2 files changed, 22 insertions, 5 deletions
diff --git a/prolog/problems/lists/del_3/common.py b/prolog/problems/lists/del_3/common.py
index 5e00f4d..d0e4a29 100644
--- a/prolog/problems/lists/del_3/common.py
+++ b/prolog/problems/lists/del_3/common.py
@@ -24,14 +24,11 @@ test_cases = [
         [{'X': 'g', 'Y': 'u', 'Z': 'f'}]),
 ]
 
-def test(program, solved_problems):
-    code = (program + '\n' +
-            server.problems.solutions_for_problems('prolog', solved_problems))
-
+def test(code, aux_code):
     n_correct = 0
     engine_id = None
     try:
-        engine_id, output = prolog.engine.create(code=code, timeout=1.0)
+        engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0)
         if engine_id is not None and 'error' not in map(itemgetter(0), output):
             # Engine successfully created, and no syntax error in program.
             for query, answers in test_cases:
diff --git a/prolog/problems/lists/del_3/sl.py b/prolog/problems/lists/del_3/sl.py
new file mode 100644
index 0000000..49ab16f
--- /dev/null
+++ b/prolog/problems/lists/del_3/sl.py
@@ -0,0 +1,20 @@
+# coding=utf-8
+
+name = 'del/3'
+slug = 'Zbriši element iz seznama'
+
+description = '''\
+<p><code>del(X, L1, L2)</code>: seznam <code>L2</code> dobimo iz seznama <code>L1</code> tako da zbrišemo element <code>X</code>.</p>
+<pre>
+  ?- del(1, [1,2,3], L).
+    L = [2,3].
+  ?- del(2, [1,2,3,2,5], L).
+    L = [1,3,2,5] ;
+    L = [1,2,3,5].
+  ?- del(X, [1,2,3], L).
+    X = 1, L = [2,3] ;
+    X = 2, L = [1,3] ;
+    X = 3, L = [1,2].
+</pre>'''
+
+hint = {}