prop_logic_puzzle / example_num_vars7_depth8 /puzzle_496530b053e09ed5.txt
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new (B ∨ A β†’ D) β†’ (A β†’ ((A β†’ C) β†’ (B ∨ F β†’ (C ∧ E β†’ ((E β†’ B) β†’ (C β†’ B) ∧ A)))))
intro
intro
intro
intro
intro
cases 4
intro
cases 4
constructor
intro
cases 4
apply 7
exact 6
exact 1