15 June 2020

• 18:4218:42, 15 June 2020 diff hist +1 m 2011 USAJMO Problems/Problem 3 →Solution 1
• 18:1918:19, 15 June 2020 diff hist −42 m 2011 USAJMO Problems/Problem 3 →Solution 1
• 18:0718:07, 15 June 2020 diff hist −6 m 2011 USAJMO Problems/Problem 3 →Solution 1
• 18:0418:04, 15 June 2020 diff hist +29 m 2011 USAJMO Problems/Problem 3 →Solution 1
• 18:0018:00, 15 June 2020 diff hist +1 2011 USAJMO Problems/Problem 3 →Solution 1
• 17:5817:58, 15 June 2020 diff hist +1,616 m 2011 USAJMO Problems/Problem 3 →Solutions

3 March 2020

• 16:4116:41, 3 March 2020 diff hist +797 m Nesbitt's Inequality →Proofs

4 January 2020

• 19:5419:54, 4 January 2020 diff hist +136 m Medial triangle No edit summary

9 June 2019

• 20:1320:13, 9 June 2019 diff hist −45 m 2007 AIME I Problems/Problem 10 →Solution 2
• 20:0920:09, 9 June 2019 diff hist +1,564 m 2007 AIME I Problems/Problem 10 →Solution 2
• 19:5519:55, 9 June 2019 diff hist +20 m 2007 AIME I Problems/Problem 10 →Solution 1
• 19:5519:55, 9 June 2019 diff hist +2,084 m 2007 AIME I Problems/Problem 10 →Solution 3
• 19:5419:54, 9 June 2019 diff hist −2,084 m 2007 AIME I Problems/Problem 10 →Solution 4
• 19:5419:54, 9 June 2019 diff hist 0 2007 AIME I Problems/Problem 10 →Solution 2
• 19:5419:54, 9 June 2019 diff hist −20 m 2007 AIME I Problems/Problem 10 →Solution 4
• 19:5419:54, 9 June 2019 diff hist 0 m 2007 AIME I Problems/Problem 10 →Solution 7
• 19:5319:53, 9 June 2019 diff hist 0 m 2007 AIME I Problems/Problem 10 →Solution 6
• 19:5319:53, 9 June 2019 diff hist 0 m 2007 AIME I Problems/Problem 10 →Solution 5
• 19:5319:53, 9 June 2019 diff hist 0 m 2007 AIME I Problems/Problem 10 →Solution 4
• 19:5319:53, 9 June 2019 diff hist +20 m 2007 AIME I Problems/Problem 10 →Solution 3

10 March 2019

• 19:4019:40, 10 March 2019 diff hist +3 m 2011 AIME I Problems/Problem 14 →Diagram
• 19:3919:39, 10 March 2019 diff hist +13 2011 AIME I Problems/Problem 14 →Diagram
• 19:3819:38, 10 March 2019 diff hist +102 m 2011 AIME I Problems/Problem 14 →Diagram
• 19:3019:30, 10 March 2019 diff hist +1 m 2011 AIME I Problems/Problem 14 →Solution 4
• 19:3019:30, 10 March 2019 diff hist +495 m 2011 AIME I Problems/Problem 14 →Solution 4

6 March 2019

• 00:3300:33, 6 March 2019 diff hist +17 m Chicken McNugget Theorem →Proof 1

19 February 2019

• 00:2400:24, 19 February 2019 diff hist +123 m 2019 AMC 12A Problems/Problem 17 →Solution 1

12 February 2019

• 13:2313:23, 12 February 2019 diff hist +1 m Mass points →Examples

8 March 2018

• 22:0422:04, 8 March 2018 diff hist +5 m 2018 AIME I Problems/Problem 9 →Solution 1
• 22:0122:01, 8 March 2018 diff hist −1 m 2018 AIME I Problems/Problem 6 →Solution

8 February 2018

• 19:5419:54, 8 February 2018 diff hist +18 2018 AMC 10A Problems/Problem 25 →Solution

9 January 2018

• 00:4400:44, 9 January 2018 diff hist −10 m 2015 AMC 10A Problems/Problem 25 →Solution 2

11 December 2017

• 22:0122:01, 11 December 2017 diff hist −77 Nine point circle →Third Proof of Existence
• 22:0022:00, 11 December 2017 diff hist +76 m Nine point circle →Second Proof of Existence

17 September 2017

• 14:3614:36, 17 September 2017 diff hist +18 m 2006 AMC 12A Problems/Problem 14 →Solution 3

3 September 2017

• 18:3818:38, 3 September 2017 diff hist −14 m 2008 AMC 10A Problems/Problem 20 →Solution
• 18:3718:37, 3 September 2017 diff hist +14 m 2008 AMC 10A Problems/Problem 20 →Solution

1 August 2017

• 18:5818:58, 1 August 2017 diff hist −6 m 1986 AHSME Problems/Problem 11 →Problem
• 18:5718:57, 1 August 2017 diff hist −4 m 1986 AHSME Problems/Problem 11 →Solution

1 June 2017

• 20:1020:10, 1 June 2017 diff hist −29 2002 AMC 12A Problems/Problem 19 →cocohearts is awesome
• 20:1020:10, 1 June 2017 diff hist −29 2002 AMC 12A Problems/Problem 19 →cocohearts is awesome
• 20:0920:09, 1 June 2017 diff hist −29 2002 AMC 12A Problems/Problem 19 →cocohearts is awesome
• 20:0920:09, 1 June 2017 diff hist +31 2002 AMC 12A Problems/Problem 19 →Solution
• 20:0920:09, 1 June 2017 diff hist +29 2002 AMC 12A Problems/Problem 19 →See Also
• 20:0920:09, 1 June 2017 diff hist +29 2002 AMC 12A Problems/Problem 19 →See Also
• 20:0820:08, 1 June 2017 diff hist +3 2002 AMC 12A Problems/Problem 19 →Solution
• 20:0820:08, 1 June 2017 diff hist −3 m 2002 AMC 12A Problems/Problem 19 →Solution
• 20:0620:06, 1 June 2017 diff hist −29 2002 AMC 12A Problems/Problem 19 →cocohearts is awesome
• 20:0620:06, 1 June 2017 diff hist −14 2002 AMC 12A Problems/Problem 19 →See Also
• 20:0520:05, 1 June 2017 diff hist +44 m 2002 AMC 12A Problems/Problem 19 →See Also