Achievement: Speed IV

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Speed IV

Finish a collection between 10k and 8k with an avg. time of under 18 seconds.*

*The collection must contain at least 100 problems.

Recently completed by

Lethologian 1d, Brook Roberts 2d, Patrick361 1k, Bruinfix 1k, Scorpion 2.4 2d, Julian Jenewein 2k, Wolland 2k, DaAffegoat 1k, Mega File 3k, Erisia Music 2k

and 519 others.