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!!! abstract
Like explorers in a maze, we may encounter obstacles on our path forward.
We are like explorers in a maze, and may encounter difficulties on the path forward.
The power of backtracking lets us begin anew, keep trying, and eventually find the exit leading to the light.
The power of backtracking allows us to start over, keep trying, and eventually find the exit leading to light.
## Chapter contents
- [13.1   Backtracking algorithms](backtracking_algorithm.md)
- [13.2   Permutation problem](permutations_problem.md)
- [13.3   Subset sum problem](subset_sum_problem.md)
- [13.4   n queens problem](n_queens_problem.md)
- [13.1   Backtracking Algorithm](backtracking_algorithm.md)
- [13.2   Permutations Problem](permutations_problem.md)
- [13.3   Subset-Sum Problem](subset_sum_problem.md)
- [13.4   N-Queens Problem](n_queens_problem.md)
- [13.5   Summary](summary.md)