Competitions · United States

The Battle of Lexington Semiquincentennial 2025

Lexington, Massachusetts · 26 April 2025 · 13 events · 95 competitors · 110 personal bests

Curtis Chai won four of the 13 events (3×3, 2×2, 4×4) and the closest final was the Pyraminx, won by Elijah Rain Phelps by 0.14 seconds. 95 competitors produced 110 personal bests, 41 of which still stand today, and twelve people held a competitor card for the first time.

The moment

A national record

Ivan Kamonye Mbui set the 4×4 single national record: 42.06.

Four wins

Curtis Chai — 3×3, 2×2, 4×4, Clock

0.14s

closest final — Pyraminx, Elijah Rain Phelps over Parker Trager

110

personal bests set on the day

Winners & podiums

Event	Winner	Single	Average
3×3	Curtis Chai	5.85	7.10
2×2	Curtis Chai	1.27	1.61
4×4	Curtis Chai	24.47	28.45
5×5	Elijah Rain Phelps	55.28	1:01.79
6×6	Parker Trager	1:42.02	1:53.09
7×7	Parker Trager	2:56.53	3:01.77
3×3 blindfolded	Will Russo	48.57	—
3×3 one-handed	Parker Trager	11.25	11.82
Clock	Curtis Chai	3.69	4.76
Megaminx	Daniyal Suleimen	42.04	42.84
Pyraminx	Elijah Rain Phelps	2.05	2.55
Skewb	Parker Trager	2.23	2.96
Square-1	Bailing Hou	7.45	8.78

The PB harvest

110 set · 41 still standing

Joshua Broderick Phillips — 4×4 single 25.62: into the top 0.88% of the event's history.
Saisabari Ramesh — Megaminx single 41.09: into the top 1.9% of the event's history.
Benjamin Costantini — 3×3 single 9.54: into the top 6.2% of the event's history.
Zhuoyuan Du — 3×3 single 9.56: into the top 6.3% of the event's history.
Thiago Han — 6×6 single 1:55.43: into the top 9.3% of the event's history.
Ashwanth M. Aroon — 3×3 single 10.68: into the top 9.5% of the event's history.
Joshua Costantini — 3×3 one-handed single 15.76: into the top 9.7% of the event's history.
Ethan Mai — 5×5 single 1:11.47: into the top 12.7% of the event's history.

First-timers

Twelve 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

2 regional records were set at this competition.

The field

95 competitors · 765 results · 13 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. Curtis Chai won it with a 7.10 average. Hold your cube white centre up, green centre facing you, follow each sequence, and check against the pictures.

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

solve 1

solve 2

solve 3

solve 4

solve 5

Race this final

Everyone who competed

95 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.