Feliks Zemdegs

Feliks Aleksanders Zemdegs (, ; born 20 December 1995) is an Australian Rubik's Cube solver. A speedsolver, he is one of two people to have won the 3x3 cube event at the World Cube Association World Championship twice, the other being Max Park. Zemdegs won in 2013 and 2015, and is often considered the greatest speedcuber of all time. He has set more than 350 records across various speedcubing events: 121 world records, 228 continental records, and 7 national records.

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

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.

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. Zemdegs has a Bachelor of Commerce from the University of Melbourne, majoring in economics, with a breadth study track in mechanical engineering. Zemdegs currently works in investment finance. In March 2026, Zemdegs married Jia Ying Kho.

, Zemdegs' YouTube channel has more than 477,000 subscribers.

In 2020, Zemdegs was one of the primary subjects of the Netflix documentary The Speed Cubers.

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

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

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.

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.

Event Type First world record Latest world record Total 3×3×3 Single 7.03s Melbourne Cube Day 2010 13 November 4.22s Cube For Cambodia 2018 6 May 10 Average 9.21s Melbourne Summer Open 2010 30 January 5.53s Odd Day in Sydney 2019 10 November 132×2×2 Average 2.35s Asian Championship 2010 9–10 October 2.12s Melbourne Cube Day 2010 13 November 2 4×4×4 Single 35.55s New Zealand Champs 2010 10 July 19.36s LatAm Tour – Arequipa 2017 22 June 12 Average 42.01s Melbourne Summer Open 2010 30 January 25.97s Adelaide Summer 2017 21 January 7 5×5×5 Single 1:02.93 Australian Nationals 2010 4–5 September 37.93s Canberra Autumn 2018 21–22 April 16 Average 1:07.59 Australian Nationals 2010 4–5 September 43.21s Melbourne Cube Days 2017 18–19 November 21 6×6×6 Single 2:05.88 Melbourne Summer 2011 29–30 January 1:20.03 World Championship 2017 13–16 July 6 Average 2:15.64 Melbourne Summer 2011 29–30 January 1:27.79 World Championship 2017 13–16 July 8 7×7×7 Single 2:23.55 World Championship 2015 17–19 July 2:06.73 World Championship 2017 13–16 July 5 Average 2:52.09 Australian Nationals 2013 7–8 September 2:14.04 China's 10th Anniversary 2017 1–2 October 11 3×3×3 One-handed Single 11.16s Kubaroo Open 2011 7 May 6.88s Canberra Autumn 2015 9–10 May 4 Average 14.76s Australian Nationals 2010 4–5 September 10.21s Malaysia Cube Open 2017 14–15 October 5 4×4×4 Blindfolded Single 3:37.80 Melbourne Summer 2011 29–30 January 3:37.80 Melbourne Summer 2011 29–30 January 1

Official personal records Listed below are Zemdegs' personal records achieved in official World Cube Association competitions as of May 2026.