4 February 2017

• 18:5118:51, 4 February 2017 diff hist +218 2009 AMC 12B Problems/Problem 9 →Solution
• 10:0810:08, 4 February 2017 diff hist +110 1998 AHSME Problems/Problem 19 →Solution 2 current
• 10:0410:04, 4 February 2017 diff hist +528 1998 AHSME Problems/Problem 19 →Solution

28 December 2016

• 12:3812:38, 28 December 2016 diff hist −5 Balkan Mathematical Olympiad →Romania

27 November 2016

• 22:3322:33, 27 November 2016 diff hist +11 1972 USAMO Problems/Problem 1 →Solution 3 (very long, but detailed)
• 22:3222:32, 27 November 2016 diff hist +11 m 1972 USAMO Problems/Problem 1 →Solution 3 (very long, but detailed)

23 November 2016

• 16:1916:19, 23 November 2016 diff hist −363 2016 AMC 8 Problems/Problem 13 →Solution 2
• 16:1916:19, 23 November 2016 diff hist +364 2016 AMC 8 Problems/Problem 13 →Solution
• 16:1816:18, 23 November 2016 diff hist +363 2016 AMC 8 Problems/Problem 13 →Solution

23 September 2016

• 20:5720:57, 23 September 2016 diff hist +709 1984 AIME Problems/Problem 5 →Solution

8 August 2016

• 18:0218:02, 8 August 2016 diff hist −1 m 2016 AMC 12B Problems/Problem 17 →Solution
• 18:0118:01, 8 August 2016 diff hist −1 2016 AMC 12B Problems/Problem 17 →Solution
• 18:0018:00, 8 August 2016 diff hist +499 2016 AMC 12B Problems/Problem 17 →Solution