diff --git a/2025/day03.ua b/2025/day03.ua
new file mode 100644
index 0000000..a5989eb
--- /dev/null
+++ b/2025/day03.ua
@@ -0,0 +1,16 @@
+~ "aoc.ua" ~ Lines
+
+Input ← Lines &fras "input/day03.txt"
+Banks ← ⍚(≡⋕) Input
+
+BestJoltage ← (
+  ˙⊞˜⊂ °⊏
+  ↯ ∞_2
+  ▽⊸≡(>°⊟)
+  ⊏
+  ≡⇌
+  ⌝⊥10
+  /↥
+)
+
+/+ ≡(BestJoltage°□) Banks