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$\begingroup$ You missed Malta, but that can be fixed by adjusting one line to match that used in the other solutions (though I don't think that line really works). $\endgroup$Jaap Scherphuis– Jaap Scherphuis2025-06-20 18:11:14 +00:00Commented Jun 20, 2025 at 18:11
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1$\begingroup$ +1 for the solution. You can fix the Malta issue by adjusting the line through Portugal and Spain to cross it $\endgroup$Wilhelm Laibach– Wilhelm Laibach2025-06-20 20:04:52 +00:00Commented Jun 20, 2025 at 20:04
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2$\begingroup$ @WilhelmLaibach not without sacrificing Andorra. $\endgroup$user111403– user1114032025-06-20 21:02:59 +00:00Commented Jun 20, 2025 at 21:02
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4$\begingroup$ I'm missing Liechtenstein? $\endgroup$Servaes– Servaes2025-06-20 23:36:27 +00:00Commented Jun 20, 2025 at 23:36
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1$\begingroup$ I've reviewed the comments and updated my answer to reflect that it is not correct. I will post a new answer if I'm able to find a valid solution with either eight lines or with nine lines but no fudging on San Marino, Vatican, and Malta. $\endgroup$N. P.– N. P.2025-06-23 16:50:39 +00:00Commented Jun 23, 2025 at 16:50
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