Theory of corresponding squares

Endgame theory consists of various concepts. Unlike the opening, the theory in the endgame is not getting influenced by the computer. Knowing certain concepts will always help to understand various endgame theories. Correspondence squares is one of those must-know concepts. Is it only limited to pawn endgame? GM Sundararajan Kidambi explores a concept which he found quite complex since his childhood. | Photo: Shahid Ahmed