Kindly provide a new working link for sudoku data, since the [provided](https://github.com/locuslab/qpth/blob/master/example-sudoku.ipynb) [link](http://joule.isr.cs.cmu.edu:11235/optnet/arxiv.v1.sudoku.tgz) can't be accessed
Kindly provide a new working link for sudoku data, since the provided link can't be accessed