One wrong exchange and game is over | Ponkratov - Mamedyarov | Endgame rapid

Shakhriyar has played line of Caro-Kann which I wouldn't consider myself playing, playing with light square bishop to d7 and blocking with pawns. It could be an example of lost just because Black was out of space completely, but Ponkratov just broke a rule "never trade"and lost quickly. https://lichess.org/study/e3RORLjr