What will you fill in for #?

Source

Solution

Black filled star.

Each row and column has to contain each kind of pentagram.

Also: I think it is the diagonals? Similar to determinant rule application.

  • neidu3@sh.itjust.works
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    4 days ago

    There are multiple potential ways of solving this, and I concluded early on that “nah, it can’t be that simple”. So I went through the ones I could think of just after waking up at the crack of noon.
    Row sequence.
    Column sequence.
    Diagonal sequence (with wrapping).
    They all came down to a simple XOR, so Black Star.