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diff --git a/challenge-246/luca-ferrari/python/ch-2.py b/challenge-246/luca-ferrari/python/ch-2.py
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+#!python
+
+#
+# Perl Weekly Challenge 246
+# Task 2
+#
+# See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-246/>
+#
+
+import sys
+from itertools import count
+
+# task implementation
+def main( argv ):
+    nums = list( map( int, argv ) )
+    ko = len( nums ) - 2
+
+    for current_index in range( 2, len( nums ) ):
+        for p in count( start = 1 ):
+            for q in count( start = 1 ):
+                if nums[ current_index ] == ( p * nums[ current_index - 2 ] + q * nums[ current_index - 1 ] ) \
+                  or nums[ current_index ] == ( p * -1 * nums[ current_index - 2 ] + q * nums[ current_index - 1 ] ) \
+                  or nums[ current_index ] == ( p * -1 * nums[ current_index - 2 ] + q * -1 * nums[ current_index - 1 ] ) \
+                  or nums[ current_index ] == ( p * nums[ current_index - 2 ] + q * -1 *  nums[ current_index - 1 ] ):
+                    ok = True
+                    ko = ko - 1
+                    break
+
+            if ok:
+                break
+
+    if ko == 0:
+        print( 'True' )
+    else:
+        print( 'False' )
+
+
+
+# invoke the main without the command itself
+if __name__ == '__main__':
+    main( sys.argv[ 1: ] )
+
+