Okay, so let's say you have a big piece of paper and a bunch of smaller pieces that can fit on it. Your job is to make sure the entire big piece of paper is covered by the smaller pieces so that there are no gaps, or holes, where you can still see the big piece of paper. That's called a covering problem!
It's kind of like putting together a puzzle, but instead of matching colors or shapes, you're trying to fill up the entire space without leaving any empty spaces. This can be a really hard problem to solve because you need to figure out the best way to use the smaller pieces to cover up the big space.
One way to think about it is like playing Tetris. You want to fit the smaller pieces together in the best way possible so that they don't leave any gaps. You might have to rotate or flip the smaller pieces to make them fit just right.
Covering problems can also come up in real life situations. For example, if you're trying to cover your backyard with grass seeds, you need to figure out the best way to spread them out so that you don't leave any bare spots where the ground shows through. Or if you're trying to lay tiles on a bathroom floor, you need to make sure that the tiles cover the entire floor without leaving any spaces in between.
So that's what a covering problem is all about - making sure that all the space is covered up neatly and completely.