diff --git a/android/build.gradle b/android/build.gradle
index 58a8c74..713d7f6 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -26,6 +26,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }
diff --git a/lib/chess/chess_board.dart b/lib/chess/chess_board.dart
index 25f226a..517a930 100644
--- a/lib/chess/chess_board.dart
+++ b/lib/chess/chess_board.dart
@@ -35,8 +35,11 @@ class ChessBoard extends StatelessWidget {
   Widget build(BuildContext context) {
     log("ChessBoard's build()");
 
-    return Column(
-        children: _buildBoard(bState.bottomColor == ChessColor.black));
+    return Container(
+      decoration: const BoxDecoration(
+          boxShadow: [BoxShadow(color: Colors.black, offset: Offset(10, 10))]),
+      child: _buildBoard(bState.bottomColor == ChessColor.black),
+    );
   }
 
   Row _buildChessRow(int rowNo, bool flipped) {
@@ -56,7 +59,7 @@ class ChessBoard extends StatelessWidget {
     }
   }
 
-  List<Row> _buildBoard(bool flipped) {
+  Column _buildBoard(bool flipped) {
     List<Row> chessBoard = <Row>[];
 
     if (!flipped) {
@@ -69,7 +72,7 @@ class ChessBoard extends StatelessWidget {
       }
     }
 
-    return chessBoard;
+    return Column(children: [...chessBoard]);
   }
 
   ChessSquare getSquareAtCoordinate(ChessCoordinate coord) {
diff --git a/lib/chess_bloc/chess_bloc.dart b/lib/chess_bloc/chess_bloc.dart
index fe3bf62..391c20b 100644
--- a/lib/chess_bloc/chess_bloc.dart
+++ b/lib/chess_bloc/chess_bloc.dart
@@ -112,13 +112,13 @@ class ChessBloc extends Bloc<ChessEvent, ChessBoardState> {
     var pieceAtStartSquare = ChessPosition.getInstance().getPieceAt(
         ChessCoordinate(event.startSquare.column, event.startSquare.row));
     if (pieceAtStartSquare == null) {
-      log('received a promotion but piece on start square was empty');
+      log('received a promotion but start square was empty');
       return;
     }
 
     ChessPieceClass pieceClass = ChessPieceClass.none;
     for (var piece in chessPiecesShortName.entries) {
-      if (piece.value.toLowerCase() == event.piece) {
+      if (piece.value == event.piece) {
         pieceClass = piece.key.pieceClass;
         break;
       }
@@ -169,8 +169,7 @@ class ChessBloc extends Bloc<ChessEvent, ChessBoardState> {
       OwnPromotionPlayed event, Emitter<ChessBoardState> emit) {
     var apiMove = event.move.toApiMove();
     var shorNameForPiece = chessPiecesShortName[
-            ChessPieceAssetKey(pieceClass: event.pieceClass, color: myColor!)]!
-        .toLowerCase();
+        ChessPieceAssetKey(pieceClass: event.pieceClass, color: myColor!)]!;
     apiMove.promotionToPiece = shorNameForPiece;
     var message = ApiWebsocketMessage(
       type: MessageType.move,