Implement Board.hasRowConflictAt()
implement Board.hasAnyRowConflicts()
implement Board.hasColConflictAt()
Implement Board.hasAnyColConflicts()
implement Board.hasMajorDiagonalConflictAt()
implement remaining helper methods
fix countNRooksSolutions()
implement findNRooksSolution()
implement findNQueensSolution()
solvers
 Merge branch 'master' of https://github.com/sekunovsky/2013-06-n-queens