21 September 2025

• curprev 14:0414:04, 21 September 2025 Andrewzhong2012 talk contribs m 4,299 bytes +1 →Solution 1

25 February 2025

• curprev 18:2418:24, 25 February 2025 Daijobu talk contribs m 4,298 bytes +173 No edit summary

9 December 2024

• curprev 16:0716:07, 9 December 2024 Kevin2010 talk contribs 4,125 bytes +27 →Solution 2

16 November 2024

• curprev 15:1115:11, 16 November 2024 Polya mouse talk contribs m 4,098 bytes +39 →Solution 2
• curprev 15:0915:09, 16 November 2024 Polya mouse talk contribs 4,059 bytes +49 →Solution 2

28 November 2023

• curprev 21:3821:38, 28 November 2023 Daremo talk contribs m 4,010 bytes −19 No edit summary

3 January 2021

• curprev 00:3000:30, 3 January 2021 Jjmath123 talk contribs 4,029 bytes +905 Cleaned up proof for Solution 1 and added an additional proof

1 July 2020

• curprev 20:0820:08, 1 July 2020 Aops turtle talk contribs m 3,124 bytes 0 →Solution 2
• curprev 20:0820:08, 1 July 2020 Aops turtle talk contribs m 3,124 bytes −508 No edit summary

16 January 2018

• curprev 23:5323:53, 16 January 2018 Bobjoe123 talk contribs m 3,632 bytes 0 →See also
• curprev 23:5323:53, 16 January 2018 Bobjoe123 talk contribs m 3,632 bytes 0 →See also

1 April 2017

• curprev 13:4113:41, 1 April 2017 Mathislife16 talk contribs m 3,632 bytes 0 →Solution 2

19 June 2014

• curprev 19:0819:08, 19 June 2014 Mathgeek2006 talk contribs 3,632 bytes 0 →Solution 3

4 July 2013

• curprev 19:1819:18, 4 July 2013 Nathan wailes talk contribs 3,632 bytes +15 No edit summary

5 March 2013

• curprev 18:4918:49, 5 March 2013 Gengkev talk contribs 3,617 bytes −292 Undo revision 51653 by Gengkev (talk)
• curprev 18:3318:33, 5 March 2013 Gengkev talk contribs 3,909 bytes +292 →Solution 1

30 June 2011

• curprev 01:0301:03, 30 June 2011 Gravel talk contribs 3,617 bytes +1 →Solution 3
• curprev 01:0201:02, 30 June 2011 Gravel talk contribs m 3,616 bytes +24 →Solution 3
• curprev 01:0101:01, 30 June 2011 Gravel talk contribs m 3,592 bytes −23 →Solution 3
• curprev 00:5900:59, 30 June 2011 Gravel talk contribs 3,615 bytes +1 →Solution 3
• curprev 00:5800:58, 30 June 2011 Gravel talk contribs 3,614 bytes 0 →Solution 3
• curprev 00:5700:57, 30 June 2011 Gravel talk contribs 3,614 bytes +2 →Solution 3
• curprev 00:5500:55, 30 June 2011 Gravel talk contribs 3,612 bytes −27 →Solution 3
• curprev 00:5500:55, 30 June 2011 Gravel talk contribs 3,639 bytes −1 →Solution 3
• curprev 00:5400:54, 30 June 2011 Gravel talk contribs 3,640 bytes +1,081 →Solution

1 March 2009

• curprev 16:4116:41, 1 March 2009 Darksigma talk contribs 2,559 bytes −90 →Solution 1
• curprev 16:3916:39, 1 March 2009 Darksigma talk contribs 2,649 bytes +69 →Solution 1
• curprev 16:3716:37, 1 March 2009 Darksigma talk contribs 2,580 bytes −2 →Solution 1

19 April 2008

• curprev 16:3616:36, 19 April 2008 Azjps talk contribs m 2,582 bytes +175 note
• curprev 14:2314:23, 19 April 2008 I like pie talk contribs 2,407 bytes +363 Added 2nd solution, slight formatting

23 March 2008

• curprev 12:5912:59, 23 March 2008 Azjps talk contribs m 2,044 bytes +12 →Solution: more typos
• curprev 12:5812:58, 23 March 2008 Azjps talk contribs m 2,032 bytes −20 →Solution: correct asy
• curprev 12:5712:57, 23 March 2008 Azjps talk contribs 2,052 bytes +2,052 solution by Boy Soprano II