) Bc4 Bc5 4) BxP KxB 5) NxP NxN 6) Qh5+. There are far sounder sacrificial lines in chess to start a king-hunt without resorting to such desperados. ——— America Has a New Chess Grandmaster and Three New International Masters — United States chess has rarely, if ever, had a week like the one that ended Saturday. On Saturday, four Americans earned titles at the Berkeley International chess tournament. Samuel Shankland, 19, the reigning United States Junior Champion, became a grandmaster, while Keaton Kiewra, 23, Daniel Naroditsky, 15, and Conrad Holt, 17, all qualified as international masters. Kiewra actually earned a grandmaster norm â€” the first of three needed for the title â€” but he still must raise his international rating above 2,400 to satisfy the requirements for the international master title. That is often less difficult than achieving the norms. Tatev Abrahamyan, 22 (she will be 23 on Thursday), earned ...
Posted by ionadowman mailcafe.net 11/09/2005 00:14:41 Play online chess	Kings in the centre... Message: Velvetvelour sums up pretty nicely occasions in which a K in the centre can be a liability, and when it can be a hazard. As for her gratuitous remarks in respect of the Jerome Gambit...well, she's right, broadly speaking. It ought to lose for White, with best play, but I think there is value in discovering things for oneself, hence my suggestion about trying it. I wouldn't play it in a team game, but perhaps you can use some of your other games as 'training' games in which you discuss opening ideas. Perhaps someone will accept a challenge to play a pair of games, one White, one Black, with this, or some other fixed opening agreed beforehand. You need not have your rating riding on such games... Anyway, just an idea... Cheers, Ion ——— China Rises, and Checkmates — If thereâ€™s a human face on Rising China, it belongs not to some Politburo chief, not to an Internet tycoon, but to a quiet, mild-mannered teenage girl named Hou Yifan. Ms. Hou (whose name is pronounced Ho Ee-fahn) is an astonishing phenomenon: at 16, she is the new womenâ€™s world chess champion, the youngest person, male or female, ever to win a world chess championship. And she reflects the way China â€” by investing heavily in education and human capital, particularly in young women â€” is increasingly having an outsize impact on every aspect of the world. Napoleon is famously said to have declared, â€œWhen China wakes, it will shake the world.â€ That is becoming ...
Posted by spugmyers mailcafe.net 11/09/2005 06:19:31 Play online chess	According to Heisman... Message: This reminds me of a "Novice Nook" article by Dan Heisman. -> www.chesscafe.com He says: "In IM Larry Kaufman’s excellent Chess Life article on isolated pawns, he stated that the single worst positional disadvantage was doubled isolated pawns on a semi-open file. Such a ruined pair of pawns was worth, on the average, only slightly more than one pawn – they had lost almost a full pawn in value. This is an interesting observation which allows us to draw an important and practical “powerful” conclusion: The single highest valued positional factor is worth slightly less than the least valued tactical factor (a pawn)." ——— David Howell surprised at Hastings Masters by young Indians — The 2011 version of the world's longest-running annual chess tournament, kept alive and well by Hastings Borough Council, ended on Wednesday with a tense final round and an upset result. England's youngest chess grandmaster, David Howell, 20, won his first five games but then lost tamely to France's No1 seed, Romain Edouard, who became the sole leader. It seemed the European GMs would fight out first prize until the little-known young Indians surged to the front in the final two rounds in an impressive breakthrough. Deep Sengupta, 22, beat Edouard in what was voted the best game of the chess event and shared the Â£2,000 top award on 7/9 with Arghyadip Das, 25, while ...
Posted by bonsai mailcafe.net 11/09/2005 09:33:03 Play online chess	Message: Mmmh, maybe that's not even too wrong for a single isolated factor, but we all know these occasional cases where one can have purely positional compensation (i.e. not a situation where you clearly win due to a sacrifice or can clearly get your material back anyway) for more than a pawn (sicilian exchange sacrifices on c3 being a typical case).
Posted by ionadowman mailcafe.net 11/09/2005 21:17:45 Play online chess	Kings in the centre... Message: I wonder why I typed 'hazard' instead of 'asset'?? Brain in a sling, obviously... Cheers, Ion
Posted by fudeematt mailcafe.net 12/09/2005 15:53:33 Play online chess	Message: Yes, the Jerome Gambit is dubious at best. But 1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7?! 5. Ng5!? Ngf6 6. Bd3 e6 7. N1f3 h6?! 8. Nxe6!? is worth a try and can give white a powerful attack, e.g. 8... Qe7 9.0-0 fxe6 (9... Qxe6? Re1) 10. Bg6+ Kd8 11. Bf4 b5 12. a4!? Bb7 13. Re1 Nd5 14. Bg3 Kc8 15. axb5 cxb5 16. Qd3 Bc6 17. Bf5! exf5 18. Rxe7 Bxe7 19. c4! 1-0 Deep Blue-Kasparov 1997 or 8... Qe7 9. 0-0 fxe6 10. Bg6+ Kd8 11. c4 Qd6 12. Qe2 Qc7 13. Rd1 Bd6 14. Ne5 Rf8 15. Bf4 Bxe5 16. dxe5 Ng8 17. Bg3 Qb6 18. Qg4 c5 19. Rd6! Qxb2?! 20. Rad1 Kc7 21. Qxe6 Ndf6 22. Rd7+! 1-0, Leko-Bakhtazde, 1995