Author: Andreas Stabel
Date: 08:41:13 02/09/00
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On February 09, 2000 at 11:11:32, Robert Hyatt wrote: >On February 09, 2000 at 10:57:04, James Robertson wrote: > >>On February 09, 2000 at 10:52:20, Andreas Stabel wrote: >> >>>I've made a program that takes a file with FEN positions and inverts the >>>colours, castlings, en passant, side to move and so on to generate an >>>equivalent position. The program is also able to exchange right and left >>>sides of the board, but then castling info is lost. I is even possible to >>>rotate the board 90 degrees, but only if there are no pawns ! >>> >>>The program is free for anybody, with source. Just e-mail me at anst@dolphin.no >>> >>>The interface is simple and the program may easily be compiled on any machine >>>with a C compiler. If you want, you can get a Windows or SCO-Unix (Intel) >>>executable. >>> >>>The program has the following interface: >>>Usage: rfen <input file> [-<options>] >>>Legal options are: >>> c: Generate crafty setboard output >>> e: Output warnings and info about errors in format >>> f: Generate FEN output (Default) >>> i: Invert board and black & white pieces >>> m: Mirror right and left side (Castling is lost) >>> r: Rotate board clockwise (Only if no pawns) >>> s: Turn off strict checking of FEN >>> v: Verbose >>> >>>To invert all FEN positions in a file type: >>>rfen -ei file.fen > newfile.fen >>> >>>I hope somebody finds this useful >>>Best regards >>>Andreas Stabel >> >>This program sounds really great! >> >>James :) > > >Crafty will do this with a little work. Enter a position. Type "savepos x1" >then type 'flip' which inverts the board (black/white pieces move to the >opposite side of the board and change colors.) Type savepos x2. Then type >'flop' which flops the board a-file to h-file leaving piece colors alone. > >etc. > >I use this to discover unexpected asymmetries in the eval, as a debugging >tool. When somebody ask - What if I tried this or that or perhaps this would be a good idea, Hyatt always answers that he tried this in '72 or something, so I should have known that Mr. Hyatt already had done this :) Well, the work is done, and my program can rotate and process a whole file with one command too, so perhaps somebody still will find it useful :) Regards Andreas Stabel
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