16 May 2016

• 19:1919:19, 16 May 2016 diff hist +18 Proofs without words →Miscellaneous
• 19:1719:17, 16 May 2016 diff hist +2,237 Proofs without words →Miscellaneous
• 19:1619:16, 16 May 2016 diff hist 0 m Viviani's theorem →Proof
• 19:1419:14, 16 May 2016 diff hist +2,109 Viviani's theorem →Proof

30 December 2015

• 15:0615:06, 30 December 2015 diff hist +13 m 2014 AMC 10B Problems/Problem 24 →Problem
• 15:0515:05, 30 December 2015 diff hist +2 m 2014 AMC 10B Problems/Problem 24 →Problem
• 15:0515:05, 30 December 2015 diff hist −6 2014 AMC 10B Problems/Problem 24 →Problem

16 June 2015

• 19:5919:59, 16 June 2015 diff hist +115 m 2005 AMC 8 Problems/Problem 21 →Solution

10 June 2015

• 07:0007:00, 10 June 2015 diff hist +618 N 2002 IMO Problems/Problem 1 Created page with "<math>S</math> is the set of all <math>(h,k)</math> with <math>h,k</math> non-negative integers such that <math>h + k < n</math>. Each element of <math>S</math> is colored red..."

19 April 2015

• 20:4420:44, 19 April 2015 diff hist +1,301 2015 AMC 10B Problems/Problem 24 →Solution

7 April 2015

• 12:1412:14, 7 April 2015 diff hist +123 2015 AMC 10A Problems/Problem 10 →Solution
• 00:3500:35, 7 April 2015 diff hist −16 2015 AMC 10A Problems/Problem 10 →Solution
• 00:3300:33, 7 April 2015 diff hist −6 2015 AMC 10A Problems/Problem 10 →Solution
• 00:3300:33, 7 April 2015 diff hist +952 2015 AMC 10A Problems/Problem 10 →Solution

20 March 2015

• 21:2221:22, 20 March 2015 diff hist +23 2015 AIME I Problems/Problem 6 →Solution
• 21:2121:21, 20 March 2015 diff hist +39 2015 AIME I Problems/Problem 6 →Solution
• 21:2021:20, 20 March 2015 diff hist +23 m 2015 AIME I Problems/Problem 6 →Solution
• 21:1921:19, 20 March 2015 diff hist +247 m 2015 AIME I Problems/Problem 6 →Solution