9 July 2020

• 11:1711:17, 9 July 2020 diff hist 0 2019 USAMO Problems/Problem 2 →Solution

2 March 2020

• 01:3701:37, 2 March 2020 diff hist +2 2019 USAMO Problems/Problem 2 →Solution
• 01:3501:35, 2 March 2020 diff hist +3 2019 USAMO Problems/Problem 2 →Solution
• 01:3401:34, 2 March 2020 diff hist −41 2019 USAMO Problems/Problem 2 →Solution
• 01:3301:33, 2 March 2020 diff hist −631 2019 USAMO Problems/Problem 2 →Solution

25 June 2019

• 11:3611:36, 25 June 2019 diff hist +19 2019 USAJMO Problems/Problem 3 →Solution
• 11:3611:36, 25 June 2019 diff hist 0 2019 USAJMO Problems/Problem 3 →Solution
• 11:3511:35, 25 June 2019 diff hist −5 2019 USAJMO Problems/Problem 3 →Solution
• 11:3411:34, 25 June 2019 diff hist −10 2019 USAJMO Problems/Problem 3 →Solution
• 11:3211:32, 25 June 2019 diff hist +1,379 2019 USAJMO Problems/Problem 3 →Solution

6 January 2019

• 16:4516:45, 6 January 2019 diff hist +3 m 1999 AIME Problems/Problem 11 →Alternate Solution

24 November 2018

• 23:3423:34, 24 November 2018 diff hist +297 2018 AMC 8 Problems/Problem 18 →Solution