15 October 2025

• curprev 18:2718:27, 15 October 2025 Mathloveryeah talk contribs 9,966 bytes +50 →See Also

21 July 2025

• curprev 11:5411:54, 21 July 2025 Aoum talk contribs 9,916 bytes −61 No edit summary

13 December 2024

• curprev 01:2501:25, 13 December 2024 Serena118 talk contribs 9,977 bytes +4 →Solution 3
• curprev 01:2301:23, 13 December 2024 Serena118 talk contribs 9,973 bytes +1 →Video Solution by OmegaLearn
• curprev 01:2301:23, 13 December 2024 Serena118 talk contribs 9,972 bytes +1 →Solution 5 (Risky Guessing)

13 October 2024

• curprev 20:0920:09, 13 October 2024 Mathboy282 talk contribs 9,971 bytes +571 →Solution 4 (Markov Chain)

15 July 2024

• curprev 10:0310:03, 15 July 2024 Goldroman talk contribs 9,400 bytes +1 →Solution 1

18 October 2023

• curprev 10:1510:15, 18 October 2023 Ashwin.s talk contribs m 9,399 bytes +2 →Solution 4 (Markov Chain)

6 November 2022

• curprev 06:1306:13, 6 November 2022 Mxelawlwnag talk contribs m 9,397 bytes 0 →Solution 5 (Risky Guessing)

4 November 2022

• curprev 06:3106:31, 4 November 2022 Pi is 3.14 talk contribs 9,397 bytes +86 →Video Solution

4 September 2022

• curprev 10:0510:05, 4 September 2022 Eibc talk contribs 9,311 bytes +45 →Solution 5 (Risky Guessing)
• curprev 10:0410:04, 4 September 2022 Eibc talk contribs 9,266 bytes +9 →Solution 5 (Risky Guessing)
• curprev 10:0410:04, 4 September 2022 Eibc talk contribs 9,257 bytes +616 →Solution 4 (Markov Chain)

3 August 2022

• curprev 11:0711:07, 3 August 2022 Shihan talk contribs m 8,641 bytes 0 →Solution 4 (Markov Chain)
• curprev 11:0111:01, 3 August 2022 Shihan talk contribs m 8,641 bytes −5 →Solution 4 (Markov Chain)

28 December 2021

• curprev 08:3108:31, 28 December 2021 Isabelchen talk contribs m 8,646 bytes +65 →Solution 4 (Markov Chain)

6 November 2021

• curprev 01:5801:58, 6 November 2021 Isabelchen talk contribs 8,581 bytes +1,250 No edit summary

25 April 2021

• curprev 11:0711:07, 25 April 2021 Bakedpotato66 talk contribs m 7,331 bytes +240 Edits

25 March 2021

• curprev 15:4915:49, 25 March 2021 Solasky talk contribs 7,091 bytes +250 →Solution 3
• curprev 15:4715:47, 25 March 2021 Solasky talk contribs 6,841 bytes +1,336 →Solution 2 (Symmetry)
• curprev 15:4615:46, 25 March 2021 Solasky talk contribs 5,505 bytes −1,331 →Solution 2 (Symmetry)
• curprev 15:4515:45, 25 March 2021 Solasky talk contribs 6,836 bytes +1,331 →Solution 2 (Symmetry)

16 April 2020

• curprev 20:5220:52, 16 April 2020 Technetiumdolomite talk contribs m 5,505 bytes −4 →Problem

1 February 2020

• curprev 17:3417:34, 1 February 2020 Vvluo talk contribs m 5,509 bytes +2 →Solution 1
• curprev 17:3417:34, 1 February 2020 Vvluo talk contribs m 5,507 bytes +5 →Solution 1
• curprev 17:3317:33, 1 February 2020 Vvluo talk contribs m 5,502 bytes +189 →Solution 1

12 January 2020

• curprev 16:3316:33, 12 January 2020 Shurong.ge talk contribs m 5,313 bytes +178 →Solution 2 (Symmetry)

11 January 2020

• curprev 20:0220:02, 11 January 2020 Lightmaster427 talk contribs m 5,135 bytes 0 →Problem

3 January 2020

• curprev 09:5109:51, 3 January 2020 Vireon talk contribs m 5,135 bytes +2 →Solution

1 January 2020

• curprev 06:5906:59, 1 January 2020 Jason the best talk contribs m 5,133 bytes −22 →Solution
• curprev 06:5106:51, 1 January 2020 Jason the best talk contribs m 5,155 bytes +22 →Solution
• curprev 06:4806:48, 1 January 2020 Jason the best talk contribs 5,133 bytes 0 →Problem

23 December 2019

• curprev 14:0314:03, 23 December 2019 J20080109 talk contribs m 5,133 bytes −9 →Solution 2 (Symmetry)

2 October 2019

• curprev 22:3422:34, 2 October 2019 Bjhhar talk contribs m 5,142 bytes 0 →Solution 2 (Symmetry)
• curprev 22:3322:33, 2 October 2019 Bjhhar talk contribs m 5,142 bytes −51 →Solution 2 (Symmetry)
• curprev 22:3322:33, 2 October 2019 Bjhhar talk contribs m 5,193 bytes −12 →Solution 2 (Symmetry)
• curprev 22:3122:31, 2 October 2019 Bjhhar talk contribs 5,205 bytes +1,468 No edit summary

1 August 2019

• curprev 01:5001:50, 1 August 2019 Gamemaster402 talk contribs 3,737 bytes +49 →Solution

24 February 2019

• curprev 22:4622:46, 24 February 2019 Vedadehhc talk contribs m 3,688 bytes +1 →Solution
• curprev 22:4622:46, 24 February 2019 Vedadehhc talk contribs 3,687 bytes −373 →Solution 1

23 February 2019

• curprev 20:0120:01, 23 February 2019 Duoquinquagintillion talk contribs m 4,060 bytes −29 →Solution 1: Removed graffiti

22 February 2019

• curprev 18:4718:47, 22 February 2019 Snorelaxrules talk contribs 4,089 bytes +31 →Solution 1

18 February 2019

• curprev 23:0123:01, 18 February 2019 Sevenoptimus talk contribs 4,058 bytes +21 Improved clarity

17 February 2019

• curprev 22:4322:43, 17 February 2019 Sevenoptimus talk contribs 4,037 bytes +417 Improved clarity and formatting, and removed irrelevant attribution
• curprev 17:1817:18, 17 February 2019 Iyn talk contribs m 3,620 bytes +9 Undo revision 102924 by Xmidnightfirex (talk) Tag: Undo
• curprev 03:3103:31, 17 February 2019 LauraZed talk contribs m 3,611 bytes −10 Reverted edits by Bgav (talk) to last revision by Xmidnightfirex Tag: Rollback

15 February 2019

• curprev 16:0716:07, 15 February 2019 Bgav talk contribs 3,621 bytes +10 No edit summary
• curprev 11:2411:24, 15 February 2019 Xmidnightfirex talk contribs 3,611 bytes −19 →Solution
• curprev 09:1509:15, 15 February 2019 Dottedcaculator talk contribs 3,630 bytes −52 →Solution

14 February 2019

• curprev 23:2523:25, 14 February 2019 Iyn talk contribs 3,682 bytes −3,071 see talk page