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Topic: Perpetual check

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	Perpetual Calendars (Site not responding. Last check: 2007-09-19)
		Perpetual motion machines (the Latin term ''perpetuum mobile'' is not uncommon) are a class of hypothetical machines which would produce useful energy in a way which would violate the established laws of physics.
		Perpetual motion machines are divided into two subcategories defined by which law of thermodynamics would have to be broken in order for the device to be a ''true'' perpetual motion machine.
		Perpetual war is a war that has no clear ending conditions, and seems likely to flare up from time to time for the foreseeable future.
	www.wwwtln.com /finance/144/perpetual-calendars.html (1273 words)

	[No title]
		Perpetual Check - A frequent case of the triple repetition draw is “perpetual check”.
		If one can check the king of the opponent forever from the same alternating positions and satisfies the triple repetition rule, the game is a draw.
		However, he can force a draw by perpetual check when his Knight is moved to h6, f7, h6, f7 and finally h6.
	www.okschess.org /starting/promotion/draws.doc (420 words)

	Chinese Chess, Free Chinese Chess Software Download - E Chinese (Site not responding. Last check: 2007-09-19)
		Check: A move of any piece that causes the opponent's King to be threatened with capture in the next move.
		Perpetual Check: Continuously checking opponent using one or more pieces is not allowed.
		For example, a perpetual blocking, if it is also a perpetual chase, is a violation even though perpetual blocking is allowed in general.
	echinese.51.net /chinese-chess/chinese-chess.htm (1111 words)

	MSN Encarta - Search Results - perpetual
		Perpetual Motion, long-held concept of a system that could operate indefinitely, once started, without any further expenditure of outside energy....
		In formal play, the game is a draw if 50 consecutive moves are made by each side without a capture or a pawn move, or if the same position is about...
		A third fixed calendar, the Perpetual Calendar, has been proposed to the U.S. Congress without success.
	encarta.msn.com /perpetual.html (96 words)

	Chessville - Instruction - Endgames - Perpetual Check
		Perpetual check is a defensive technique that can help save an otherwise lost position, or gain you a draw at an essential point in a match or tournament.
		Perpetual check has either of two possible aims, both resulting in a drawn game: three-time repetition of the position, or 50 consecutive moves without a pawn move or a capture.
		The possibility of perpetual check is something that you should always be on the lookout for, whether you're winning or losing.
	www.chessville.com /instruction/Center_Squares/Perpetual_Check/Perpetual_Check.htm (923 words)

	Perpetual check -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-09-19)
		A draw by perpetual check used to be in the (Click link for more info and facts about rules of chess) rules of chess.
		However, it has been removed because perpetual check will eventually result in a draw by either
		For example, giving perpetual check is not allowed in (A form of chess played on a board of 81 squares; each player has 20 pieces) shogi.
	www.absoluteastronomy.com /encyclopedia/P/Pe/Perpetual_check.htm (225 words)

	Chess Corner - Chess Tutorial - How Chess Games Are Drawn
		Perpetual check is usually used by the weaker side to avoid losing the game.
		Stalemate - If the King is not in check but it is unable to move to a safe square we say that the King is stalemated and the game is drawn.
		The perpetual check position above is also a draw because the same position occurs three times.
	www.chesscorner.com /tutorial/basic/draw/draw.htm (298 words)

	Perpetual check
		However, he can force a draw by perpetual check: he can continue to give check, and the game is a draw.
		Note that to have perpetual check, it is necessary that the same positions appear after a while; just giving `a lot of' checks after another isn't sufficient to have perpetual check.
		NeuroDoc is correct - perpetual check is 'chess slang', commonly used for a forced sequence of moves.
	www.chessvariants.com /d.chess/eternal.html (427 words)

	Asian Chinese Chess Rules
		Perpetually threatening to "check and capture" is a draw.
		Perpetual Check - Continuously checking the opponent, causing the sequence of moves from both sides to fall into a fixed pattern.
		Similar definitions also apply to "one check and one chase", "one check and one idle", "one threatening to checkmate and one chase", "one threatening to checkmate and one idle", "several check and one threatening to checkmate", and "several check and one idle".
	www.clubxiangqi.com /rules/asiarule.htm (3266 words)

	askphiljackson.com (Site not responding. Last check: 2007-09-19)
		The King must then either be moved out of check, or a piece or Pawn must be interposed between the King and the attacking hostile piece; or lastly, the hostile piece Of Pawn giving check must be taken and removed from the board.
		Double Check happens when the King is attacked by two pieces at the same time, viz., by the piece moved and another hostile piece discovered.
		Perpetual Check occurs when check can be given eternally on two or more squares, and the opponent can only parry or move out of one check to render him- self liable to another.
	www.askphiljackson.com (316 words)

	www.chesstool.com :: Online Chess Discussions (Site not responding. Last check: 2007-09-19)
		Avoiding perpetual check when you're in a better position is just as important as avoiding stalemate.
		Similarly, if you are winning, you should keep an eye out for the fact that your opponent is looking for a perpetual check, and try to make sure that he won't be able to.
		There is nothing underhanded whatsoever about perpetual check, it is part of chess stragegy, used by players from the novice (who's already learned the hard way that perpetual checking is ok :)) to grandmaster.
	www.chesstool.com /readpost.php?threadid=9055 (331 words)

	STALEMATE IN CHESS (Site not responding. Last check: 2007-09-19)
		WHITE has a series of saving moves of perpetual check to cause a draw..
		If the King is not in check but it is unable to move to a safe square we say that the King is stalemated and the game is drawn.
		The perpetual check position above is also a draw because the same position occurs three times.(not necessarly in a row)
	www.chesswarrior.com /smate/smate.html (252 words)

	[No title]
		Perpetual checks tend to be simpler and much fewer in type than mates.
		PERPETUAL CHECK The threat of perpetual check is often the defender's best chance.
		ESCAPING CHECKS Ways in which checks may be escaped include: (1) Not capturing pawns (2) Meeting a check with a check NOT CAPTURING PAWNS Sometimes a king can escape checks by not taking opponent pawns and hiding behind them.
	loiodice.com /chess/cc-endings/endgame.txt (3497 words)

	Product Listing - rolex (Site not responding. Last check: 2007-09-19)
		Lady Oyster Perpetual DATEJUST model self-winding chronometer in Stainless Steel and 18k gold with a "Jubilee" style bracelet and Synthetic Sapphire Crystal.
		Oyster Perpetual Lady DATEJUST model self-winding chronometer in Stainless Steel and 14k gold with a "Jubilee" style bracelet and Plastic Crystal.
		The bezel is graduated and rotatable for checking decompression time-spans.
	www.floridagoldonline.com /store/agora.cgi?product=rolex (309 words)

	Lajos Portisch vs Garry Kasparov (1981)
		My guess is that Kasparov has seen that particular perpetual check finish of the combination so many times in his preparations that it jumps out at him effortlessly.
		is an outstanding defensive combination, using the Knight pseudo-sacrifice as a key deflection and offering an aesthetically pleasing perpetual check combination on the key White key squares d1, f3, and h5, with the possibility of using f1 to make it a perpetual between four squares.
		I looked at using the night to set up the queen for perpetual check, and noticed that you have to get rid of the white N first, and that the rook can do that job.
	www.chessgames.com /perl/chessgame?gid=1069940 (978 words)

	Xiangqi
		Kings act as rooks for the purpose of checking: If the two kings are in the same file, there must be at least one blocking piece between them.
		Check and Checkmate are the same as in Chess.
		Perpetual check and other repetitions are not allowed.
	www.crockford.com /chess/xiangqi.html (654 words)

	Check
		The elementary and commonest form of attack on the enemy KI is the simple threat arising from a check.
		Double check, +DO he +CH is a means of pursuing the KI but it is also a weapon that can be used to capture new enemy MPs/mps.
		Discovered check, +DC he +DC (discovered) is a superb form of the +CH.
	chess-dictionary-chesmayne.net /Check.htm (2007 words)

	Repetition Detection
		A program can attempt to find a perpetual check if it is losing, and it can avoid this situation if it is winning.
		Traditionally, a draw score is returned in these cases, but I have heard that some programs return a deliberately positive score if there is a middlegame perpetual check, as long as the program is doing the checking.
		Kennedy saw that his king was in check, and he had to move it.
	www.seanet.com /~brucemo/topics/repetition.htm (1648 words)

	IBM Research \| Deep Blue \| Overview
		And maybe the most precise move is preventing anything with the move Kf1, against the possible perpetual check.
		That's why it's call perpetual check, but it goes on forever, it's perpetual, and because it's continually check, check, check, check, check, check, check, the game could be a draw.
		Whether or not this is perpetual check requires very, very precise analysis.
	www.research.ibm.com /deepblue/games/game2/html/move43b.shtml (524 words)

	X-bit labs - Articles - Chess Championship: Humans vs. Computer (page 8)
		And in the variant with the perpetual check, the program has a big material advantage — a bishop — and a lot of positional pluses.
		As for the check itself, the program can only detect it when things get worse in all positions or if there is a triple repetition of a certain position.
		On the other hand, the perpetual check threat was more evident in the previous games — the position repeated three times much sooner.
	www.xbitlabs.com /articles/editorial/display/chess_8.html (858 words)

	How Games are Drawn (Site not responding. Last check: 2007-09-19)
		There is no way White can avoid Black from checking his king so the game is a draw.
		If the king is not in check but it is unable to move to a safe square (and no other piece of that colour can be moved on the board) we say that the king is stalemated and the game is drawn.
		In the diagram below the White king is not in check but it has no safe squares to go to nor has he any other chessmen to move.
	www.chessclub.demon.co.uk /tutorial/beginner/draw/draw.htm (270 words)

	Drawing Games
		Perpetual check is an endless series of checks which the opponent cannot avoid.
		is in check (under attack) and has no possibility of getting his King out of check.
		In the case of stalemate, the King is not in check and has no legal moves.
	www.geocities.com /CapeCanaveral/Lab/8354/draw.htm (330 words)

	View Answer (Site not responding. Last check: 2007-09-19)
		I checked the resource you sent me for this next question but couldn't find it the answer: What to do when we're stuck in the back and forth check, out-of-check, check, out-of-check, etc, in which the in-check person's move is the only one available to him to get out of check.
		Hello Brian, it sounds like you have a case of Perpetual Check or as you say, you go a rook down.
		If you continue to administer check so that the position is repeated three times in a game, you or your opponent can claim a draw.
	www.allexperts.com /previousqv.asp?QuestionID=3829400 (221 words)

	Ratings and Comments for Perpetual check
		As the page states: "Note that to have perpetual check, it is necessary that the same positions appear after a while; just giving `a lot of' checks after another isn't sufficient to have perpetual check." So really, the rule is that if the same position is repeated three times, the game is a draw.
		In this example, ther were no ohter moves fo rwhite to save his king ohter that the perpetual check..
		Can it be possible for perpetual check to occur if their are other moves for the fl to prevent his king from being checked??
	www.chessvariants.com /ratings/-d.chess-eternal.html (138 words)

	Kasparov Draws Third Game Against Deep Blue
		The strategy involved creating what is called perpetual check, in which Black could keep on checking the white king, move after move, ad infinitum.
		Kasparov didn't see the drawing strategy, said David Levy, an international master, because he felt the computer would have insured that a perpetual check was impossible.
		"But it turned out it was a very deep perpetual check, at least 15 moves down the line." In other words, it was beyond the computer's search, as it was apparently beyond the intuitive powers of the champion.
	www.ishipress.com /blue-3.htm (1193 words)

	Check Engine Light 1998 Audi A4 (Site not responding. Last check: 2007-09-19)
		You just have to live with a perpetual check engine light.
		You just have to live with a perpetual check engine...
		Well if its failed, your check engine light is probably blinking, so tow...
	www.best-in-new-cars.com /OPG/check-engine-light-1998-audi-a4.html (297 words)

	X-bit labs - Print version
		And there was a miracle: the computer took 15 minutes to consider the next move, although it had made all its previous moves in three minutes exactly.
		Kasparov said that he hadn’t believed the computer to choose a perpetual check variant when it had declined this very variant a few moves before, refusing two (!) pawns.
		To make the things worse, he missed an opportunity to announce a perpetual check and was checkmated the next move.
	www.xbitlabs.com /articles/editorial/print/chess.html (5321 words)

	Maurice Ashley on draws (Site not responding. Last check: 2007-09-19)
		In the Oxford Encyclopedia of Chess Games, the earliest draw of any kind was a perpetual check in 1750, although that book has recorded games all the way back to the 1400's.
		If a game ends in a quick perpetual check between two players most everyone knows to be friends, any number of things can be done, from warning to fining the players.
		It’s highly unlikely to have games end in quick perpetuals in the first place so if this were to happen again, then collusion would be clear.
	www.chesscenter.com /twic/ashley03.html (2415 words)

	Check Email (Site not responding. Last check: 2007-09-19)
		Email management is critical when you get hundreds of emails a day.
		Used to check POP3 email accounts, delete mail remotely and anti spam mail.
		Check out rumors, inspirational stories, virus warnings, humorous tales...
	www.comprendemail.com /checkemail.html (124 words)

	T Hermansson vs Judit Polgar (1988)
		The very first move that occured to me was 40.Bxd6, but I followed the advice of Lasker and tried to find a better move, besides, 40.Bxd6 does seem like fl can perpetual check.
		f2+ = is a neat draw by perpetual check.
		This shows that Black lacks the perpetual, and is facing a slow agonizing mate scenario.
	www.chessgames.com /perl/chessgame?gid=1110778 (1464 words)

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