3 March 2020

• 12:3912:39, 3 March 2020 diff hist +33 m 2018 AIME I Problems/Problem 4 →Solution 2 (Easy Similar Triangles)
• 12:3312:33, 3 March 2020 diff hist 0 m 2018 AIME I Problems/Problem 4 →Solution 2 (Easy Similar Triangles)

2 March 2020

• 12:1712:17, 2 March 2020 diff hist +9 m 2018 AIME II Problems/Problem 8 →Solution 4 (Casework)

24 January 2020

• 11:2011:20, 24 January 2020 diff hist +47 m 2019 AMC 10B Problems/Problem 23 →Solution 1
• 10:4210:42, 24 January 2020 diff hist 0 2019 AMC 10B Problems/Problem 20 →Solution

4 August 2017

• 11:4511:45, 4 August 2017 diff hist +13 m 2013 AMC 10B Problems →Problem 21

16 February 2017

• 15:3115:31, 16 February 2017 diff hist 0 2017 AMC 10B Problems →Problem 15