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(*         *   The Coq Proof Assistant / The Coq Development Team       *)
(*  v      *         Copyright INRIA, CNRS and contributors             *)
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(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
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(* (c) Copyright 2006-2016 Microsoft Corporation and Inria.                  *)

Require Import ssreflect.


Lemma test1 : Prop -> Prop -> Prop -> Prop -> Prop -> True = False -> Prop -> True \/ True.
by move=> A /= /= /= B C {A} {B} ? _ {C} {1}-> *; right.
Qed.
