diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index c0eb312..dca908b 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,13 +13,26 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "Algo/Séminaire/Chapitre 6 - Lists.md",
+                "file": "Algo/Courses/Chapter 6 - Lists (Exercises).md",
+                "mode": "source",
+                "source": false
+              }
+            }
+          },
+          {
+            "id": "accf3e9b23e83334",
+            "type": "leaf",
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "Algo/Courses/Chapter 6 - Lists (Exercises).md",
                 "mode": "source",
                 "source": false
               }
             }
           }
-        ]
+        ],
+        "currentTab": 1
       }
     ],
     "direction": "vertical"
@@ -85,7 +98,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "Algo/Séminaire/Chapitre 6 - Lists.md",
+                "file": "Algo/Courses/Chapter 6 - Lists (Exercises).md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +115,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "Algo/Séminaire/Chapitre 6 - Lists.md",
+                "file": "Algo/Courses/Chapter 6 - Lists (Exercises).md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +138,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "Algo/Séminaire/Chapitre 6 - Lists.md"
+                "file": "Algo/Courses/Chapter 6 - Lists (Exercises).md"
               }
             }
           },
@@ -156,10 +169,12 @@
       "command-palette:Open command palette": false
     }
   },
-  "active": "88e153f7ea61ad97",
+  "active": "accf3e9b23e83334",
   "lastOpenFiles": [
+    "Algo/Courses/Chapter 6 - Lists.md",
+    "Algo/Courses/Chapter 6 - Lists (Exercises).md",
+    "Algo/Courses",
     "Algo/Séminaire/Exercices seminaire.md",
-    "Algo/Séminaire/Chapitre 6 - Lists.md",
     "Algo/CM/CM du 27 septembre.md",
     "Algo/Séminaire/Chapter 5 - Recursivity.md",
     "COM-ADMR/Séjour international EPITA.md",
@@ -197,7 +212,6 @@
     "Algo/Séminaire/Weird stuff.md",
     "Algo/Séminaire/assets/69E2987C-209A-48CD-8964-5A60462966E5.jpg",
     "Algo/Séminaire/assets",
-    "Algo/Séminaire",
     "Untitled.canvas",
     "2023-09-01.md",
     "Cours algo.md",
diff --git a/Algo/Courses/Chapter 6 - Lists (Exercises).md b/Algo/Courses/Chapter 6 - Lists (Exercises).md
new file mode 100644
index 0000000..95b58e3
--- /dev/null
+++ b/Algo/Courses/Chapter 6 - Lists (Exercises).md	
@@ -0,0 +1,8 @@
+## 1.1
+```Ocaml
+let product n =
+	if n = [] then
+		0
+	else 
+		let rec p = 
+			
\ No newline at end of file
diff --git a/Algo/Séminaire/Chapitre 6 - Lists.md b/Algo/Courses/Chapter 6 - Lists.md
similarity index 94%
rename from Algo/Séminaire/Chapitre 6 - Lists.md
rename to Algo/Courses/Chapter 6 - Lists.md
index cf3c9de..07e138a 100644
--- a/Algo/Séminaire/Chapitre 6 - Lists.md	
+++ b/Algo/Courses/Chapter 6 - Lists.md	
@@ -108,3 +108,12 @@ val t: int list = [2; 3]
 			1 +. length t;;
 Warning : pattern matching not exhaustive
 val length: 'a list -> int = <fun>
+
+# let rec length = function
+	| [] -> 0
+	| _::t -> 1 + length t;;
+(* with this solution there is no warning *)
+val length : 'a list -> int = <fun>
+```
+
+