diff --git a/2016-python2/output/day_11.py b/2016-python2/output/day_11.py
index 39ae350..249a5f2 100644
--- a/2016-python2/output/day_11.py
+++ b/2016-python2/output/day_11.py
@@ -142,16 +142,6 @@ def M(s, e):
 
 
 if __name__ == "__main__":
-    # use dummy data
-    inp = """
-    The first floor contains a hydrogen-compatible microchip and a lithium-compatible microchip.
-    The second floor contains a hydrogen generator.
-    The third floor contains a lithium generator.
-    The fourth floor contains nothing relevant.
-    """.strip()
-
-    z, _ = solve(inp)
-
     with open("./input/11.txt", "r") as f:
         inp = f.read().strip()
 
@@ -160,6 +150,5 @@ if __name__ == "__main__":
     a = part_1(inp)
     b = part_2(inp)
 
-    assert z == 11
     assert a == 37
     assert b == 61
diff --git a/2016-python2/output/day_16.py b/2016-python2/output/day_16.py
new file mode 100644
index 0000000..3a26bcd
--- /dev/null
+++ b/2016-python2/output/day_16.py
@@ -0,0 +1,43 @@
+from output import answer  # , matrix, D, DD, ADJ, ints, mhd, mdbg, vdbg
+
+n = 16
+title = "Dragon Checksum"
+
+
+@answer(1, "The checksum to the state to fill first disc is {}")
+def part_1(presolved):
+    return presolved[0]
+
+
+@answer(2, "The checksum to the state to fill second disc is {}")
+def part_2(presolved):
+    return presolved[1]
+
+
+def solve(data):
+    p12 = []
+    for DS in [272, 35651584]:
+        s = [int(c) for c in data]
+        while len(s) < DS:
+            b = [abs(int(c) - 1) for c in s[::-1]]
+            s = s + [0] + b
+        s = s[:DS]
+        p = len(s)
+        while p % 2 == 0:
+            s = [int(a == b) for a, b in zip(s[::2], s[1::2])]
+            p = len(s)
+        p12.append("".join(map(str, s)))
+    return p12
+
+
+if __name__ == "__main__":
+    with open("./input/16.txt", "r") as f:
+        inp = f.read().strip()
+
+    inp = solve(inp)
+
+    a = part_1(inp)
+    b = part_2(inp)
+
+    assert a == "10011010010010010"
+    assert b == "10101011110100011"