I just realized hitting "reply" doesn't send my messages to the list. Sorry Gregor! Tom
---------- Forwarded message ---------- From: Tom F. <[email protected]> Date: Thu, Dec 15, 2011 at 10:57 AM Subject: Re: [Scidb-users] Position search To: Gregor Cramer <[email protected]> I'd have to agree with Gregor here. Sure, it's a small percentage of master games that would involve, oh say for example, a king move to Kf1 and back to e1, but like Murphy's law it will happen. In such games, this would be a crucial point and the two positions (one as described above with no castling rights, and one where the odd King move did not occur but is otherwise the same) are not even close to equal. In addition, and perhaps more to the point, as such variants as Random960 become more and more popular, castling rights are quite a bit different at first blush and a sort of "flag" denoting castling rights is needed. As it stands now, pgn cannot handle the initial position of such games and you will find many Random games in databases that start with an FEN "after castling has occurred." Tom
