This week Merijn van Delft takes a look at a game between Magnus Carlsen and Alexander Grischuk in which the World Champion sacrificed a piece in the opening to build up a slow and powerful attack. | Merijn's show is available on-demand with a ChessBase Premium Account. You can <a href="https://account.chessbase.com/en/create-account" target="_blank">register a Premium account here</a>.