Error: The type or namespace name 'Logic' does not exist in the namespace 'Game.Logic.AI.Game'

Question

Error 12 The type or namespace name 'Logic' does not exist in the namespace 'Game.Logic.AI.Game' (are you Missing an Assembly Reference?)

How can I solve it? I already have a project called Game.Logic and my code is like this:

  namespace Game.Logic.AI.Game
{
    using Game.Logic.AI;

    public class GControl0 : APVEGameControl
    {
        public static readonly GControl0 Simple = new GControl0();
    }
}