diff --git a/python-temel/aggregation.3.py b/python-temel/aggregation.3.py
new file mode 100644
index 0000000..9770bcb
--- /dev/null
+++ b/python-temel/aggregation.3.py
@@ -0,0 +1,25 @@
+class Figure:
+    def __init__(self, ftype, color):
+        self.ftype = ftype
+        self.color = color
+
+class Square:
+    def __init__(self, color):
+        self.color = color
+        self.figure = None
+
+    def set_figure(self, figure):
+        self.figure = figure
+
+    def get_figure(self):
+        return self.figure
+
+class Board:
+    def __init__(self):
+        self.squares = [[Square('Beyaz' if (i + k) % 2 == 0 else 'Siyah' ) for i in range(8)] for k in range(8)]
+        self.squares[0][0].figure = Figure('Kale', 'Siyah')
+        self.squares[0][1].figure = Figure('At', 'Siyah')
+        # ....
+
+board = Board()
+#print(board)
diff --git a/python-temel/aggregation.3.py~ b/python-temel/aggregation.3.py~
new file mode 100644
index 0000000..b2f4522
--- /dev/null
+++ b/python-temel/aggregation.3.py~
@@ -0,0 +1,24 @@
+class Figure:
+    def __init__(self, ftype, color):
+        self.ftype = ftype
+        self.color = color
+
+class Square:
+    def __init__(self, color):
+        self.color = color
+        self.figure = None
+
+    def set_figure(self, figure):
+        self.figure = figure
+
+    def get_figure(self):
+        return self.figure
+
+class Board:
+    def __init__(self):
+        self.squares = [[Square('Beyaz' if (i + k) % 2 == 0 else 'Siyah' ) for i in range(8)] for k in range(8)]
+        self.squares[0][0].figure = Figure('Kale', 'Siyah')
+        self.squares[0][1].figure = Figure('At', 'Siyah')
+        # ....
+
+board = Board()