GANGNEUNG - Russian teenager Alina Zagitova produced a spellbinding, world-record short programme on Wednesday to overshadow Olympic rival and compatriot Evgenia Medvedeva.

The 15-year-old starlet from the Western Urals seduced the judges with her flawless routine to Black Swan, earning 82.92 points to lead the competition. Zagitova shaded double world champion Medvedeva, 18, who just minutes earlier had broken the record she had set last week in the team event with a score of 81.61.

Zagitova's flawless two-and-a-half minutes on the ice at the Gangneung Arena, featuring a triple lutz, triple toeloop combination, gave her a narrow advantage of 1.31 points going into Friday's free dance final. The two skaters are set to fight it out for what could be the first gold of the Games for the Olympic Athletes from Russia -- who are competing as neutrals, after Russia were banned for doping.

Placed third after the short programme is Canadian Kaetlyn Osmond on 78.87, with Japan's Satoko Miyahara in fourth. Zagitova has swept all before her in her first senior season, arriving in South Korea unbeaten in her four competitions, culminating in depriving Medvedeva of her European title in Moscow last month.

Medvedeva holds the world record for the free dance and combined, but the Muscovite knows she will have a herculean fight on her hands to deny Zagitova. Medvedeva was beaten six points by Zagitova at the European Championships, the first time the pair had skated against each other in competition. Medvedeva says she is preparing for "war" to deny her close friend Zagitova gold.

"We are friends, we are young girls, we can talk about anything with each other," said Medvedeva, 18, who like Zagitova is making her Olympic debut. "But on the ice, we must fight, I feel like it's a little war, when you skate you are alone," added the double world champion Zagitova said she is up to the challenge. "I've said many many times, Evgenia and me are very good friends off the ice but in practice or competition I get this feeling of rivalry, it's not bad or negative or malicious feeling of rivalry but it is there." Asked at the post short programme press conference about her maturity and serious nature Zagitova replied: "I am very calm, I don't show emotions, I don't splash them around." Then almost apologetically she added: "This is how I am, it's my nature."

The two skaters are set to fight it out for what could be the first gold of the Games for the Olympic Athletes from Russia -- who are competing as neutrals, after Russia were banned for doping. Medvedeva refused to be drawn on the significance of that, commenting in English: "I'm trying not to think about medals, my main goal is to show a clean free skate, to be satisfied with my performance."

Zagitova's world record feat was all the more remarkable given she had watched Medvedeva a few minutes earlier breaking the record she had set last week in the team event with a score of 81.61. "I was very happy when I saw the score, but I did not expect it," the girl from the Western Urals said. "This is the best performance of my life, but there is still room to grow."

Medvedeva was beaten six points by Zagitova at the European Championships, the first time the pair had skated against each other in competition. But she was also making her comeback in the Russian capital after a two-month hiatus recovering from a broken foot. In her enforced absence Zagitova had stolen the skating spotlight, and on this form she may well do so again as she attempts to become the second youngest ladies Olympic skate champion behind American Tara Lipinski, who won the 1998 gold medal aged 15 years, eight months and 10 days.