WFM (2009); WIM (2010); WGM (2012) and IM (2014).
She scored her first IM norm in her 7.5/11 result in the European Individual Championships (Women) (2010), and is the 2010 U16 Girls World Champion. She successfully defended her U16 crown in 2011. Belarusian champion (w) in 2010, 2012 and 2013. She came 2nd in the Moscow Open 2012 E with 6.5/9, lifting her to being the top rated girl U18 in Europe, and subsequently scored a solid 5.5/11 at the European Individual Women's Championship (2012) and placed 3rd in the U20 Open Championship Belarus behind IM Vladislav Kovalev and FM Roman Grib. She contested the World Junior Championship (Girls) (2012), and was =1st with three other players on 9.5/13 but ended up 2nd on tiebreak behind WGM Qi Guo and ahead of IM Anastasia Bodnaruk and WFM Warda Aulia Medina. She competed in the FIDE Knock-out Women's World Championship (2012), but lost her first round match to former Women's World Champion and Chinese GM, Zhu Chen. She fared better in the Belarussian championship in December, scoring 6/9 and finishing =8th, a point from the lead and a 2nd IM norm, in a field of 70. Although she won the 2013 Belarussian Women's Championship, her 6.5/9 in a weak field cost cost her 19 rating points. A few weeks later, she scored only 4/9 in the Moscow Open 2013G (women only section), shedding 13 ratings points and a world ranking in the U18 division. Although she won the Belarus U20 championship (on tiebreak) with 4.5/7, her score lost her a couple of rating points, which she more than recovered with an excellent 6.5/7 result in the 2013 season of the Czech-Slovak League. She boosted her rating considerably with a strong 6.5/11 at the European Individual Women's Championship (2013), narrowly missing her 3rd IM norm. In October 2013, she won the European U18 Girls Championship. In December 2013, she was =1st at the World U18 Girls Championship, but was 2nd on an unfortunate tiebreak which counted the most wins - the problem being that the winner won 1st on the basis of a win on forfeit. She also scored 4.5/8 playing in the annual Snowdrops - Oldhands (2013), winning one and drawing 7 games against her older GM opponents. The result was of IM norm quality but did not qualify as an IM norm due to it being only 8 rounds, 1 round short of the usual minimum prerequisite.
Nevertheless in January 2014, she contested the Belarussian Championship, scoring 6.5/13 (including a win over Sergei Zhigalko), a result that won her the third IM norm she needed to acquire the title. She gained sufficient points in this event to take her over the requisite 2400 rating. She followed up in February with a solid 4.5/9 in the Bronstein Memorial (2014). In August 2014, she played board 1 for the Women's Belarussian team at the Chess Olympiad (Women) (2014) held in Tromsų, scoring 8/10 and narrowly missing a board prize.
As of 1 September 2014, Ziaziulkina's rating was 2429, ranking as #1 female player in Belarus and #4 female Junior (U20) in the world. Her rapid and blitz ratings are 2315 and 2271 respectively.