Fabiano Caruana beat defending open tournament champion Jan-Krzysztof today in round five ©FIDE

All but one spot in the International Chess Federation (FIDE) World Cup open tournament quarter-finals has been decided after round five action in Azerbaijan.

Norwegian grandmaster Magnus Carlsen eliminated Ukraine's Vasyl Ivanchuk with a second victory today following yesterday's win.

The pair were neck-and-neck for the majority of the decisive fixture before entering an even bishop endgame at the Baku Marriott Hotel Boulevard.

Ivanchuk misplayed it and quickly realised when his pawn was taken, leading him to resignation two moves later.

A new winner is guaranteed in the open tournament after defending champion Jan-Krzysztof Duda of Poland crashed out.

After a draw in his first game of the round, he lost as white to the United States' Fabiano Caruana.

Ian Nepomniachtchi, competing as neutral, enters his third tiebreak of the World Cup as he drew again today against Vidit Santosh Gujrathi of India.

Azerbaijan's Nijat Abasov has progressed with wins over Emirati player Saleh Salem in both of their matches.

Indian teenager Rameshbabu Praggnanandhaa also advanced after a late win against Hungary's Ferenc Berkes.

Praggnanandhaa dominated the flanks which allowed to execute a combination on move 25 that led to the win.

In the women's tournament, there is still nothing to separate Germany's Elisabeth Pähtz and Anna Muzychuk of Slovenia as they drew again.

Muzychuk had a chance to win but failed to capitalise on her opponent's mistake, letting the advantage slip within two moves.

Neutral athlete Polina Shuvalova made a brilliant comeback against Bulgaria's Nurgyul Salimova in a match that saw a huge momentum shift.

Salimova was clearly leading at one point but her opponent came out victorious after securing two passers for a knight served as the turning point.