Competitions · Republic of Korea

Osan Summer 2025

경기도 오산시 (Osan-si, Gyeonggi-do) · 29 June 2025 · 5 events · 137 competitors · 87 personal bests

Yoochan Hong (홍유찬) won two of the five events (3×3, 3×3 one-handed) and the closest final was the Clock, won by Lee Seong Vin (이성빈) by 0.26 seconds. 137 competitors produced 87 personal bests, 30 of which still stand today, and 32 people held a competitor card for the first time.

The moment

A national record

Lee Seong Vin (이성빈) set the Clock single national record: 2.66.

Two wins

Yoochan Hong (홍유찬) — 3×3, 3×3 one-handed

0.26s

closest final — Clock, Lee Seong Vin (이성빈) over Yeon Kyun Park (박연균)

personal bests set on the day

Winners & podiums

Event	Winner	Single	Average
3×3	Yoochan Hong (홍유찬)	6.11	7.30
3×3 blindfolded	JiHun Yim (임지훈)	20.18	—
3×3 one-handed	Yoochan Hong (홍유찬)	8.53	10.84
Clock	Lee Seong Vin (이성빈)	2.66	3.72
Skewb	Yeon Kyun Park (박연균)	1.52	2.09

The PB harvest

87 set · 30 still standing

Hyunmin Roh (노현민) — 3×3 single 5.06: into the top 0.13% of the event's history.
Youyong Kim (김유용) — 3×3 single 5.63: into the top 0.3% of the event's history.
Yeon Kyun Park (박연균) — 3×3 single 5.73: into the top 0.35% of the event's history.
Byeong-Wook Jeong — 3×3 single 8.71: into the top 4.2% of the event's history.
Dayu Hyun (현다유) — Clock single 6.12: into the top 7.6% of the event's history.
Jongwon Kook (국종원) — 3×3 one-handed single 14.83: into the top 7.8% of the event's history.
An JiWan (안지완) — 3×3 blindfolded single 49.90: into the top 9.9% of the event's history.
Seobin Lee (이서빈) — 3×3 single 11.04: into the top 10.6% of the event's history.

First-timers

32 people competed for the first time at this competition, joining the 28,483 people who made their debut in 2025. Start here explains what a first competition is like.

Records watch

1 regional record was set at this competition.

The field

137 competitors · 496 results · 5 events.

Solve this final yourself

how this works →

The 3×3 final here ran on one scramble group, so these five sequences are exactly what the finalists faced. Yoochan Hong (홍유찬) won it with a 7.30 average. Hold your cube white centre up, green centre facing you, follow each sequence, and check against the pictures.

1L U D R L' U F' D2 F' R L2 F2 R2 B R2 F U2 R2
2D' B2 U R U L' D2 L2 B2 U F' U' F2 L2 B2 U B2 U2
3F D2 R' B' L2 D2 R2 B2 D2 L' F2 R B2 U' L' D B' U R U2
4R D' R U R U2 F U D' L2 B' R2 L2 F' D2 B L' U2
5L2 D2 B' D' F' L U' L' B2 L' B' U D' R2 B2 R2 U F2

solve 1

solve 2

solve 3

solve 4

solve 5

Race this final

Everyone who competed

137 competitors

Reading this page: a single is one solve's time · an average is the middle three of five solves, best and worst discarded · a PB is a personal best · a final is a competition's last round; its order decides the podium · a DNF (did not finish) is an attempt with no valid result: a popped piece, an unsolved face, an over-limit memorisation · every solve starts from a computer-generated scramble, the same for every competitor in a round.