4 November 2025

• curprev 12:2912:29, 4 November 2025 Math-lover1 talk contribs 5,147 bytes −9 →Solution 1.1
• curprev 12:2812:28, 4 November 2025 Math-lover1 talk contribs 5,156 bytes +4 →Solution 1.1
• curprev 12:2812:28, 4 November 2025 Math-lover1 talk contribs 5,152 bytes −2 →Solution 1.1
• curprev 12:2712:27, 4 November 2025 Math-lover1 talk contribs 5,154 bytes +813 →Solution 1

19 March 2023

• curprev 19:4519:45, 19 March 2023 South talk contribs 4,341 bytes −18 →Solution 5
• curprev 19:4419:44, 19 March 2023 South talk contribs 4,359 bytes +18 →Solution 4
• curprev 19:3619:36, 19 March 2023 South talk contribs 4,341 bytes −2 →Solution 3

10 July 2022

• curprev 10:3610:36, 10 July 2022 Nezha33 talk contribs 4,343 bytes 0 →Solution 2

11 September 2021

• curprev 09:3109:31, 11 September 2021 Jesselan talk contribs 4,343 bytes 0 →Solution 1
• curprev 09:2909:29, 11 September 2021 Jesselan talk contribs 4,343 bytes 0 →Solution 1

29 July 2021

• curprev 16:1816:18, 29 July 2021 Bakedpotato66 talk contribs m 4,343 bytes +135 →Solution 4

27 December 2020

• curprev 09:5009:50, 27 December 2020 Dragonwarrior20 talk contribs 4,208 bytes −3 →See Also...

8 November 2020

• curprev 13:3013:30, 8 November 2020 Yukiric talk contribs 4,211 bytes +3 →See Also

22 August 2020

• curprev 20:5320:53, 22 August 2020 Jbala talk contribs 4,208 bytes +43 No edit summary

3 January 2020

• curprev 22:4222:42, 3 January 2020 Therealchocolatelover talk contribs m 4,165 bytes −1 →Solution 2

29 December 2019

• curprev 19:2419:24, 29 December 2019 Jerry122805 talk contribs 4,166 bytes −16 →See Also
• curprev 19:2419:24, 29 December 2019 Jerry122805 talk contribs 4,182 bytes +92 →Solution 4

6 December 2019

• curprev 20:4420:44, 6 December 2019 A.y.711 talk contribs m 4,090 bytes +1 →Solution 2

20 August 2019

• curprev 18:1918:19, 20 August 2019 Nafer talk contribs 4,089 bytes +1 →Solution 4

6 August 2019

• curprev 11:2411:24, 6 August 2019 Nafer talk contribs 4,088 bytes +5 →Solution 4
• curprev 11:2211:22, 6 August 2019 Nafer talk contribs 4,083 bytes −50 →Solution 4
• curprev 11:2111:21, 6 August 2019 Nafer talk contribs 4,133 bytes +9 →Solution 4
• curprev 11:2111:21, 6 August 2019 Nafer talk contribs 4,124 bytes +34 →Solution 4
• curprev 11:2011:20, 6 August 2019 Nafer talk contribs 4,090 bytes +34 →Solution 4
• curprev 11:1911:19, 6 August 2019 Nafer talk contribs 4,056 bytes +520 →Solution 4
• curprev 10:5610:56, 6 August 2019 Nafer talk contribs 3,536 bytes +266 →Solution 4
• curprev 10:5110:51, 6 August 2019 Nafer talk contribs 3,270 bytes +18 →Solution 3

26 December 2018

• curprev 21:1621:16, 26 December 2018 Asdf334 talk contribs 3,252 bytes −76 →See Also
• curprev 21:1521:15, 26 December 2018 Asdf334 talk contribs 3,328 bytes −64 →Solution 3

22 December 2018

• curprev 16:5816:58, 22 December 2018 Made in 2016 talk contribs m 3,392 bytes +24 minor grammar change
• curprev 16:5716:57, 22 December 2018 Made in 2016 talk contribs m 3,368 bytes +7 minor formatting change
• curprev 04:2304:23, 22 December 2018 Yongyi781 talk contribs m 3,361 bytes +8 →Solution 1
• curprev 04:2204:22, 22 December 2018 Yongyi781 talk contribs m 3,353 bytes +21 →Solution 1
• curprev 04:2104:21, 22 December 2018 Yongyi781 talk contribs m 3,332 bytes 0 →Solution 1
• curprev 04:2104:21, 22 December 2018 Yongyi781 talk contribs m 3,332 bytes +36 →Solution 1
• curprev 04:1904:19, 22 December 2018 Yongyi781 talk contribs 3,296 bytes +690 No edit summary

26 June 2018

• curprev 01:3001:30, 26 June 2018 Novus677 talk contribs 2,606 bytes +651 →Solution

27 November 2016

• curprev 15:5315:53, 27 November 2016 Littleeuler101 talk contribs m 1,955 bytes 0 →Solution

15 February 2016

• curprev 21:4121:41, 15 February 2016 Tehetrollr289 talk contribs m 1,955 bytes +2 →Solution
• curprev 21:4021:40, 15 February 2016 Tehetrollr289 talk contribs m 1,953 bytes +11 →Solution
• curprev 21:3921:39, 15 February 2016 Tehetrollr289 talk contribs m 1,942 bytes −2 →Solution
• curprev 21:3921:39, 15 February 2016 Tehetrollr289 talk contribs m 1,944 bytes +7 →Solution
• curprev 21:3821:38, 15 February 2016 Tehetrollr289 talk contribs m 1,937 bytes +6 →Solution

31 January 2016

• curprev 14:5114:51, 31 January 2016 Peggy talk contribs 1,931 bytes +832 →Solution
• curprev 14:2814:28, 31 January 2016 Peggy talk contribs m 1,099 bytes +43 →Solution
• curprev 14:2414:24, 31 January 2016 Peggy talk contribs m 1,056 bytes +61 →Solution
• curprev 14:2214:22, 31 January 2016 Peggy talk contribs m 995 bytes +19 →Solution

22 July 2013

• curprev 11:2911:29, 22 July 2013 Gkhsieh talk contribs 976 bytes +12 →Solution
• curprev 11:2811:28, 22 July 2013 Gkhsieh talk contribs 964 bytes +8 →Problem
• curprev 11:2711:27, 22 July 2013 Gkhsieh talk contribs 956 bytes +1 →Solution