30 August 2025

• curprev 23:5823:58, 30 August 2025 Odeiocombinatoria talk contribs 11,038 bytes +6 →Solution 3
• curprev 23:5623:56, 30 August 2025 Odeiocombinatoria talk contribs 11,032 bytes −1 →Solution 3

26 July 2023

• curprev 11:2611:26, 26 July 2023 Bennetthuang talk contribs 11,033 bytes +1 →Solution 3
• curprev 11:2011:20, 26 July 2023 Bennetthuang talk contribs 11,032 bytes +3 →Solution 3
• curprev 11:1911:19, 26 July 2023 Bennetthuang talk contribs 11,029 bytes +15 →Solution 3
• curprev 11:1911:19, 26 July 2023 Bennetthuang talk contribs 11,014 bytes +1,151 →Solution 2

2 May 2023

• curprev 10:5710:57, 2 May 2023 Nedsanger talk contribs m 9,863 bytes +3 →Solution 2
• curprev 08:0008:00, 2 May 2023 Nedsanger talk contribs m 9,860 bytes −6 →Solution 2
• curprev 07:4007:40, 2 May 2023 Nedsanger talk contribs 9,866 bytes +6 →Solution 2
• curprev 07:2707:27, 2 May 2023 Nedsanger talk contribs 9,860 bytes +2,376 →Added a new solution.

30 January 2021

• curprev 11:0511:05, 30 January 2021 Hamstpan38825 talk contribs 7,484 bytes +62 No edit summary
• curprev 11:0411:04, 30 January 2021 Hamstpan38825 talk contribs 7,422 bytes +66 No edit summary

7 February 2016

• curprev 17:5217:52, 7 February 2016 Aops777 talk contribs m 7,356 bytes +13 No edit summary

11 December 2009

• curprev 03:1303:13, 11 December 2009 Kono talk contribs 7,343 bytes +7,343 Created page with 'Problem: A permutation <math>\{x_1, \ldots, x_{2n}\} of the set \{1,2, \ldots, 2n\}</math> where <math>\mbox{n}</math> is a positive integer, is said to have property <math>T</m…'