diff --git a/problems/016_problem/016_problem.ipynb b/problems/complete/016_problem/016_problem.ipynb
similarity index 100%
rename from problems/016_problem/016_problem.ipynb
rename to problems/complete/016_problem/016_problem.ipynb
diff --git a/problems/015_problem/015_problem.ipynb b/problems/incomplete/015_problem/015_problem.ipynb
similarity index 100%
rename from problems/015_problem/015_problem.ipynb
rename to problems/incomplete/015_problem/015_problem.ipynb
diff --git a/problems/015_problem/015_problem.py b/problems/incomplete/015_problem/015_problem.py
similarity index 100%
rename from problems/015_problem/015_problem.py
rename to problems/incomplete/015_problem/015_problem.py