diff --git a/src/backend/Board.java b/src/backend/Board.java
index 270678e..4ec9e04 100644
--- a/src/backend/Board.java
+++ b/src/backend/Board.java
@@ -21,9 +21,11 @@ public class Board {
 	private boolean whiteRookQueensideMoved = false;
 	private boolean blackRookKingsideMoved = false;
 	private boolean blackRookQueensideMoved = false;
+	private boolean isInCheckState = false;
+	private boolean isCheckmateState = false;
 	private ArrayList<Move> moveHistory = new ArrayList<>();
 	
-	private Piece getPieceAt(int x, int y) {
+	public Piece getPieceAt(int x, int y) {
 	    for (Piece piece : pieces) {
 	        if (piece.getX() == x && piece.getY() == y) {
 	            return piece;
@@ -291,6 +293,14 @@ public class Board {
 	public boolean isTurnWhite() {
 		return isTurnWhite;
 	}
+	
+	public boolean isInCheckState() {
+	    return isInCheckState;
+	}
+
+	public boolean isCheckmateState() {
+	    return isCheckmateState;
+	}
 
 	public void setPiece(boolean isWhite, PieceType type, int x, int y) {
 		if (x < 0 || x >= width || y < 0 || y >= height) {
@@ -577,16 +587,22 @@ public class Board {
 	                turnNumber++;
 	                isTurnWhite = !isTurnWhite;
 	                
-	                // Check for checkmate or stalemate after the move
-	                if (isCheckmate()) {
-	                    // Game over - checkmate
-	                    // You could set a game state flag here or trigger a UI event
-	                    System.out.println("Checkmate! " + (isTurnWhite ? "Black" : "White") + " wins!");
+	             // Vérifier si le roi est en échec
+	                isInCheckState = isInCheck(isTurnWhite);
+
+	                // Vérifier si c'est un échec et mat ou un pat
+	                if (isInCheckState) {
+	                    isCheckmateState = isCheckmate();
+	                    if (isCheckmateState) {
+	                        System.out.println("Checkmate! " + (!isTurnWhite ? "White" : "Black") + " wins!");
+	                    } else {
+	                        System.out.println("Check8 " + (isTurnWhite ? "white" : "Black") + "!");
+	                    }
 	                } else if (isStalemate()) {
-	                    // Game over - stalemate
-	                    // You could set a game state flag here or trigger a UI event
 	                    System.out.println("Stalemate! Game is a draw.");
 	                }
+	                
+	            
 	            }
 	            
 	            // Reset selection regardless of whether move was valid
@@ -620,7 +636,10 @@ public class Board {
 	}
 
 	private boolean hasLegalMoves(boolean isWhite) {
-	    for (Piece piece : pieces) {
+	    // Créer une copie de la liste pour éviter les modifications concurrentes
+	    ArrayList<Piece> piecesToCheck = new ArrayList<>(pieces);
+	    
+	    for (Piece piece : piecesToCheck) {
 	        if (piece.isWhite() == isWhite && !getValidMoves(piece).isEmpty()) {
 	            return true;
 	        }