Reference :
- N-Queen problem
http://en.wikipedia.org/wiki/Eight_queens_puzzle - Constraint Programming
https://msdn.microsoft.com/en-us/devlabs/hh145003 - Constraint Programming – Sample Color Mapping
https://msdn.microsoft.com/en-us/library/ff826354(v=vs.93).aspx - Constraint Programming – Constraints on Type Parameters
https://msdn.microsoft.com/en-us/library/d5x73970.aspx
