very basic pgn export

app/src/main/java/chess/pgn/PiecePgnName.java

@@ -0,0 +1,43 @@
+package chess.pgn;
+
+import chess.model.PieceVisitor;
+import chess.model.pieces.Bishop;
+import chess.model.pieces.King;
+import chess.model.pieces.Knight;
+import chess.model.pieces.Pawn;
+import chess.model.pieces.Queen;
+import chess.model.pieces.Rook;
+
+public class PiecePgnName implements PieceVisitor<String> {
+
+	@Override
+	public String visitPiece(Bishop bishop) {
+		return "B";
+	}
+
+	@Override
+	public String visitPiece(King king) {
+		return "K";
+	}
+
+	@Override
+	public String visitPiece(Knight knight) {
+		return "N";
+	}
+
+	@Override
+	public String visitPiece(Pawn pawn) {
+		return "";
+	}
+
+	@Override
+	public String visitPiece(Queen queen) {
+		return "Q";
+	}
+
+	@Override
+	public String visitPiece(Rook rook) {
+		return "R";
+	}
+	
+}