The action only gets more exciting, and there are many more rounds to come! After 4 Rounds, and many exhausting hours of play, the world champion and the contender - GM Magnus Carlsen and GM Sergey Karjakin end up in a tied score 2-2. 

The Term "ZugZwang"comes from the German dictionary which translates to the meaning - "Compulsion to move". In Chess, this would be an instance where it's your turn to move a piece, but regardless of where you move, you will be at a disadvantage