What's wrong in this EPD?

[Jouni]

[d]3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w - f6 0 1

Makes Chessbase GUI to crash..

Jouni

[ZirconiumX]

You sure you don't mean a FEN?

Matthew:out

[Jouni]

Yes FEN. In Arena:

1. exf6 {+1.19/12 2 Arena Adjudication. Illegal move!} 1-0

Jouni

[Aser Huerga]

[d]3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w - f6 0 1

Makes Chessbase GUI to crash..

Jouni

Maybe the extra blank before f6?

[d]3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w -f6 0 1

It works for me in Arena.

[lucasart]

[d]3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w - f6 0 1

Makes Chessbase GUI to crash..

Jouni

Maybe the extra blank before f6?

[d]3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w -f6 0 1

It works for me in Arena.

On the contrary, the extra blank is essential. Parameters must always be separated by a single space. I would say that

Code: Select all

3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w  - f6 0 1 

is correct, and

Code: Select all

3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w  -f6 0 1 

is incorrect.

If your GUI says otherwise then the bug is in the GUI !

Here is the standard definition of a FEN
http://en.wikipedia.org/wiki/Forsyth%E2 ... s_Notation

Here's what happens when passing both FEN in StockFish 2.1.1

Code: Select all

position fen 3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w  - f6 0 1
position fen 3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w  -f6 0 1     
Error in FEN string: 3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w -f6 0 1 

[hgm]

Extra blank??? There is supposed to be a blank between castling and e.p. field, right? I only see one blank in the posted FEN. If I copy-paste it from the forum to WinBoard, it works with Stockfish. (i.e. I can e.p. capture.) Fairy-Max refuses it, but Fairy-Max uses the old edit command to set up positions, and these have no provision for transmitting e.p. rights, so this is not really a mystery.

[lucasart]

[d]3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w - f6 0 1

Makes Chessbase GUI to crash..

Jouni

your FEN is definitely correct, and there must always be a single space between the different FEN components. One space, not zero, and not 2 or more.
It's strange that commonly used GUIs like ChessBase and Arena have such a simple bug...

[elpapa]

Yes FEN. In Arena:

1. exf6 {+1.19/12 2 Arena Adjudication. Illegal move!} 1-0

Jouni

Arena seems to think it's black's turn to move for some reason, otherwise the move would be legal. Also if white made the illegal move, the game should have ended 0-1.

[Aser Huerga]

On the contrary, the extra blank is essential. Parameters must always be separated by a single space. I would say that

Code: Select all

3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w  - f6 0 1 

is correct, and

Code: Select all

3r2k1/6p1/p3p2p/4Pp2/2P3PP/3pB1n1/PP6/2KR4 w  -f6 0 1 

is incorrect.

If your GUI says otherwise then the bug is in the GUI !

Here is the standard definition of a FEN
http://en.wikipedia.org/wiki/Forsyth%E2 ... s_Notation

It works for me either way coping the FEN to the clipboard and paste in Arena. I simply had the idea that it could have to do with the dash, sorry ...

[Jouni]

OK I found it. I first was sure this is Chessbage bug, then Rybka bug, but it's Komodo bug! It crashes after e.p. move! For to do list Don

Jouni