14 February 2019

• 15:4015:40, 14 February 2019 diff hist −1 m 2019 AMC 12B Problems/Problem 17 →Solution
• 15:3915:39, 14 February 2019 diff hist +16 m 2019 AMC 12B Problems/Problem 17 →Solution
• 15:3815:38, 14 February 2019 diff hist +104 m 2019 AMC 12B Problems/Problem 17 →Solution

21 November 2018

• 23:5523:55, 21 November 2018 diff hist 0 m 2008 AIME II Problems/Problem 9 →Solution 2
• 23:5423:54, 21 November 2018 diff hist +4 m 2008 AIME II Problems/Problem 9 →Solution 2
• 21:0721:07, 21 November 2018 diff hist 0 m 2008 AIME II Problems/Problem 9 →Solution 2: oops
• 21:0521:05, 21 November 2018 diff hist +42 2008 AIME II Problems/Problem 9 →Solution 2: fixing messed up grammar