Cornwall’s Kneehigh troupe revisits ‘Tristan’ with antic comedy and double take on Yseult

Review: Imagine that consummate romantic legend of heroic Tristan and beautiful Isolde, thrust together into illicit love by circumstance and a potion, as a tragi-comedy. No? Can’t conceive of that? Then you have yet to see the visiting Kneehigh theater company’s outlandish “Tristan & Yseult,” which now bounces about the boards at Chicago Shakespeare Theater. ★★★