Feliks Zemdegs

Feliks Zemdegs is of Latvian descent, and his maternal grandmother is Lithuanian.^[8] Zemdegs bought his first speedcube in April 2008 after being inspired by speedcubing videos and tutorials on YouTube.^[4] The first unofficial time he recorded was an average of 19.73 seconds on 14 June 2008.^[9]

Zemdegs has a website, CubeSkills, which includes tutorials on solving the Rubik's Cube and other puzzles. There are free algorithm sheets and speedsolving tutorial videos. The site also offers a premium membership which enables access to advanced speedsolving videos.^[10]

Zemdegs attended St Kevin's College, Toorak, and graduated in 2013 with a perfect study score in VCE English and an ATAR of 99.90.^[11][12] Zemdegs has a Bachelor of Commerce from the University of Melbourne, majoring in economics, with a breadth study track in mechanical engineering.^[13] Zemdegs currently works in investment finance.^[14][15] In March 2026, Zemdegs married Jia Ying Kho.

As of March 2026^[update], Zemdegs' YouTube channel has more than 477,000 subscribers.^[16]

In 2020, Zemdegs was one of the primary subjects of the Netflix documentary The Speed Cubers.^[17][18][19]

In 2024, he voiced the character Vegemite on Toast on the animated web series Battle for Dream Island.

Zemdegs won the 3×3×3 event at the first competition he attended, the New Zealand Championships 2009 on 18 July 2009, with an average of 13.74 seconds in the final round. He also won 2×2×2, 4×4×4, 5×5×5, 3×3×3 blindfolded, and 3×3×3 one-handed.^[20] He set 11 Oceanic records at this competition.

At his next competition, the Melbourne Summer Open 2010 on 30 January 2010, Zemdegs set his first world records for 3×3×3 average and 4×4×4 average, with times of 9.21 seconds and 42.01 seconds, respectively.^[21] He held the 3×3×3 average world record continuously from then until 23 April 2017, improving it 8 times, eventually to 6.45 seconds. The most world records he has held at one time is 12 in May 2011.

At the World Championship 2011 in Bangkok, Zemdegs won 2×2×2, 4×4×4, 5×5×5, and 6×6×6. He also took third in 3×3×3 after winning the first three rounds and placed third in 7×7×7.^[22]

At the World Championship 2013 in Las Vegas, Zemdegs won 3×3×3, 4×4×4, and 3×3×3 one-handed.^[23] He also placed second in 5×5×5 and third in 7×7×7.^[24]

At the World Championship 2015 in São Paulo, Zemdegs won 3×3×3, 2×2×2, 4×4×4, and 5×5×5. He also placed second in 6×6×6, 7×7×7, and Megaminx.^[25][26]

At the World Championship 2017 in Paris, Zemdegs won 5×5×5 and 7×7×7. He also took second in 6×6×6, 3×3×3 One-handed, and Megaminx, and placed third in 4×4×4. For the 3x3x3 event, despite being world champion in 2013 and 2015, he came fourth place.^[27]

At the World Championship 2019 in Melbourne, Zemdegs only placed in the top three in one event, getting third in 5x5x5.^[28]

On 5 June 2021, Zemdegs lost his last world record (his 5.53 3x3x3 average) to Chinese speedcuber Ruihang Xu.^[29]

At the World Championship 2023 in Incheon, Zemdegs failed to place top 3 in any event and did not make the semi-finals in the 3x3x3 event, his first time failing to do so since beginning in 2011.^[30]

At the World Championship 2025 in Seattle, Zemdegs advanced to the semi-finals in the main 3x3x3 event but did not qualify for the finals.^[31]

As of May 2026, Zemdegs is currently ranked 45th in the world for 3x3x3 average with a result of 5.53, set in 2019 and 57th in the world for 3x3x3 single, with a result of 4.16, set in 2020.^[32][33]

Zemdegs still holds the record for the most number of 5x5x5 world records by a single competitor at 37.^[6]

World records by Zemdegs.^[34]

Listed below are Zemdegs' personal records achieved in official World Cube Association competitions as of May 2026.^[6]