Competitions · Republic of Korea

Hamchang Open 2023

경상북도 상주시 (Sangju-si, Gyeongsangbuk-do) · 18 November 2023 · 6 events · 149 competitors · 107 personal bests

Seung Hyuk Nahm (남승혁) won four of the six events (3×3, 4×4, 6×6) and the closest final was the 3×3, won by Seung Hyuk Nahm (남승혁) by 0.36 seconds. 149 competitors produced 107 personal bests, 18 of which still stand today, and 63 people held a competitor card for the first time.

The moment

The day's biggest improvement

Son Jeong-Sang took a Pyraminx single of 22.77 down to 10.37, 54 percent better in one day.

Four wins

Seung Hyuk Nahm (남승혁) — 3×3, 4×4, 6×6, 7×7

0.36s

closest final — 3×3, Seung Hyuk Nahm (남승혁) over DongSoo Park (박동수)

107

personal bests set on the day

Winners & podiums

Event	Winner	Single	Average
3×3	Seung Hyuk Nahm (남승혁)	5.49	6.47
4×4	Seung Hyuk Nahm (남승혁)	20.94	23.99
6×6	Seung Hyuk Nahm (남승혁)	1:16.08	1:18.66
7×7	Seung Hyuk Nahm (남승혁)	1:49.55	1:54.36
Pyraminx	Seung-Ho Song (송승호)	1.50	3.09
Square-1	Park Ji Won (박지원)	7.25	7.73

The PB harvest

107 set · 18 still standing

SeungO Han (한승오) — Pyraminx single 2.07: into the top 1.3% of the event's history.
Doyul Kim (김도율) — 7×7 single 2:11.50: into the top 1.4% of the event's history.
Chun Seung Jae (천승재) — Pyraminx single 2.49: into the top 2.2% of the event's history.
Jaemin Chang (장재민) — 7×7 single 2:23.08: into the top 2.7% of the event's history.
Moon Soo Ho (문수호) — 3×3 single 8.79: into the top 4.4% of the event's history.
Taewoo Ha (하태우) — 6×6 single 1:46.33: into the top 5.9% of the event's history.
SeongYong Yoo (유성용) — 3×3 single 9.48: into the top 6.1% of the event's history.
Taewoo Ha (하태우) — 7×7 single 2:53.12: into the top 8.7% of the event's history.

First-timers

63 people competed for the first time at this competition, joining the 37,591 people who made their debut in 2023. Start here explains what a first competition is like.

Records watch

No national, continental or world records were set at this competition. That is true of most competitions.

The field

149 competitors · 476 results · 6 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. Seung Hyuk Nahm (남승혁) won it with a 6.47 average. Hold your cube white centre up, green centre facing you, follow each sequence, and check against the pictures.

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

solve 1

solve 2

solve 3

solve 4

solve 5

Race this final

Everyone who competed

149 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.