Magnus Carlsen climbed to the top of the standings in the Norway Chess Tournament by beating former co-leader Fabiano Caruana with white in their classical encounter. Meanwhile, Alireza Firouzja and Aryan Tari won in Armageddon, defeating Levon Aronian and Jan-Krzysztof Duda respectively. A misunderstanding with the arbiter meant Firouzja arrived a couple of minutes late to his sudden-death game. [Read the full report on Round 4.]