27 June 2018

• 09:5909:59, 27 June 2018 diff hist +59 m 2005 AIME II Problems/Problem 3 →Solution 2

4 February 2018

• 23:0123:01, 4 February 2018 diff hist 0 m 2011 AMC 10A Problems/Problem 18 →Problem 18

30 January 2018

• 22:0622:06, 30 January 2018 diff hist +5 m 2011 AMC 10A Problems/Problem 4 →Solution 2

17 January 2018

• 16:1916:19, 17 January 2018 diff hist +1 m 2005 AIME II Problems/Problem 3 →Solution 2

16 January 2018

• 19:5919:59, 16 January 2018 diff hist +1,827 2005 AIME II Problems/Problem 3 →Solution
• 18:0718:07, 16 January 2018 diff hist −8 Physics scholarships →National physics scholarships

15 January 2018

• 19:4619:46, 15 January 2018 diff hist −5 m 2016 AMC 10B Problems/Problem 17 →Solution 1

29 December 2017

• 11:2511:25, 29 December 2017 diff hist +8 m 1989 AIME Problems/Problem 2 →Solution

5 May 2017

• 08:5708:57, 5 May 2017 diff hist +8 1985 AIME Problems/Problem 10 →Solution 1
• 08:5708:57, 5 May 2017 diff hist +8 1985 AIME Problems/Problem 10 →Solution 4
• 08:5608:56, 5 May 2017 diff hist +8 1985 AIME Problems/Problem 10 →Solution 2
• 08:5008:50, 5 May 2017 diff hist +123 2003 AMC 12A Problems/Problem 16 →Solution

27 April 2017

• 20:4620:46, 27 April 2017 diff hist +2 1989 AIME Problems/Problem 5 →Solution 2

25 April 2017

• 09:4309:43, 25 April 2017 diff hist +13 1989 AIME Problems/Problem 5 →Solution 2
• 09:4209:42, 25 April 2017 diff hist +13 1989 AIME Problems/Problem 5 →Solution 2

24 April 2017

• 08:5808:58, 24 April 2017 diff hist +8 m 1990 AIME Problems/Problem 13 →Solution
• 02:0102:01, 24 April 2017 diff hist 0 1989 AIME Problems/Problem 5 →Solution 2

23 April 2017

• 11:4611:46, 23 April 2017 diff hist +41 1989 AIME Problems/Problem 5 →Solution 2
• 11:4211:42, 23 April 2017 diff hist +605 1989 AIME Problems/Problem 5 →Solution
• 10:4710:47, 23 April 2017 diff hist −1 1989 AIME Problems/Problem 1 →Solution 1