@misc{indiciaec8a77dba0f25,
  title = {The science behind Sudoku.},
  author = {Jean-Paul Delahaye},
  year = {2006},
  doi = {10.1038/scientificamerican0606-80},
  url = {https://pubmed.ncbi.nlm.nih.gov/16711364/},
  note = {Source identifier: 16711364}
}