1 files changed, 13 insertions, 0 deletions
diff --git a/prolog/problems/lists_advanced/sum_2/en.py b/prolog/problems/lists_advanced/sum_2/en.py
new file mode 100644
index 0000000..b4dab45
--- /dev/null
+++ b/prolog/problems/lists_advanced/sum_2/en.py
@@ -0,0 +1,13 @@
+# coding=utf-8
+
+name = 'sum/2'
+slug = 'find the sum of all elements in list'
+
+description = '''\
+<p><code>sum(L, Sum)</code>: <code>Sum</code> is the sum of all elements in the list <code>L</code>.</p>
+<pre>
+?- sum([1,2,3], Sum).
+  Sum = 6.
+</pre>'''
+
+hint = {}