17 August 2019

• curprev 02:3802:38, 17 August 2019 Mrmxs talk contribs m 11,141 bytes +15 →Solution 6
• curprev 02:3502:35, 17 August 2019 Mrmxs talk contribs m 11,126 bytes +2,206 →Solutions

19 May 2015

• curprev 20:4220:42, 19 May 2015 Mathgeek2006 talk contribs m 8,920 bytes −2 →Solution 5

12 August 2014

• curprev 21:5021:50, 12 August 2014 5849206328x talk contribs 8,922 bytes +2,893 →Solutions: other official solutions
• curprev 20:5920:59, 12 August 2014 5849206328x talk contribs m 6,029 bytes +109 No edit summary
• curprev 20:5120:51, 12 August 2014 5849206328x talk contribs m 5,920 bytes −12 →Resources

4 July 2013

• curprev 12:4312:43, 4 July 2013 Nathan wailes talk contribs 5,932 bytes +15 No edit summary

5 September 2012

• curprev 23:0323:03, 5 September 2012 LLaiZeta talk contribs m 5,917 bytes 0 No edit summary

6 June 2011

• curprev 11:3711:37, 6 June 2011 Btilm305 talk contribs 5,917 bytes −65 removed link
• curprev 11:3711:37, 6 June 2011 Btilm305 talk contribs 5,982 bytes −77 black square not needed

23 March 2009

• curprev 16:2616:26, 23 March 2009 Serialk11r talk contribs 6,059 bytes +2,978 No edit summary

1 May 2008

• curprev 18:5718:57, 1 May 2008 I like pie talk contribs 3,081 bytes −6 Fixed link
• curprev 17:2617:26, 1 May 2008 I like pie talk contribs m 3,087 bytes +1 Moved TOC + minor edits
• curprev 16:1416:14, 1 May 2008 Boy Soprano II talk contribs 3,086 bytes +3,086 problem and solution