@article{patternbasedconstraintsatisfactionand,
  title = {Pattern-Based Constraint Satisfaction and Logic Puzzles},
  author = {Denis Berthier},
  year = {2013},
  eprint = {1304.1628},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1304.1628v1},
}