prop_logic_puzzle / example_num_vars5_depth7 /puzzle_4344fc263f167c3b.txt
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new C ∨ B β†’ (A ∧ B β†’ ((D ∨ A β†’ B) β†’ (((B β†’ C) β†’ C) β†’ (E ∧ B β†’ A ∧ ((C β†’ D) β†’ E ∨ D)))))
intro
intro
cases 1
intro
intro
intro
cases 6
cases 1
cases 6
constructor
exact 2
intro
cases 1
cases 6
left
exact 7