prop_logic_puzzle / example_num_vars5_depth8 /puzzle_5d907fc562ac80bb.txt
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new ((E β†’ C) β†’ B) β†’ (A ∧ B β†’ ((C β†’ D ∧ C) β†’ ((E ∨ C β†’ E) β†’ (((B β†’ D) β†’ B) β†’ A))))
intro
intro
cases 1
intro
intro
intro
cases 1
exact 2