Chess Question

I have been playing for a while, but tonight, i was told something i did not agree with, and would like some Clarification.

Is it legal for an opposing player to castle if one of my pieces is attacking their rook. The person I was playing tonight( Not On-line) said they could castle because their King way not crossing a square that is being attacked. Is this the case? I am not sure anymore. Your assistance in this matter would be appreciated.

yes it is possible.

The king squares are the ones you have to be concerned about. If you are attacking the rook, but the king is not in check, the square the king is moving to is not attacked, and the square the king is skipping over is also not attacked, then the castling is legal (assuming neither the king nor the relevant rook has moved).

This is a common point of confusion people have about castling.

Put more simply
the king or the squares it crosses must not be under threat
also neither the king nor rook must have already moved
i.e. yes you can castle despite the rook being under threat as the king is not in check and the squares in between are not under threat

Now check out this curiosity:

Heidenfeld - Kerins, Dublin 1973

1.e4 e6 2.d4 d5 3.Be3 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Nf3 Qb6 8.Qd2 c4 9.Be2 Na5 10.O-O f5 11.Ng5 Be7 12.g4 Bxg5 13.fxg5 Nf8 14.gxf5 exf5 15.Bf3 Be6 16.Qg2 O-O-O 17.Na3 Ng6 18.Qd2 f4 19.Bf2 Bh3 20.Rfb1 Bf5 21.Nc2 h6 22.gxh6 Rxh6 23.Nb4 Qe6 24.Qe2 Ne7 25.b3 Qg6+ 26.Kf1 Bxb1 27.bxc4 dxc4 28.Qb2 Bd3+ 29.Ke1 Be4 30.Qe2 Bxf3 31.Qxf3 Rxh2 32.d5 Qf5 33.O-O-O Rh3 34.Qe2 Rxc3+ 35.Kb2 Rh3 36.d6 Nec6 37.Nxc6 Nxc6 38.e6 Qe5+ 39.Qxe5 Nxe5 40.d7+ Nxd7 0-1

Originally posted by Mephisto2
Now check out this curiosity:

Heidenfeld - Kerins, Dublin 1973

1.e4 e6 2.d4 d5 3.Be3 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Nf3 Qb6 8.Qd2 c4 9.Be2 Na5 10.O-O f5 11.Ng5 Be7 12.g4 Bxg5 13.fxg5 Nf8 14.gxf5 exf5 15.Bf3 Be6 16.Qg2 O-O-O 17.Na3 Ng6 18.Qd2 f4 19.Bf2 Bh3 20.Rfb1 Bf5 21.Nc2 h6 22.gxh6 Rxh6 23.Nb4 Qe6 24.Qe2 Ne7 25.b3 Qg6+ 26.Kf1 Bxb1 27.bxc4 dxc4 ...[text shortened]... -O-O Rh3 34.Qe2 Rxc3+ 35.Kb2 Rh3 36.d6 Nec6 37.Nxc6 Nxc6 38.e6 Qe5+ 39.Qxe5 Nxe5 40.d7+ Nxd7 0-1

Originally posted by o0obruceleeo0o
I dont see the problem?

Chess Answer


Yes.

Originally posted by Mephisto2
Now check out this curiosity:

Heidenfeld - Kerins, Dublin 1973

1.e4 e6 2.d4 d5 3.Be3 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Nf3 Qb6 8.Qd2 c4 9.Be2 Na5 10.O-O f5 11.Ng5 Be7 12.g4 Bxg5 13.fxg5 Nf8 14.gxf5 exf5 15.Bf3 Be6 16.Qg2 O-O-O 17.Na3 Ng6 18.Qd2 f4 19.Bf2 Bh3 20.Rfb1 Bf5 21.Nc2 h6 22.gxh6 Rxh6 23.Nb4 Qe6 24.Qe2 Ne7 25.b3 Qg6+ 26.Kf1 Bxb1 27.bxc4 dxc4 ...[text shortened]... -O-O Rh3 34.Qe2 Rxc3+ 35.Kb2 Rh3 36.d6 Nec6 37.Nxc6 Nxc6 38.e6 Qe5+ 39.Qxe5 Nxe5 40.d7+ Nxd7 0-1

Chess Advice


Learn the rules.

Originally posted by Bowmann
Thief!

Originally posted by wormwood
three times castling in one game.

Originally posted by FabianFnas
No no, that is not possible!

Originally posted by FabianFnas
No no, that is not possible!

Originally posted by Bowmann
Legal or not. It is possible.