6.1 N Queens Problem using Backtracking

N-Queens problem
state space tree

PATREON : www.patreon.com/bePatron?u=20475192

Courses on Udemy
================
Java Programming
www.udemy.com/course/java-se-programming/?referral…

Data Structures using C and C++
www.udemy.com/course/datastructurescncpp/?referral…

C++ Programming
www.udemy.com/course/cpp-deep-dive/?referralCode=E…