Interesting math puzzles! I enjoyed reasoning through these puzzles.

I was wondering what the the red numbers are, and I think I figured it out. It's the number of zeroes in the row/column.

It would be nice if you included that in the game's rules and explain it up front. That way, people won't be wondering what it means.

You eventually do figure it out, but it's a little confusing at first.

Perhaps this is bias speaking, because I do enjoy picross, minesweeper, and the like
But this definitely emulates those kinds of games well and I found myself having a lot of fun with this entry!

One thing I noticed is that sometimes solutions would generate in the 0 columns, so if I selected everything in those columns, I would just win automatically. It's not a big deal but you could remove that so players have to think a bit more! Though getting lucky is fun in it's own way... hehe.

Congrats on submitting your first jam entry! Here's hoping things went well and there'll be more to come :)