The game with 3 castling manouevres was a mistake.  They must have forgotten that the white king had already castled.

I couldn't find that game in any database.  Did it go something like this?

from ChessVariants

When are you not allowed to castle?

There are a number of cases when castling is not permitted.

1. Your king has been moved earlier in the game.
2. The rook that castles has been moved earlier in the game.
3. There are pieces standing between your king and rook.
4. The king is in check.
5. The king moves through a square that is attacked by a piece of the opponent.
6. The king would be in check after castling.

So the game sited above Heidenfeld - Kerins, Dublin 1973..   must be an illegal game?????

Still CONfused

My second confusion about the game Heidenfeld - Kerins, Dublin 1973,move 32,

at Chess Records  is that the King did a castle 0-0 earl, then moved across the board back to e-1 then, 0-0-0, is that legal?

during the Heidenfeld - Kerins, Dublin 1973,move 32,the queen was attacking the rook,but when the 0-0-0 castle took place the king didn't cross the queen attack. So I guess everything was hunky-dory?

You can't castle through or into a check, so if a queen attacks the b-square and you castle on the queenside, your king won't be tocuhed by that queen.

I haven't checked the game you stated, but try to castle with white here:

Hope this helped ;)