Play chess online, chess games database, chess teams, board games, chess league, free chess online, free online chess games, chess games, chess clubs, online games, chess puzzles and more...

Tags: play chess online, online chess, online chess, online chess, online chess, chess online, sudoku

Chess Forum
nikto.net   << online chess - < chess - chess > - chess online >>
FromMessage
Posted by rich_sposato
nikto.net

6/29/2008
21:32:50

Play online chess
Subject: Can you castle onto an occupied square?

Message:
Can you legally castle if your king's target square is occupied by an enemy piece?

I looked up the castling rules on Wikipedia and FIDE, and found nothing to prohibit the king from castling onto an occupied square. I assume the king would capture the enemy piece on the target square just as it would capture a piece on any square during normal moves.

Wikipedia says: (en.wikipedia.org)
Castling is permissible only if all of the following conditions hold:
1 The king must never have moved.
2 The chosen rook must never have moved.
3 There must be no pieces between the king and the chosen rook.
4 The king must not currently be in check.
5 The king must not pass through squares that are under attack by enemy pieces.
6 The king must not end up in check (true of any legal move).
7 The king and the chosen rook must be on the same rank.

FIDE says: (www.fide.com)
The right for castling has been lost:
1. if the king has already moved, or
2. with a rook that has already moved
Castling is prevented temporarily if:
1. the square on which the king stands, or the square which it must cross, or the square which it is to occupy, is attacked by one or more of the opponent`s pieces.
2. there is any piece between the king and the rook with which castling is to be effected.

Has this situation ever occurred in official games?

If the king may capture while castling, this would be the only situation in which 3 pieces are touched in a single move.
1. the king
2. the rook
3. an enemy piece


Posted by premium_steve
nikto.net

6/29/2008
21:47:49

Play online chess


Message:
i think condition 3 in the wikipedia entry is the answer to the question, though i am not completely sure.

since there is a piece between the king and rook (an enemy piece), i don't think castling would be possible.

did this come up in one of your games, rich?
it would be a fun move to make, all the same. :)


Posted by rich_sposato
nikto.net

6/29/2008
21:57:41

Play online chess


Message:
Hi Steve,

Yeah, I see. When I first read that, I was thinking only of the square which the king would cross as between. Now that I think about this again, I see that of course the king will land on a square between the king's and rook's starting positions, so any enemy piece there will prevent that.

No, it did not come up in any game I played.

Thanks,

Rich


Posted by chessnovice
nikto.net

6/30/2008
10:18:33

Play online chess
...

Message:
The rules specific to castling are designed only to express the rules unique to the move. This idea of yours falls under a more fundamental rule, which is applied to castling under the umbrella of any move.

If you check the FIDE link you provided, and you'll see that it says:
"Article 3.1: It is not permitted to move a piece to a square occupied by a piece of the same colour. If a piece moves to a square occupied by an opponent`s piece the latter is captured and removed from the chessboard as part of the same move. A piece is said to attack an opponent's piece if the piece could make a capture on that square according to Articles 3.2 to 3.8. A piece is considered to attack a square, even if such a piece is constrained from moving to that square because it would then leave or place the king of its own colour under attack."


Posted by cyberknight999
nikto.net

6/30/2008
19:15:09

Play online chess
It would be a cool move but...

Message:
It is clearly not legal based on:

FIDE Article 3.8.2.2.b


Posted by kinderboy
nikto.net

9/01/2008
15:18:46

Play online chess
ITS NOT LEGAL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Message:
Thhe rook would have to pass over another piece to make the move in question.

Posted by throneseeker
nikto.net

10/09/2008
19:35:25

Play online chess
Castling

Message:
Pure logic suggests that if the King's target square is occupied by an opposing piece then there must be a piece between the King and chosen Rook. i.e that piece is either on g1 (in which instance it is between the King's Rook and the King) or on c1 (in which instance it is between the Queen's Rook and the King). If a piece is on the target square, castling to that square would not be legal. One could, however, castle to the opposite side provided no other circumstance exists which prohibits such a move.

The short answer to the question is NO as has been stated in a variety of fashions.


Posted by tugger
nikto.net

10/10/2008
09:45:34

Play online chess
NO

Message:


Posted by ccmcacollister
nikto.net

10/10/2008
10:07:28

Play online chess
...YES~!

Message:
... about this matter, you CAN capture a piece by o-o-o, but only if you are on a GK Analysis
Board! Or at least it used-to-be possible. It may have changed, but I was surprised to actually
have personally seen it work in the past.
Other than that, as they say, #3 Wiki and #2 FIDE pretty much cover the matter. Tho that would
be a fun game alteration for skittles play, to be able to o-o or o-o-o and capture anything the
King or Rook land on (or sweep across, on b1 or b8 for eg.!?). Also "Uncastles" can add an
interesting twist as a Chess variant. A bit harder to pin that king down ...

Does the GK bit still work? Well I don't know offhand.





Chess news:

An Annual Generational Clash Is Underway -- Chess was once an old man’s game, but that has not been true for many years. Now, chess is a young man’s game and in any contest between chess players of different ages, the younger ones are often the favorites. Still, that does not diminish the intrigue of any clash of generations, which is why the NH Tournament in the Netherlands has become so popular. Now in its fifth year, the chess tournament pits a group of younger players (“rising stars”) against a group of older players (“experience”). Each competitor in one group plays each of the competitors in the other group — a format called a Scheveningen System after the Dutch city where it was first used. In addition to fighting for ...

Hats off to Gata Kamsky -- The US chess champion Gata Kamsky triumphed in style to capture the Grenke Leasing World Rapid Chess Championship at Mainz. The 36 year-old scored 10/11 against mainly world class opposition. Kamsky wore his favourite New York cap throughout the event and it obviously brought him luck. Kamsky was one of a dozen chess players on 5/5 after day one. He reeled off four more wins, defeating world number five Levon Aronian with black and Sergey Karjakin with white thanks to a deep queen sacrifice. In round nine he needed a little luck to defeat Rustam Kazimdzhanov with black and then drew with Vugar Gashimov. In the last round he managed to hold the draw, after a bit of a struggle, with ...

Alejandro Ramirez wins US Open -- Chess Grandmaster Alejandro Ramirez of Costa Rica won the 111th U.S. Open in Irvine last Sunday. Ramirez, a recent graduate of the University of Texas at Dallas, yielded draws only to top-seeded GM Varuzhan Akobian and his former UTD teammate, IM Julio Catalino Sadorra. His 8-1 score included a victory against GM Melikset Khachiyan and a crucial eighth-round upset of GM Alexander Shabalov. Akobian, Sadorra, Shabalov and 14-year-old chess phenom Daniel Naroditsky shared second place at 7 1/2-1 1/2. Southern Californians Khachiyan, IM Andranik Matikozyan, IM Enrico Sevillano, masters Joel Banawa, Matthew Beelby, Ankit Gupta and Bryan Williams Paulsen and top expert Vanessa West ...