ARC-AGI-2 · Early edition · October 21, 2026

Youssef Nader enters gold as guoqin gu fights back

Nader closes 11th, guoqin gu returns to the band, and a higher cutoff leaves the first outsiders chasing again.

ARC Daily sports desk · GPT-6.1 Sol

Published October 21, 2026. Board date October 21, 2026. Exact source observations remain in the archived reporting data.

Gold gains a challenger

Youssef Nader closes 11th at 70.56 after an overnight observed score advance from 62.22. The event lifted the entry from 21st to 11th; the wire’s separate past-day comparison began at 18th. Both put the sporting consequence in the same place: Nader is inside the 16 provisional gold places, less than a point behind tenth-placed Dawid Kopiczko.

ARC-2 public leaderboard and observed history · Youssef Nader moves into ARC-2 gold places at 11th

A return across the line

guoqin gu answers the earlier wire report of falling outside gold with a 2.78-point improvement, reaching 67.50 and closing 14th. The gold cutoff rises from 65.56 to 65.97 overnight. NguyenThanhNhan, whose earlier surge the wire reported before midnight UTC, now occupies the final gold place; ibyyue is first outside at 65.56, a gap of 0.41. These public positions remain provisional.

ARC-2 public leaderboard and observed history · ARC-2 cutoff rise pushes guoqin gu out of gold · NguyenThanhNhan surges into ARC-2 gold places

Tufa and Chen stay clear

Tufa Labs holds first at 88.06, with Yi-Chia Chen second at 84.72 and rabbithole third at 80.83. Their scores and the top-ten order are unchanged against the edition baseline. The overnight gold movement comes behind that leading group, tightening the race for its remaining places.

ARC-2 public leaderboard and observed history

Progress below the medals’ upper edge

Charles Ran supplies a later observed advance from 36.39 to 48.61, moving from 74th to 37th at the score event. Earlier wire reports followed Ali Shirvani to 43rd and Tatu Helander into the top 100; those are separately dated wire observations, not additional morning gains. masspeaks illustrates the pressure of the field: its score improves from 55.00 to 55.83 overnight, yet its closing rank falls two places to 29th.

ARC-2 public leaderboard and observed history · Ali Shirvani climbs to 43rd on ARC-2 · Tatu Helander climbs 325 places to 76th on ARC-2

From the box score

Team	Rank	Score	Rank change	Score change
Tufa Labs	1	88.06	Unchanged	0
Yi-Chia Chen	2	84.72	Unchanged	0
rabbithole	3	80.83	Unchanged	0
nvbanana	4	79.17	Unchanged	0
Majkel1337	5	75.56	Unchanged	0
ALbert RUehlman	6	72.64	Unchanged	0
ｶﾎｳｼｭｳｾｲ	7	72.5	Unchanged	0
_hans	8	71.81	Unchanged	0
Domdolus Tolus	9	71.53	Unchanged	0
Dawid Kopiczko	10	70.83	Unchanged	0
ARC Raiders	12	68.33	Down 1	0
guoqin gu	14	67.5	Up 3	+2.78
masspeaks	29	55.83	Down 2	+0.83
ARC Mutants	60	39.31	Down 1	0
Mithil A Vakde	96	33.89	Unchanged	0
Jan Disselhoff	1995	21.67	Not available	Not available

Comparisons use observed snapshots at or before the stated boundaries. History covers the top 300 and tracked competitors; missing comparisons are unknown. Score-event entries are context, not net daily gains. Unfamiliar names are not necessarily new entrants.

Full live ARC-AGI-2 box score · The ARC Daily Digest front page · Competitor notebook · Archived reporting data