diff --git a/src/carte.py b/src/carte.py
index b04edc8..0ae8ff3 100644
--- a/src/carte.py
+++ b/src/carte.py
@@ -1,5 +1,93 @@
 #!/usr/bin/env python3
+from enum import IntEnum
 
-"""
-Les cartes sont sur 28×31
-"""
\ No newline at end of file
+class Tile(IntEnum):
+    GRD = 0 # ground
+    WAL = 1 # wall
+    SPD = 2 # small pac-dot
+    BPD = 3 # big pac-dot
+    GSD = 4 # ghost door
+    TPT = 5 # teleporter tile
+    FIT = 6 # fully inaccessible tile
+
+class Map:
+    """
+    Pacman maps size is 28×31
+    """
+
+    width = 28
+    height = 31
+
+    def __init__(self, list_ = []):
+        """
+        list_ is the array containing elements:
+        0: ground tile
+        1: wall
+        2: small pac-dot
+        3: big pac-dot
+        4: ghost door
+        5: teleporter (no need to precise which to go because we assume it will
+           be at the opposite map tile)
+        6: fully inaccessible tile (basically tiles that represent the "in-wall"
+           space)
+        """
+        self.map = list_ # in the first part we assume list_ is correct and no need to verify
+
+
+    def verify(self, list_) -> boolean:
+        """
+        This method will verify if a given map is valid or not
+        Return True if correct else False
+
+        we will assume
+        there are only:
+        - 1 ghost door
+        - 4 big pac-dots
+        - 240 pac-dots
+
+        Each ground tile must have at least 2 ground tile neighboors because
+        there is no dead-end tile in pac-man
+        """
+
+        # 1 ghost door verification
+        if sum(sub_arr.count(Tile.GSD) for sub_arr in list_) != 1:
+            return False
+
+        # 4 big pac dots
+        if sum(sub_arr.count(Tile.BPD) for sub_arr in list_) != 4:
+            return False
+
+        # 240 small pac-dots
+        if sum(sub_arr.count(Tile.SPD) for sub_arr in list_) != 240:
+            return False
+
+        # odd number of teleporter tiles
+        teleporter_count = sum(sub_arr.count(Tile.TPT) for sub_arr in list_)
+        if teleporter_count % 2:
+            return False
+
+        edges = list_[0][1:] + list_[height-1][1:] + [sub[0] for sub in list_] + [sub[width-1] for sub in list_][1:-1]
+
+        # must verify teleporters are on edges
+        teleporter_count -= edges.count(Tile.TPT)
+        if teleporter_count: # not all teleporters are on edges
+            return False 
+
+        # no ground tile on border
+        if any(Tile.GRD in edges):
+            return False
+
+        # now we have to verify there is no dead-end ground tile
+        for col in range(1, width-1):
+            for row in range(1, height-1):
+                cpt = 0
+                for x, y in ((0, 1), (1, 0), (-1, 0), (0, -1)):
+                    if list[row+y][col+x] in (Tile.GRD, Tile.TPT, Tile.BPD, Tile.SPD):
+                        cpt += 1
+                        if cpt == 2:
+                            break
+                if cpt < 2:
+                    return False
+        # we have to verify if there is only 1 connexity component of (Tile.GRD, Tile.TPT, Tile.BPD, Tile.SPD)
+        
+        return True
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