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diff --git a/challenge-252/lubos-kolouch/python/ch-1.py b/challenge-252/lubos-kolouch/python/ch-1.py
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+++ b/challenge-252/lubos-kolouch/python/ch-1.py
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+#!/usr/bin/env python
+
+
+def sum_of_special_squares(ints: list[int]) -> int:
+    """
+    Calculates the sum of squares of all special elements in the array.
+    A special element is defined as one whose 1-based index divides the length of the array.
+
+    :param ints: List of integers
+    :return: Sum of squares of special elements
+    """
+    n = len(ints)
+    return sum(ints[i - 1] ** 2 for i in range(1, n + 1) if n % i == 0)
+
+
+# Tests
+assert sum_of_special_squares([1, 2, 3, 4]) == 21
+assert sum_of_special_squares([2, 7, 1, 19, 18, 3]) == 63