Round 4 of Norway Chess 2026 produced another dramatic day of elite competition in Oslo, with Magnus Carlsen claiming a crucial victory over reigning world champion Gukesh Dommaraju in the marquee matchup of the day.

Playing with the black pieces, Carlsen navigated a tense, strategically rich encounter before gradually taking control in the middlegame. Although the position remained balanced for long stretches, mounting pressure and severe time trouble eventually pushed Gukesh into inaccuracies that allowed the Norwegian star to convert his advantage into a full classical win.

The victory marks an important turnaround for Carlsen after a difficult opening phase of the tournament and significantly improves his standing before the home crowd.

Tournament leader Alireza Firouzja was held to a classical draw by Wesley So following a cautious positional battle in which neither player managed to create decisive winning chances. Wesley So later secured victory in the Armageddon tiebreak, earning the additional points.

In another closely fought encounter, Vincent Keymer and Praggnanandhaa Rameshbabu shared the points after a balanced contest featuring opportunities for both players. Praggnanandhaa later triumphed in Armageddon to collect the bonus points.

Despite the Armageddon loss, Firouzja remains at the top of the standings after four rounds, while Carlsen’s classical victory has reignited his challenge near the top of the leaderboard.

The women’s section of the tournament also delivered another intense round, with all three classical games ending in draws before being decided in Armageddon playoffs.

Humpy Koneru and Zhu Jiner fought a tense encounter that remained level throughout, before Zhu Jiner emerged victorious in the Armageddon decider.

Defending women’s world champion Ju Wenjun managed to hold a difficult position against tournament leader Bibisara Assaubayeva in classical play. Assaubayeva later won the Armageddon game to strengthen her lead in the standings.

Meanwhile, Divya Deshmukh pushed strongly for victory against Anna Muzychuk during a complex middlegame battle, but Muzychuk defended resiliently before going on to win the Armageddon tiebreak.

After four rounds, Assaubayeva continues to lead Norway Chess Women, with Muzychuk, Divya and Zhu Jiner remaining firmly in contention as the tournament heads deeper into its decisive stages.