diff --git a/code/index.html b/code/index.html
index 0ad5c1e..338c457 100644
--- a/code/index.html
+++ b/code/index.html
@@ -37,6 +37,7 @@
     tab4=[];
     tabTotal=[];
     mousePos=[];
+    colors=["red","blue","green","brown"];
     
     width=300; // 6 lignes de 50px
     height=300; // 6 colonnes de 50px
@@ -116,17 +117,41 @@
     function empiler()
     {
         tabTotal=[];
-        tab4.forEach(element => {
-            tabTotal.push(element);
-        })
-        tab3.forEach(element => {
+        const unique = (val) => val.toString() != test.toString();
+        exists=false;
+
+        tab1.forEach(element => {
             tabTotal.push(element);
         })
         tab2.forEach(element => {
-            tabTotal.push(element);
+            colors.forEach(col => {
+                test=[element[0],element[1],col];
+                if(!exists)
+                    exists=!tabTotal.every(unique);
+            })
+            if(!exists)
+                tabTotal.push(element);
+            exists=false;
         })
-        tab1.forEach(element => {
-            tabTotal.push(element);
+        tab3.forEach(element => {
+            colors.forEach(col => {
+                test=[element[0],element[1],col];
+                if(!exists)
+                    exists=!tabTotal.every(unique);
+            })
+            if(!exists)
+                tabTotal.push(element);
+            exists=false;
+        })
+        tab4.forEach(element => {
+            colors.forEach(col => {
+                test=[element[0],element[1],col];
+                if(!exists)
+                    exists=!tabTotal.every(unique);
+            })
+            if(!exists)
+                tabTotal.push(element);
+            exists=false;
         })
         
         toutDessiner(tabTotal,canvasT,ctxT);