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40 contest(s) 1,745 accounts(s)

Country distribution

N Country Participants
number
1
China 		17

Most top

N Handle T1 T2 T3 T10
1
Hanhong Xue 		· · 1 2

Most participations

N Handle Contests
count
1
Hanhong Xue 		7
2
Guangxi Liu 		5
3
Li Jianjun 		4
4
Erjin Zhou 		2
5
Mao Jingshu 		2
6
Michael Ho 		2
7
Arisa Minakami 		1
8
Xu Rui 		1
9
BiaoYong Liu 		1
10
Jingbo Shang 		1
more

Most recent activity

N Handle Last
activity
1
Guangxi Liu 		March 24, 2025
2
Xu Rui 		Aug. 10, 2022
3
Arisa Minakami 		Aug. 7, 2022
4
Michael Ho 		Nov. 26, 2018
5
Zhirui Fan 		Jan. 29, 2017
6
Hanhong Xue 		May 25, 2016
7
Mark Chen 		March 9, 2016
8
Xi Lin 		Nov. 16, 2015
9
Kun Tang 		Nov. 16, 2015
10
Li Jianjun 		Feb. 25, 2013
more

Past contests

End Time Contest
June 21, 2025 Magic Hexagons
June 21, 2025 Nearly Magic Hexagons
Jan. 4, 2025 Balto's Puzzle
Nov. 5, 2022 Stepping Stones
Sept. 8, 2022 Oddly Triangular
Dec. 27, 2021 AP Math
Sept. 18, 2021 Monochromatic Triangles
July 18, 2020 Sums of Powers
Oct. 26, 2019 Reversing Nearness
Feb. 2, 2019 Hexagonal Neighbors
more