I dont understand why biship didnt take Q

i'm a newbie and i dont understand why black didnt take white queen in this game?  instead of BxQ.. black move was Bf5 ..is there a mate combo that i'm missing?? thanx for the help.. chad..

err they are both grandmaster.. so black blunder?? i see no mate combo..

yes that would be a black blunder if he didn't take but i went to game explorer and found no such game http://www.chess.com/games/results?f=880353

Yeah I would assume this is black blunder. I highly doubt this was a GM game though, was it?

i post the whole game.. i dont know how to post the pgn file.. so here is the txt..

Hebden,Mark (2575) - Bates,Richard (2345) [D00]

BCF-ch 84th Hove (3), 06.08.1997

1.d4 Nf6 2.Nf3 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 Bg4 6.Bd3 c6 7.Ne5 Bf5 8.Qd2 Nbd7 9.h4 h5 10.f3 Rc8 11.Be2 b5 12.Nd1 0-0 13.c3 Ne8 14.Nf2 Nd6 15.g4 hxg4 16.Nexg4 Bxg4 17.Nxg4 f5 18.Ne5 Nxe5 19.dxe5 Nc4 20.Bxc4 dxc4 21.Qg2 Qd5 22.Qxg6 Rcd8 23.Rg1 Qd2+ 24.Kf1 Qd3+ 25.Kg2 Rf7 26.Kh3 e6 27.Qxe6 Kf8 28.Rad1 Re8 29.Qxc6 Qe2 30.Qd6+ Kg8 31.Qd5 1-0

its the 1997 british championship.. they well heden is a gm.

White would mate black with Legal's mate if Bxd1.

http://www.chess.com/games/view?id=824954

That is the game and the one I have in my database and the one I found on chesstempo.com.

My guess is that move 6 in the notation was incorrect and really should have been Be2 and not Bd3.

There is no Legal's Mate in that position.

i dont think it was a error because later in the game u see the bd3 move back to Be2 then later the B x the knight on c4.. that rules out the error.. only possible  ans is a blunder. because i see no clear mate for white if black took on the Q..

If that was incorrect notation then move 11 would also have to have been different.

Posted at the same time :D

Anyway, since this was a master level game I would say the notation was incorrect on the game that got imported into the databases that are on this site, that I have and the one on chesstempo.com (which actually probably came from the same source).

I mean, I guess it is possible that a major blunder was made and neither side saw it but I find that highly unlikely.

I just glanced and assumed :P the notation has to be wrong then, because otherwise white is just down a queen and that doesn't happen at the grandmaster level.

I find this all very interesting. If notation is wrong, then isn't it wrong in at least two places ?

I haven't fully read this following forum but the claim is the move was actually 6. Qd3, which would fit in with the rest of the game.

http://www.ecforum.org.uk/viewtopic.php?f=27&t=648&start=30

the Qd3 doesnt makes sense either.. because later u see the move BXN on c4.. 

the site claim that it was an error but never post the actual game.. errr this hurts my head i'm going to let it go and consider this a blunder lol

This is not the legal trap. The legal trap comes out of the Itallian game transposing into the Phildor defense, which in itself is an e4 opening...

1. e4 e5 2. Nf3 Nc6 3. bc4 d6 4. Nc3 Bg4 5. h3 Bh5 6. Nxe5 BxQ 7. Bxf7+ Ke7 (The only legal move) 8. N5#

On move 8 the queen goes to d2.

refer to my above comment. This is entirely incorrect. Black was a fool for not taking that queen.