16 January 2022

• 13:1613:16, 16 January 2022 diff hist +134 2005 AMC 12B Problems/Problem 25 →Solution 2

3 May 2021

• 16:2116:21, 3 May 2021 diff hist −19 1988 AIME Problems/Problem 14 →Solution 4(the best solution)

6 March 2021

• 17:4917:49, 6 March 2021 diff hist +103 2012 AIME I Problems/Problem 3 →Solution 2

18 August 2020

• 13:1113:11, 18 August 2020 diff hist +94 2019 IMO Problems/Problem 1 No edit summary

4 June 2020

• 12:5312:53, 4 June 2020 diff hist +10 2011 AIME II Problems/Problem 10 →Solution 2

2 June 2020

• 13:2513:25, 2 June 2020 diff hist +5 m 2019 AIME I Problems/Problem 15 →Solution 5 (Easy)

11 December 2019

• 17:4017:40, 11 December 2019 diff hist +1 2009 AIME I Problems/Problem 10 →Solution 2

22 August 2019

• 13:2213:22, 22 August 2019 diff hist +2 AoPS Wiki:Competition ratings →China TST

13 April 2019

• 19:5419:54, 13 April 2019 diff hist −3 Joining an ARML team →Montgomery (Montgomery County, MD)

18 June 2018

• 08:3208:32, 18 June 2018 diff hist +9 2017 IMO Problems/Problem 3 →Solution

16 June 2018

• 20:2120:21, 16 June 2018 diff hist +7 N South African Mathematics Olympiad omg