private static string ToRan(Move move, IPosition pos)
{
var from = move.GetFromSquare();
var to = move.GetToSquare();
var notation = new StringBuilder(12);
if (move.IsCastlelingMove())
{
notation.Append(ECastlelingExtensions.GetCastlelingString(to, from));
}
else
{
var pt = move.GetMovingPieceType();
if (pt != EPieceType.Pawn)
{
notation.Append(pt.GetPieceChar());
}
notation.Append(from.ToString());
if (move.IsEnPassantMove())
{
notation.Append("ep");
notation.Append(from.FileChar());
}
else if (move.IsCaptureMove())
{
if (pt == EPieceType.Pawn)
{
notation.Append(from.FileChar());
}
notation.Append('x');
notation.Append(move.GetCapturedPiece().Type().GetPieceChar());
}
else
{
notation.Append('-');
}
notation.Append(to.ToString());
if (move.IsPromotionMove())
{
notation.Append('=');
notation.Append(move.GetPromotedPiece().GetUnicodeChar());
}
}
if (pos.InCheck)
{
notation.Append(pos.GetCheckChar());
}
return(notation.ToString());
}