diff --git a/Week03/pyramid_besir_secilmis.py b/Week03/pyramid_besir_secilmis.py
new file mode 100644
index 00000000..832a02a8
--- /dev/null
+++ b/Week03/pyramid_besir_secilmis.py
@@ -0,0 +1,10 @@
+def calculate_pyramid_height(number_of_blocks):
+    height = 0
+    n = 0
+    while True:
+        blocks_needed = (n * (n + 1)) // 2
+        if blocks_needed > number_of_blocks:
+            break
+        height = n
+        n += 1
+    return height