Solution of n-Queen problem using ACO

In this paper, a solution is proposed for n-Queen problem based on ACO (ant colony optimization). The n-Queen problem become intractable for large values of `n' and thus placed in NP (non-deterministic polynomial) class problem. The n-Queen problem is basically a generalized form of 8-Queen problem. In 8-Queen problem, the goal is to place 8 queens such that no queen can kill the other using standard chess queen moves. So, in this paper, the proposed solution will be applied to 8-Queen problem. The solution can very easily be extended to the generalized form of the problem for large values of `n'. The paper contains the detail discussion of problem background, problem complexity, ant colony optimization (swarm intelligence) and a fair amount of experimental graphs.