8 July 2019

• 16:3116:31, 8 July 2019 diff hist +1 m 1981 USAMO Problems/Problem 1 →Solution current

25 June 2019

• 19:5119:51, 25 June 2019 diff hist +5 m 2012 USAJMO Problems/Problem 5 →Solution 1

3 February 2019

• 14:3214:32, 3 February 2019 diff hist +1 m 2013 AIME II Problems/Problem 14 →The Proof

24 December 2018

• 23:5523:55, 24 December 2018 diff hist +8 m 2000 AIME I Problems/Problem 15 →Solution

21 December 2018

• 23:3923:39, 21 December 2018 diff hist +1 m 1997 AIME Problems/Problem 6 →Solution 3 current
• 23:3823:38, 21 December 2018 diff hist +1 m 1997 AIME Problems/Problem 6 →Solution 2
• 23:3823:38, 21 December 2018 diff hist +1 m 1997 AIME Problems/Problem 6 →Solution 1
• 16:4916:49, 21 December 2018 diff hist +13 m 1996 AIME Problems →Problem 2 current
• 16:4316:43, 21 December 2018 diff hist 0 m 1996 AIME Problems →Problem 15

20 December 2018

• 20:3120:31, 20 December 2018 diff hist +44 m 1996 AIME Problems/Problem 6 →Solution
• 20:3020:30, 20 December 2018 diff hist +11 m 1996 AIME Problems/Problem 6 →Solution

17 December 2018

• 23:0023:00, 17 December 2018 diff hist 0 m 2018 AIME I Problems →Problem 10

4 November 2018

• 14:1914:19, 4 November 2018 diff hist −51 m 1968 AHSME Problems/Problem 19 →Solution

1 November 2018

• 20:0920:09, 1 November 2018 diff hist +1 m 1968 AHSME Problems/Problem 30 →Solution 1

22 October 2018

• 22:4822:48, 22 October 2018 diff hist +1 m 2016 AMC 10B Problems/Problem 15 →Solution 3

21 October 2018

• 18:5918:59, 21 October 2018 diff hist 0 m 2018 AMC 12B Problems/Problem 22 →Solution 2