The first round of the Norway Chess tournament in Oslo featured a stunning victory by Alireza Firouzja over Magnus Carlsen, marking Firouzja's first classical win against the reigning champion. The tournament, known for its high level of competition, has shifted from Stavanger to Oslo this year, maintaining its six-player double round-robin format. Firouzja's win was particularly noteworthy as he played with an injured leg, having withdrawn from a prior tournament due to an ankle injury. Carlsen, playing black, sacrificed a pawn early but faltered on move 33, ultimately resigning after Firouzja consolidated his advantage. Other matches included Armageddon deciders, with Gukesh Dommaraju and Praggnanandhaa Rameshbabu both winning their respective tiebreakers after drawn classical games. The tournament's structure emphasizes the value of classical wins, making Firouzja's achievement even more significant. This opening round sets a competitive tone for the remainder of the tournament, with Firouzja leading the standings.