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- \$\begingroup\$ Related. \$\endgroup\$Dom Hastings– Dom Hastings2018-02-28 20:14:52 +00:00Commented Feb 28, 2018 at 20:14
- 1\$\begingroup\$ Somewhat related. \$\endgroup\$Martin Ender– Martin Ender2018-02-28 20:17:34 +00:00Commented Feb 28, 2018 at 20:17
- 1\$\begingroup\$ @dylnan No, the other one doesn't ask for a mutual quine. \$\endgroup\$Martin Ender– Martin Ender2018-02-28 20:57:34 +00:00Commented Feb 28, 2018 at 20:57
- 1\$\begingroup\$ Having seen the answers so far I think the real challenge would be the anticlockwise one or a quine with more than one lines (so that rotation is different from transposition or simply inserting newlines). \$\endgroup\$Weijun Zhou– Weijun Zhou2018-02-28 21:30:02 +00:00Commented Feb 28, 2018 at 21:30
- 1\$\begingroup\$ You might want to require the two programs to be different. Otherwise, quines which happen to have rotational symmetry would be valid answers. \$\endgroup\$Martin Ender– Martin Ender2018-02-28 21:41:04 +00:00Commented Feb 28, 2018 at 21:41
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