This was really well made. The look and feel were among the best in the jam, and I love that there was an undo button. A reset button would have been a nice shortcut to add, but I just held down backspace and that served me well. As other commenters have said, the puzzle design leans a little fidgety, but I didn't mind that. Nice work!
P.S. I made a super similar game! I've seen a few like ours so far and it's always neat to see the little nuances in design express themselves in the finished product.