11 February 2016

• 21:2221:22, 11 February 2016 diff hist −57 m 2008 AIME II Problems/Problem 13 →Solution 2 using Calculus (Cheating(not really I love using calculus in AIME))

30 January 2016

• 19:1419:14, 30 January 2016 diff hist −689 2009 AMC 10B Problems/Problem 25 →Solution 1
• 18:4818:48, 30 January 2016 diff hist 0 2006 AMC 12B Problems/Problem 24 →Solution

1 January 2016

• 18:2118:21, 1 January 2016 diff hist +8 m 2004 AIME I Problems/Problem 6 →Solution
• 16:5616:56, 1 January 2016 diff hist +8 2004 AIME I Problems/Problem 3 →Solution current

25 November 2015

• 17:4917:49, 25 November 2015 diff hist 0 m 2003 AMC 12B Problems/Problem 24 →Solution 1

9 August 2015

• 16:3216:32, 9 August 2015 diff hist +378 m 2015 USAMO Problems/Problem 4 →Solution

24 May 2014

• 21:2621:26, 24 May 2014 diff hist +49 m 2014 AIME I Problems/Problem 9 →Solution 2
• 21:2021:20, 24 May 2014 diff hist −5 m 2014 AIME I Problems/Problem 6 →Solution 1