17 February 2012

• 22:1522:15, 17 February 2012 diff hist +51 2007 AMC 12A Problems/Problem 24 →Solution

31 January 2012

• 23:0023:00, 31 January 2012 diff hist −11 2010 AMC 12B Problems/Problem 25 →Problem 25

16 January 2012

• 22:3422:34, 16 January 2012 diff hist 0 2011 AIME II Problems →Problem 4
• 22:3422:34, 16 January 2012 diff hist +222 2011 AIME II Problems →Problem 4

14 January 2012

• 21:2521:25, 14 January 2012 diff hist −13 m 2011 AIME II Problems/Problem 10 →Solution
• 21:1321:13, 14 January 2012 diff hist −4 2011 AIME II Problems/Problem 9 →Solution

28 December 2011

• 22:3322:33, 28 December 2011 diff hist −34 2005 AIME I Problems/Problem 7 →Solution 3
• 22:3322:33, 28 December 2011 diff hist +671 2005 AIME I Problems/Problem 7 →Solution
• 22:2122:21, 28 December 2011 diff hist −1 Stewart's Theorem →Statement
• 21:5721:57, 28 December 2011 diff hist +8 m 2005 AIME I Problems/Problem 6 →Solution
• 21:3321:33, 28 December 2011 diff hist −4 m 2005 AIME I Problems/Problem 5 →Problem
• 21:3321:33, 28 December 2011 diff hist +7 2005 AIME I Problems/Problem 5 →Solution

23 December 2011

• 21:3321:33, 23 December 2011 diff hist −1 2011 AMC 12B Problems/Problem 23 →Solution
• 21:3321:33, 23 December 2011 diff hist +1 2011 AMC 12B Problems/Problem 23 →Solution
• 21:3221:32, 23 December 2011 diff hist −3 2011 AMC 12B Problems/Problem 23 →Solution

21 August 2010

• 17:4917:49, 21 August 2010 diff hist +334 1991 AIME Problems/Problem 12 →Solution 5
• 17:1617:16, 21 August 2010 diff hist 0 m 1991 AIME Problems/Problem 12 →Solution 5