prop_logic_puzzle / example_num_vars5_depth7 /puzzle_209e70ec1bc92305.txt
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new ((B β†’ E) β†’ D) β†’ ((D β†’ E) β†’ ((A β†’ E) β†’ (C ∨ E β†’ C ∨ ((C ∨ D) ∨ ((C ∨ A) ∨ (C ∨ A))))))
intro
intro
intro
intro
right
left
cases 3
left
exact 4
right
apply 0
intro
exact 5