# Queen side castle

Ichmude
Only Chess 11 Jun '19 06:33
1. 11 Jun '19 06:33
Why is that an illegal move on this sight? What is the damn malfunction?
2. 11 Jun '19 06:48
Hi Ichmude,

If during castling the King passes over a square that is being attacked, in the case
of Queen side castling, that is the squares d1, c1 and b1. then it is not allowed.
3. 11 Jun '19 07:41
@ichmude said
Why is that an illegal move on this sight? What is the damn malfunction?
Here is a complete game of yours where both people castled ong.

4. BigDoggProblem
Just...the Dogg
11 Jun '19 14:12
@greenpawn34 said
Hi Ichmude,

If during castling the King passes over a square that is being attacked, in the case
of Queen side castling, that is the squares d1, c1 and b1. then it is not allowed.
b1 is OK. The King stops short of it.
5. 11 Jun '19 16:482 edits
@BigDoggProblem

I know, I was away with the fairies there. Stopped what I was doing about 30
minutes ago and remembered what I had said. ðŸ˜€

Expecting someone to come back and say:
"Hey: when I castle Queen side my King stops on c1 , what is wrong?"
6. 11 Jun '19 17:171 edit
@greenpawn34

Reminds me of some kids I watched playing when I first started to try to learn to play chess. One kid castles with his queen to b1 and rook to c1. He called it quastling and believed it was a legal move.
7. byedidia
Mister Why
11 Jun '19 20:52

Quastling! I can't wait to use that in one of my games!
8. wolfgang59
Mr. Wolf
11 Jun '19 23:57
Yuri Averbakh vs. Cecil John Seddon Purdy
Australian Championship |Adelaide, Australia | Round 4 |1960

According to GM Larry Evans and his book "Chess Catechism":

"Black castled queenside. Averbakh pointed out that the rook passed
over a square controlled by White and thought 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?"

http://www.chessgames.com/perl/chessgame?gid=1329062&kpage=1
9. Paul Leggett
Chess Librarian
12 Jun '19 01:06
@wolfgang59 said
Yuri Averbakh vs. Cecil John Seddon Purdy
Australian Championship |Adelaide, Australia | Round 4 |1960

According to GM Larry Evans and his book "Chess Catechism":

"Black castled queenside. Averbakh pointed out that the rook passed
over a square controlled by White and thought it was illegal. Purdy
proved that the castling was legal since this applies onl ...[text shortened]... "Only the king? Not the rook?"

http://www.chessgames.com/perl/chessgame?gid=1329062&kpage=1
I remember reading about Korchnoi questioning the rules about queenside castling in a game once as well, so the rule must be a little fuzzier than one would believe.
10. venda
Dave
12 Jun '19 12:13
As far as I know the rule regarding "checked" squares only applies to the King so the roook can pass through a square controlled by the opponent
11. Russ
RHP Code Monkey
12 Jun '19 12:42
I've been R&Ding chess variant support - castling support for some variants can get quite a bit more complex. For example : double chess, a 16*8 board with 4 rooks each.

If this ever sees the light of day, future me will surely regret it...I can only imagine the number of support questions regarding castling.
12. moonbus
Uber-Nerd
12 Jun '19 16:51
@ichmude said
Why is that an illegal move on this sight? What is the damn malfunction?
The malfunction is the one sitting in front of the monitor. Learn the rules and this problem will go away.
13. mwmiller
RHP Member No.16
12 Jun '19 18:22

Removed by poster

14. mwmiller
RHP Member No.16
13 Jun '19 01:00
EDIT:
Let me try this again. I did not do a good job of proof-reading my previous post.

The only restriction on the rook that is castling is that it cannot have already been moved.

The king cannot have already moved, and he also cannot castle while in check and he cannot move across or end up on a square that is under attack by the opponent.

And lastly, all squares between the king and the rook that is involved in castling must be empty.

I believe those are all of the rules for castling.
15. moonbus
Uber-Nerd
13 Jun '19 06:55
@russ said
I've been R&Ding chess variant support - castling support for some variants can get quite a bit more complex. For example : double chess, a 16*8 board with 4 rooks each.

If this ever sees the light of day, future me will surely regret it...I can only imagine the number of support questions regarding castling.
Be sure to include quastling.