diff --git a/day11.ua b/day11.ua
new file mode 100644
index 0000000..bad85ec
--- /dev/null
+++ b/day11.ua
@@ -0,0 +1,33 @@
+$ ...#......
+$ .......#..
+$ #.........
+$ ..........
+$ ......#...
+$ .#........
+$ .........#
+$ ..........
+$ .......#..
+$ #...#.....
+TestInput ←
+
+Parse ← ⊜∘≠@\n.
+
+PartI ← +∩(
+  +⊃(
+    ÷2/+♭⌵⊞-.
+  | /+×⊃∘-≡(/+<)⊃(⍜°⊚(=0)|¤|⧻)
+  )⊏⍏.
+)≡°⊟⊚=@#
+
+PartII ← +∩(
+  +⊃(
+    ÷2/+♭⌵⊞-.
+  | ×999999 /+×⊃∘-≡(/+<)⊃(⍜°⊚(=0)|¤|⧻)
+  )⊏⍏.
+)≡°⊟⊚=@#
+
+PartI Parse TestInput
+PartII Parse TestInput
+
+PartI Parse &fras "day11.in"
+PartII Parse &fras "day11.in"