diff --git a/2025/uiua/day_04.ua b/2025/uiua/day_04.ua
new file mode 100644
index 0000000..e3a2147
--- /dev/null
+++ b/2025/uiua/day_04.ua
@@ -0,0 +1,19 @@
+Input ← (
+ $
+ =@@ ⊜∘ ⊸≠@\n
+)
+
+A ← (
+ ↯∞_3_3⬚0⧈∘[3_3 1_1 1_1]
+ ↯⊟∞√⊸⧻× ≡(<₅/+♭) ⟜≡(⊡1_1)
+)
+
+# part one
+# /+♭ A Input
+
+# part two
+Input
+# =@@ ⊜∘ ⊸≠@\n &fras "day_04.txt"
+⍥(⊸׬⊸A)∞
+˜- ∩(/+♭) ⊃⊢⊣
+# ⊃(⇌≡▽₂4)(˜- ∩(/+♭) ⊃⊢⊣)