1  &fras ⊣ &args
2  
3  Mismatches ← /+♭≠ ∩↙⟜: ↧∩⧻,, ⊙⇌ ⊃↘↙
4  Solve!     ← +×100: ∩(/+×=^0: ⊙≡Mismatches. ⍜(-1)⇡⊃⧻¤) ⍉.
5  
6  ⊜(□⊜∘≠@\n.)¬⌕"\n\n".
7  ∩/+ ≡◇⊃Solve!1 Solve!0