diff --git a/app/src/main/java/com/example/mastermind/game/GameView.java b/app/src/main/java/com/example/mastermind/game/GameView.java
index e1ef78a..443a9bb 100644
--- a/app/src/main/java/com/example/mastermind/game/GameView.java
+++ b/app/src/main/java/com/example/mastermind/game/GameView.java
@@ -1,6 +1,8 @@
 package com.example.mastermind.game;
 
 import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
@@ -22,6 +24,9 @@ public class GameView extends View {
     private Bot theBot;
     private Paint circle;
     private boolean state;
+    private Bitmap cancelBtn;
+    private Bitmap backBtn;
+    private Bitmap validBtn;
     public GameView(Context context,Saisie saisie,Grille grille, boolean bot) {
         super(context);
         this.saisie=saisie;
@@ -85,6 +90,9 @@ public class GameView extends View {
 
         //TODO: ajout des boutons
         //Test de bouton valider
+        /*validBtn = BitmapFactory.decodeResource(getResources(), R.drawable.valid_button);
+
+        canvas.drawBitmap(validBtn, this.getWidth()/2+this.getWidth()/11-this.getWidth()/13, this.getHeight()/2+this.getHeight()/16+this.getWidth()/13, null);*/
         this.circle.setColor(this.getResources().getColor(R.color.green));
         canvas.drawCircle((this.getWidth()/2)+(getWidth()/11)*2,this.getHeight()-this.getHeight()/16, this.getWidth()/13, this.circle);
         // bouton retour
@@ -133,10 +141,10 @@ public class GameView extends View {
         this.invalidate();
     }
 
-    /*public void removeChoix() {
+    public void removePion() {
         this.saisie.removeSelection(this.getResources().getColor(R.color.pionVide));
         this.invalidate();
-    }*/
+    }
 
     public void clearChoix() {
         this.saisie.initSelection(this.getResources().getColor(R.color.pionVide));
diff --git a/app/src/main/java/com/example/mastermind/game/Saisie.java b/app/src/main/java/com/example/mastermind/game/Saisie.java
index 21e29ee..b28f0d3 100644
--- a/app/src/main/java/com/example/mastermind/game/Saisie.java
+++ b/app/src/main/java/com/example/mastermind/game/Saisie.java
@@ -47,12 +47,13 @@ public class Saisie {
 
     }
 
-    /*public void removeSelection(Integer color) {
-        if(this.sizeSelection<=4) {
+    public void removeSelection(Integer pionVide) {
+        if(this.sizeSelection<=4 && this.sizeSelection>0) {
+            this.selection.removeLast();
+            this.selection.add(pionVide);
             this.sizeSelection-=1;
-            this.selection.set(this.sizeSelection, this.choix.get(color));
         }
-    }*/
+    }
 
     public int getSizeSelection(){
         return this.sizeSelection;
diff --git a/app/src/main/java/com/example/mastermind/game/TouchListener.java b/app/src/main/java/com/example/mastermind/game/TouchListener.java
index 0e559c5..03fea90 100644
--- a/app/src/main/java/com/example/mastermind/game/TouchListener.java
+++ b/app/src/main/java/com/example/mastermind/game/TouchListener.java
@@ -41,7 +41,7 @@ public class TouchListener implements View.OnTouchListener{
                     this.view.changeState();
                     i = 0;
                 } else if (v.getWidth()/2-v.getWidth()/13<x && x<v.getWidth()/2+v.getWidth()/13) { // retour
-                    //this.view.removeChoix();
+                    this.view.removePion();
                 } else if (v.getWidth()/2-(v.getWidth()/11)*2-v.getWidth()/13<x && x<v.getWidth()/2-(v.getWidth()/11)*2+v.getWidth()/13) { // annuler
                     this.view.clearChoix();
                 }
diff --git a/app/src/main/res/drawable/back_button.png b/app/src/main/res/drawable/back_button.png
new file mode 100644
index 0000000..bf9beab
Binary files /dev/null and b/app/src/main/res/drawable/back_button.png differ
diff --git a/app/src/main/res/drawable/cancel_button.png b/app/src/main/res/drawable/cancel_button.png
new file mode 100644
index 0000000..f68968e
Binary files /dev/null and b/app/src/main/res/drawable/cancel_button.png differ
diff --git a/app/src/main/res/drawable/valid_button.png b/app/src/main/res/drawable/valid_button.png
new file mode 100644
index 0000000..780db6e
Binary files /dev/null and b/app/src/main/res/drawable/valid_button.png differ