There was a famous game between Karpov and Korchnoi where Korchnoi castled while his rook was in danger and Karpov challenged the move which was upheld by the tournament director. After that, Karpov's game fell apart. Apparently he was under the impression that when castling the rook couldn't be threatened or move onto or through a square where it would be threatened. The rule applies only to the king, not the rooks.
illigal moves in online chess ?
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please provide us with a chess board, for better understanding..!! previously, there was one, now that comment has been deleted.
I tried to close this topic, by temoving my starting entry.
However the topic keeps going on, i cant delete my own started threats it seams.
anywas repeating in chess are not automaticaly detected, and you have to claim them.. somwhere a button sohuld change from text or so.. i'd never seen it but apperently some have seen it
Lol that was the other thread, .. this thing was that i was thinking castling wasnt allowed while some peace attacks the empty space between king and rook.
I'm not the only one who thought it, but castling is allowed as long as the KING doesnt have to travel trough attacked squares.. in a long castle the rook can go over attacked squares while the king doesnt move over it, and its a legal castle.
let me show here black is allowed to castle
so, black can castle in this condition?
yes since the king doesnt move through a field which is attacked.
The rook does go through such a field, but thats allowed in the castle rules
Its only the king who is not allowed to go over squares that are attacked.
RainbowRising wrote:
CPawn wrote:
bigpoison wrote:
How can you be rated almost 1900 and not know this?
Oh, never mind, I've looked at your tactics trainer rating. I get it.
Victor Korchnoi called the chief arbiter over in a game in his second match against Karpov and asked if he can castle in the currect position. It would have been a legal castle, but Korchnoi asked. We all make mistakes, ratings dont mean you always understand the rules, or will always make the right decision.
He did that to annoy and distract his opponent ;)
According to this source there were different Russian castling rules at the time hence the need for clarification.
"Korchnoi confirmed he did ask the question at that point, explaining that the Russian chess rules left the situation a little ambiguous, and it was the first time the situation had occurred in his games. Considering the levels of tension surrounding the match and this game in particular, Korchnoi thought it best to confirm with the match referee before making the move."
Korchnoi's understanding may have been ambiguous (though I don't know why he would be, but he apparently was), but I am doubting that there were "Russian" rules that differed from the standard FIDE castling rules we are all aware of.
Why would there be different rules in Russia for such a major part of the game? And why would Korchnoi have been playing under them, and when if ever?
So are we to believe that the Russians in their internal events were using a different castling rule? The 1970s are not ancient times either--totally modern and standardized chess then. Why would they do that? It makes no sense.
I'm just not buying Korchnoi's explanation.
The text below is not my text can be found here http://www.reference.com/browse/wiki/Castling
Castling is a special move in the game of chess involving the king and either of the original rooks of the same color. Castling consists of moving the king two squares towards a rook, then moving the rook onto the square over which the king crossed. Castling is considered a king move .
The notation for castling, in both the descriptive and the algebraic systems, is 0-0 with the kingside rook and 0-0-0 with the queenside rook. In PGN, O-O and O-O-O are used instead. Castling on the kingside is sometimes called castling short and castling on the queenside is called castling long; the difference being based on whether the rook moves a short distance (two squares) or a long distance (three squares) .
Castling is in most non-English speaking nations known as 'Rochieren/Rochada/Roque', while 'long/short castling' are used in those countries to refer to 'queenside/kingside castling'. Castling is a relatively recent European innovation in chess, dating from the 14th or 15th century. Thus, the Asian versions of chess do not have such a move.
Requirements
Castling is permissible only if all of the following conditions hold:
- The king must never have moved;
- The chosen rook must never have moved;
- There must be no pieces between the king and the chosen rook;
- The king must not currently be in check.
- The king must not pass through a square that is under attack by enemy pieces.
- The king must not end up in check (true of any legal move).
- The king and the chosen rook must be on the same rank.
It is a common mistake to think that the requirements for castling are even more stringent than the above. To clarify:
- The king may have been in check previously, as long as it isn't in check at the time of castling.
- The rook involved in castling may be under attack.
- The rook involved in castling may move over an attacked square (a situation possible only with queenside castling).
Strategy
Castling is an important goal in the early part of a game, because it serves two valuable purposes: it moves the king into a safer position away from the center of the board, and it moves the rook to a more active position in the center of the board.
The choice as to which side to castle often hinges on an assessment of the trade-off between king safety and activity of the rook. Kingside castling is generally slightly safer, because the king ends up closer to the edge of the board and all the pawns on the castled side are defended by the king. In queenside castling, the king is placed closer to the center and the pawn on the a-file is undefended; the king is thus often moved to the b-file to defend the a-pawn and to move the king away from the center of the board. In addition, queenside castling requires moving the queen; therefore, it may take slightly longer to achieve than kingside castling. On the other hand, queenside castling places the rook more effectively — on the central d-file. It is often immediately active, whereas with kingside castling a tempo may be required to move the rook to a more effective square.
It is common for both players to castle kingside, and rare for both players to castle queenside. If one player castles kingside and the other queenside, it is called opposite castling. Castling on opposite sides usually results in a fierce fight as both players' pawns are free to advance to attack the opposing king's castled position without exposing the player's own castled king. An example is the Dragon Variation of the Sicilian Defence.
If the king is forced to move before it has the opportunity to castle, the player may still wish to maneuver the king towards the edge of the board and the corresponding rook towards the center. When a player takes three or four moves to accomplish what castling would have accomplished in one move, it is sometimes called artificial castling, or castling by hand.
Technical rules
Under the strict touch-move rules enforced in most tournaments, castling is considered a king move. A player who intends to castle but touches the rook first would be committed to make a rook move, and thus will not be permitted to perform the castling. Therefore, the correct way to castle is to first move the king. As usual, the player's mind may change between all legal destination squares for the king until it is released. When the two-square king move is completed however, the player has formally chosen to castle (if it is legal), and the rook must be moved accordingly. A player who performs a forbidden castling must return the king and the rook to their original places and then move the king, if there is another legal king move .
It is also required by the official rules that the entire move be completed using only a single hand. Neither of these rules is commonly enforced in casual play, nor commonly known by non-competitive players .
The right to castle must be the same in all three positions for a valid draw claim under the threefold repetition rule.
Chess variants and problems
Some chess variants, for example Chess960, have modified castling rules to handle modified starting positions. Castling can also be adapted to large chess variants, like Capablanca chess, which is played on 10x8 board.
In chess problems, castling is assumed to be allowed if it appears possible, unless it can be proved by retrograde analysis that either the king or chosen rook has previously moved.
Notable castlings
- In this game between Yuri Averbakh and Cecil Purdy, Black castled queenside, and Averbakh pointed out that the rook passed over a square controlled by White, so it was illegal. Purdy proved that the castling was legal since this applies only to the king, to which Averbakh replied "Only the king? Not the rook?"
- Viktor Korchnoi, in his 1974 Candidates final match with Anatoly Karpov, famously asked the arbiter if castling was legal when the castling rook was under attack. The answer was in the affirmative, and Korchnoi ended up winning the game.
- Three castlings occurred in the game between Wolfgang Heidenfeld and Nick Kerins, in Dublin in 1973. Of course, the third one was illegal. See this link, "Greatest number of castlings".
- Tim Krabbé composed a joke chess problem containing vertical castling (king on e1, promoted rook on e8). The loophole in the definition of castling upon which this problem was based was removed by the new requirement that the castling rook must occupy the same rank as the king.
Variations throughout history
The rule of castling has varied by location and time. In medieval England, Spain, and France, the white king was allowed to jump to c1, c2, d3, e3, f3, or g1, if no capture was made, the king was not in check, and did not move over check. (The black king could move similarly.) In Lombardy, the white king could jump an additional square to b1 or h1 or to a2 (and equivalent squares for the black king). Later in Germany and Italy, the king move was combined with a pawn move.
In Rome from the early 17th century until the late 19th century, the rook could be placed on any square up to and including the king's square, and the king could be moved to any square on the other side of the rook. This was called "free castling".
In the Göttingen manuscript (ca. 1500) and a game published by Luis Ramirez de Lucena in 1498, castling consisted of two moves: first the rook and then the king.
The current version of castling was established in France in 1620 and England in 1640 .
OK i hope its clear now to all
PeterArt wrote:
Yup. The king does not move into or through check in your example.
Averbakh,Yuri - Purdy,Cecil
AUS-ch (4), Adelaide 1960.10.08"]
A341. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. g3 Nxc3 5. bxc3 c5 6. Bg2 Nc6 7. Rb1 e5 8.
Qa4 Qc7 9. Bxc6+ Qxc6 10. Qxc6+ bxc6 11. Nf3 f6 12. d3 c4 13. dxc4 Be6 14. Nd2
O-O-O 15. Nb3 Bxc4 16. Be3 Rd7 17. f3 Be7 18. Kf2 c5 19. Na5 Ba6 20. Nc6 Bd6
21. Rhd1 Kc7 22. Nxa7 Ra8 23. Nb5+ Bxb5 24. Rxb5 Kc6 25. Rb2 Rda7 26. Rdb1 Rxa2
27. Rb6+ Kc7 28. Rb7+ Kc8 29. Rxg7 R8a7 30. Rxa7 Rxa7 31. Rb5 Rc7 32. c4 Kd7
33. Ra5 Kc6 34. Ra6+ Kd7 35. g4 Rb7 36. h4 Rb4 37. Ra7+ Ke6 38. Rxh7 Rxc4 39.
h5 Ra4 40. Rh8 Ra7 41. h6 Rc7 42. h7 Kd5 43. Bd2 Rd7 44. Ba5 c4 45. e4+ Kd4 46.
Rd8 Rxh7 47. Rxd6+ Kc5 48. Rxf6 1-0
You can't make illegal moves on a site like this. The software won't allow it. So if a move is allowed that you thought was illegal it just shows that you were mistaken, as it is very unlikely that the code that decides what is legal and what is not is mistaken. We have known how to compute legal moves and check moves for legality since the 1950s
ok
I see the point, never looked at it this way.
I used to think castling was possible only if nothing in between king and rook was striking it, now it seams in this situation, the king isnt hindered only the rook was. Pretty odd situation, and so i thought the site was making an error.
And just to some of you i'm far from mister wise guy, its just that i thought the computer who performs control here made an error, well not only computers make errors as it seams also people like me.
Don't worry, the rules for queenside castling are notoriously confusing. Even Yuri Averbakh (USSR champion several times, and other titles) made the mistake that you did.