28 January 2021

• curprev 23:4023:40, 28 January 2021 Hashtagmath talk contribs 2,488 bytes −6 No edit summary

5 November 2018

• curprev 18:5918:59, 5 November 2018 Mp8148 talk contribs m 2,494 bytes −1 →Solution 3

11 October 2018

• curprev 18:1518:15, 11 October 2018 Br32wa talk contribs m 2,495 bytes +16 →Solution 3

12 August 2018

• curprev 22:5222:52, 12 August 2018 Bawbdmo talk contribs 2,479 bytes 0 →Solution 3
• curprev 22:5122:51, 12 August 2018 Bawbdmo talk contribs 2,479 bytes −2 →Solution 3

15 July 2018

• curprev 12:1112:11, 15 July 2018 Flyhawkeye talk contribs 2,481 bytes +636 Added Solution 3

6 October 2016

• curprev 18:0918:09, 6 October 2016 Wiler5002 talk contribs 1,845 bytes −90 →Solution 2: Edited for clarity.

22 April 2016

• curprev 19:3819:38, 22 April 2016 Pega969 talk contribs m 1,935 bytes −15 →Solution

4 July 2013

• curprev 18:2918:29, 4 July 2013 Nathan wailes talk contribs 1,950 bytes +15 No edit summary

25 August 2011

• curprev 11:4011:40, 25 August 2011 Djmathman talk contribs 1,935 bytes +1,188 →Solution: Added a second solution

29 July 2008

• curprev 16:5616:56, 29 July 2008 Azjps talk contribs m 747 bytes +160 minor

13 February 2007

• curprev 21:2921:29, 13 February 2007 Azjps talk contribs 587 bytes +304 hastily written solution, box

21 January 2007

• curprev 20:5520:55, 21 January 2007 Minsoens talk contribs 283 bytes +213 No edit summary

9 July 2006

• curprev 17:2917:29, 9 July 2006 Joml88 talk contribs 70 bytes +70 No edit summary