unmasterable

The appeal, I suppose, is that, in a world so unmasterable and so unknowable, you give the illusion or veneer of the rational, of order—these strong men, these powerful purveyors of truth.

Chess is a game that is beyond the scope of the human mind—unmastered and, probably, unmasterable.

Martin Amis thought chess was an unmasterable game, but the machines are proving him wrong.

But how was it within the vail of the heart and teeming mind, where the currents and counter-currents of that subtle but powerful passion flow and clash unseen, often gaining their full height and unmasterable strength before any event shall occur to betray their existence to the public.