I took my riding mower for a spin around the yard this spring. I stopped and engaged the mower blades. When I went to move forward and pull it into the garage it wouldn't move. It won't go forward or reverse, just stuck. My model is 13A0665G302 and it is serial #1E057C30019. Any ideas?

What's the drive belt look like?

After having this issue I replaced all belts. Still doesn't want to move. Was hoping it was just something needing adjusted but am concerned it might be the clutch or transmission.