prop_logic_puzzle / example_num_vars5_depth8 /puzzle_0c95b0f200b378b9.txt
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new D β†’ (E β†’ (A β†’ ((D ∨ E β†’ E) β†’ (((E β†’ C) ∨ C) ∧ A β†’ (D β†’ C) ∧ E ∨ B))))
intro
intro
intro
intro
intro
cases 4
cases 4
left
constructor
intro
cases 4
cases 5
apply 12
exact 1
exact 13
exact 1