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+"""Perl weekly challenge 187 - Task #2: Magical Triplets.
+
+You are given a list of positive numbers, @n, having at least 3 numbers.
+Write a script to find the triplets (a, b, c) from the given list that
+satisfies the following rules
+i.e. 'a + b > c', 'b + c > a', 'a + c > b' and 'a + b + c' is maximum.
+In case, you end up with more than one triplets having the maximum then
+pick the triplet where 'a >= b >= c'.
+
+https://theweeklychallenge.org/blog/perl-weekly-challenge-187/#TASK2
+"""
+import unittest
+from typing import Iterable
+
+
+def magical_triplets(numbers: Iterable[int]) -> Iterable | None:
+    """Return most magical triplet from given numbers.
+
+    :param numbers: numbers to make triplets (at least 3)
+    :return: most magical triplet (or empty)
+    """
+    if len(numbers) < 3:
+        raise ValueError("Input list should be at least 3 numbers.")
+
+    triplet = (0,)
+    for i, a in enumerate(numbers):
+        for j, b in enumerate(numbers):
+            if j == i:
+                continue
+            for k, c in enumerate(numbers):
+                if k == i or k == j:
+                    continue
+                if a + b > c and b + c > a and a + c > b \
+                        and sum((a, b, c)) >= sum(triplet):
+                    if sum((a, b, c)) == sum(triplet) and not a >= b >= c:
+                        continue
+                    triplet = (a, b, c)
+
+    return triplet if len(triplet) == 3 else None
+
+
+class TestMagicalTriplets(unittest.TestCase):
+
+    def test_magical_triplets(self):
+        cases = (
+            ((1, 2, 3, 2), (3, 2, 2)),
+            ((1, 3, 2), None),
+            ((1, 1, 2, 3), None),
+            ((2, 4, 3), (4, 3, 2)),
+        )
+        for case in cases:
+            self.assertEqual(magical_triplets(case[0]), case[1], f"Input: {case[0]}")
+
+
+if __name__ == '__main__':
+    unittest.main()