prop_logic_puzzle / example_num_vars6_depth6 /puzzle_25dd2fbd891a7d22.txt
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new E ∨ D β†’ (((E β†’ A) β†’ B) β†’ (A β†’ (((F β†’ B) β†’ F) β†’ ((E β†’ A) β†’ ((B β†’ E ∧ C) β†’ F)))))
intro
intro
intro
intro
intro
intro
apply 3
intro
apply 1
exact 4