public string GetFen()
{
var sb = new StringBuilder();
sb.Append(Board.GetFenCode(FenMode.Classical));
sb.Append(" ");
sb.Append(WhosTurn == PlayerAffiliation.White ? 'w' : 'b');
sb.Append(" ");
var fenWhite = White.GetFenCastle();
var fenBlack = Black.GetFenCastle();
if (fenWhite == string.Empty && fenBlack == string.Empty)
{
sb.Append("-");
}
else
{
sb.Append(fenWhite);
sb.Append(fenBlack);
}
sb.Append(" ");
sb.Append("-");
sb.Append(" ");
sb.Append(HalfmovesSinceLastCaptureOrPawn);
sb.Append(" ");
sb.Append(Movecounter);
sb.Append(" ");
return(sb.ToString());
}