The King’s Indian is an opening, where Black deliberately allows White control of the center with his pawns, with the view to subsequently challenging it with the moves …e5 or …c5. Until the mid-1930s, it was generally regarded as highly suspect, but the analysis and play of three strong Ukrainian players in particular—Alexander Konstantinopolsky, Isaac Boleslavsky, and David Bronstein—helped to make the defense much more respected and popular. It is a dynamic opening, exceptionally complex.