Problems by Yujie An

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Drawing Circles	0.18	1362	147	95	65%	8.5Hard	en
Quartets	0.00	3083	12	8	67%	5.9Hard	en
Superdoku	0.00	976	345	201	58%	6.5Hard	en
Waterworld	0.01	40	149	139	93%	2.2Easy	en