Antihydra in Magic: The Gathering Updated +Created
It is known that Magic: The Gathering is Turing complete, but it is cool to have a concrete specific example of an open problem in mathematics coded in it.
Figure 1.
Screenshot of the Antihydra in Magic: The Gathering construction
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Conjecture Updated +Created
A conjecture is an open problem in mathematics for which some famous dude gave heuristic arguments which indicate if the theorem is true or false.