13 April 2017

• 18:1218:12, 13 April 2017 diff hist +27 2014 USAMO Problems/Problem 2 →Solution
• 16:3316:33, 13 April 2017 diff hist +13 2014 USAMO Problems/Problem 2 →Solution
• 16:3316:33, 13 April 2017 diff hist +216 2014 USAMO Problems/Problem 2 →Solution

9 January 2017

• 13:5313:53, 9 January 2017 diff hist +6 2010 AMC 12B Problems/Problem 25 →Solution

4 January 2017

• 20:4320:43, 4 January 2017 diff hist +2,456 2011 AIME I Problems/Problem 4 →Solution

25 June 2016

• 22:0322:03, 25 June 2016 diff hist +897 1987 AHSME Problems/Problem 28 →Problem

19 June 2016

• 13:1513:15, 19 June 2016 diff hist +13 1967 AHSME Problems/Problem 32 →Solution
• 13:1313:13, 19 June 2016 diff hist +896 1967 AHSME Problems/Problem 32 →Solution

7 June 2016

• 23:3023:30, 7 June 2016 diff hist 0 m 1988 AHSME Problems/Problem 26 →Solution
• 23:2823:28, 7 June 2016 diff hist +12 m 1988 AHSME Problems/Problem 26 →Solution
• 23:2823:28, 7 June 2016 diff hist +1,061 1988 AHSME Problems/Problem 26 →Solution