diff --git a/SudokuGrid.java b/SudokuGrid.java
index 234f648..6a18966 100644
--- a/SudokuGrid.java
+++ b/SudokuGrid.java
@@ -18,7 +18,7 @@ public class SudokuGrid extends JFrame {
             for (int j = 0; j < GRID_SIZE; j++) {
                 grid[i][j] = new JTextField();
 		
-                TextFilter filtre = new TextFilter(grid[i][j]);
+                TextFilter filtre = new TextFilter(grid[i][j], GRID_SIZE, grid, i, j);
                 
                 grid[i][j].addKeyListener(filtre);
                 grid[i][j].setHorizontalAlignment(JTextField.CENTER);
@@ -53,7 +53,7 @@ public class SudokuGrid extends JFrame {
         // Bouton pour sauvegarder la grille
         JButton save = new JButton("Sauvegarder");
 
-	    SaveButton saver = new SaveButton(GRID_SIZE,grid);
+	SaveButton saver = new SaveButton(GRID_SIZE,grid);
 	
         save.addActionListener(saver);
 
@@ -65,19 +65,12 @@ public class SudokuGrid extends JFrame {
 	
         load.addActionListener(loader);
 
-    
-	// Bouton pour vérifier la grille
-	JButton verify = new JButton("Vérifier");
-
-	VerifButton verifyer = new VerifButton(GRID_SIZE, grid);
-
-	  verify.addActionListener(verifyer);
+	
 	
     
         bouton.add(load);
         bouton.add(save);
-
-	bouton.add(verify);
+	
 
         // Ajout des panneaux à la fenetre
         getContentPane().add(gridPanel, BorderLayout.CENTER);
diff --git a/TextFilter.java b/TextFilter.java
index eb2aab9..83f19ed 100644
--- a/TextFilter.java
+++ b/TextFilter.java
@@ -1,26 +1,49 @@
 import java.awt.event.*;
 import javax.swing.*;
+import java.awt.Color;
 
 
-public class TextFilter extends  KeyAdapter  {
+public class TextFilter extends KeyAdapter {
 
     private JTextField Text;
 
-    public TextFilter (JTextField t) {
+    private int GRID_SIZE;
+
+    private JTextField[][] grid;
+
+    private int row;
+
+    private int col;
+
+    private JTextField Text2;
+
+
+    public TextFilter (JTextField t,int GRID_SIZE, JTextField[][] grid, int i, int j) {
 
 	this.Text = t;
+
+	this.GRID_SIZE = GRID_SIZE;
+
+	this.grid = grid;
+
+	this.row = i;
+
+	this.col = j;
     }
+    
 
     @Override
 
     public void keyTyped(KeyEvent e) {
 	
-	char chaine = e.getKeyChar();
+	char chiffre = e.getKeyChar();
 
 	int taille = this.Text.getText().length();
+
 	
-	if ( ((chaine < '0') || (chaine > '9')) && (chaine != KeyEvent.VK_BACK_SPACE)) {
-	    e.consume();  // ignorer l'événement
+	if ( ((chiffre < '0') || (chiffre > '9')) && (chiffre != KeyEvent.VK_BACK_SPACE)) {
+
+	    e.consume(); // ignorer l'événement   
 	}
 
 	if ( taille >= 1 )  {
@@ -30,4 +53,108 @@ public class TextFilter extends  KeyAdapter  {
 
 	
     }
+
+    @Override
+
+    public void keyPressed(KeyEvent e)  {
+
+	char chiffre = e.getKeyChar();
+
+	if ( (chiffre > '0') || (chiffre < '9') && (chiffre != KeyEvent.VK_BACK_SPACE)) {
+
+	    GrilleValide(chiffre);
+	}
+
+	if ( chiffre == KeyEvent.VK_BACK_SPACE) {
+
+	    if (!Text2.getText().isEmpty()) {
+		
+
+		Text.setBackground(Color.white);
+		Text2.setBackground(Color.white);
+	    }
+	}
+    }
+
+    
+
+    public void GrilleValide(char chiffre) {
+        
+	int evaluant = Integer.parseInt(Character.toString(chiffre));
+
+	// Test de validité sur les lignes
+	for (int row2 = row + 1; row2 < this.GRID_SIZE; row2++) {
+	    if (!grid[row2][col].getText().isEmpty()) {
+		int comparateur = Integer.parseInt(grid[row2][col].getText());
+
+		if (evaluant == comparateur) {
+		    this.grid[row2][col].setBackground(Color.red);
+		    this.grid[row][col].setBackground(Color.red);
+		    this.Text2 = grid[row2][col];
+		}
+	    }
+	}
+	for (int row2 = row - 1; row2 >= 0; row2--) {
+	    if (!grid[row2][col].getText().isEmpty()) {
+		int comparateur = Integer.parseInt(grid[row2][col].getText());
+			    
+		if (evaluant == comparateur) {
+		    this.grid[row2][col].setBackground(Color.red);
+		    this.grid[row][col].setBackground(Color.red);
+		    this.Text2 = grid[row2][col];
+		}
+	    }
+	}
+		    
+	// Test de validité sur les colonnes
+	for (int col2 = col + 1; col2 < this.GRID_SIZE; col2++) {
+	    if (!grid[row][col2].getText().isEmpty()) {
+		int comparateur = Integer.parseInt(grid[row][col2].getText());
+
+		if (evaluant == comparateur) {
+		    this.grid[row][col2].setBackground(Color.red);
+		    this.grid[row][col].setBackground(Color.red);
+		    this.Text2 = grid[row][col];
+		}
+	    }
+
+	}
+	for (int col2 = col - 1; col2 >= 0; col2--) {
+	    if (!grid[row][col2].getText().isEmpty()) {
+		int comparateur = Integer.parseInt(grid[row][col2].getText());
+		
+		if (evaluant == comparateur) {
+		    this.grid[row][col2].setBackground(Color.red);
+		    this.grid[row][col].setBackground(Color.red);
+		    this.Text2 = grid[row][col2];
+		}
+	    }
+	}
+		    
+	// Vérifier la validité dans les régions
+	int rowregion = row/3*3;
+	int colregion = col/3*3;
+	for (int row2 = rowregion; row2 < rowregion + 3; row2++) {
+	    for (int col2 = colregion; col2 < colregion + 3; col2++) {
+			  
+                           
+		if (row2 != row && col2 != col ) {
+                                
+		    if (!grid[row2][col2].getText().isEmpty()) {
+			int comparateur = Integer.parseInt(grid[row2][col2].getText());
+				    
+			if (evaluant == comparateur) {
+			    this.grid[row2][col2].setBackground(Color.red);
+			    this.grid[row][col].setBackground(Color.red);
+			    this.Text2 = grid[row2][col2];
+			}
+		    }
+		}
+	    }
+	}
+    }
 }
+
+
+
+