2001 behind Iozefina Păuleţ. At the national level, Muzychuk won the Ukrainian girls' national youth and junior championships three times, once each at the under-10 level in 2000, the under-12 level in 2002, and the under-20 level in 2004. In-between those last two medals, she was the overall national women's champion in 2003. On the global stage, Muzychuk also medalled in the girls' divisions of the World Youth Championships, earning a bronze medal at the under-10 level in 2000 behind Tan Zhongyi and Harika Dronavalli, as well as two silver medals, one at the under-12 level in 2002 behind Tan and another at the under-14 level in 2004 behind Dronavalli. Muzychuk was awarded the titles of Woman FIDE Master (WFM) in 2001 and Woman International Master (WIM) in 2002. She earned her first FIDE rating of 2197 in July 2001 at age 11. She first participated at the European Individual Women's Championship in 2002 at age 12, and finished with at least an even score in her first three appearances through 2004. Her performance at the 2003 edition as well as a joint first place finish at the 17-round Lviv's Hopes tournament later in the year helped Muzychuk reach a rating of 2300 by October 2003. She also earned a sufficient number of Woman Grandmaster (WGM) norms at these two tournaments, and was formally awarded the WGM title in 2004. At the end of June 2004, Muzychuk switched federations to Slovenia. Her 2004 European Youth gold and World Youth silver medals were among her earliest triumphs with Slovenia. 2005–2010: World Youth and World Junior champion, International Master Following her many titles at the European Youth Championships, Muzychuk finally won a gold medal at the World Youth Championships in 2005 in the under-16 girls' division. She finished in clear first with an unbeaten score of 9/11, drawing with Dronavalli in the last round to clinch the title. She then had a significant rise in rating towards the end of the year to reach a rating of 2400 for January 2006. This rise predominantly resulted from good performances at the Instalplast tournament in Lviv where she had a positive score of 5½/8 against higher-rated opposition and the Slovenian Women's League where she had a dominant score of 8/9. Having already reached a rating of 2400, Muzychuk earned all of her International Master (IM) norms in 2006 and 2007, the first two of