4-rings or 4-squares puzzle: Revision history

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2 September 2020

31 August 2020

21 March 2020

13 March 2020

5 January 2020

11 November 2019

26 October 2019

24 August 2019

17 July 2019

25 June 2019

18 June 2019

4 June 2019

13 May 2019

12 May 2019

3 May 2019

6 March 2019

5 January 2019

31 December 2018

28 December 2018

1 December 2018

30 November 2018

8 November 2018

18 October 2018

6 September 2018

8 July 2018

7 July 2018

22 June 2018

25 May 2018

1 April 2018

28 February 2018

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