Name	Name	Last commit message	Last commit date
parent directory ..
README.md	README.md
__init__.py	__init__.py
all_combinations.py	all_combinations.py
all_permutations.py	all_permutations.py
all_subsequences.py	all_subsequences.py
coloring.py	coloring.py
combination_sum.py	combination_sum.py
crossword_puzzle_solver.py	crossword_puzzle_solver.py
generate_parentheses.py	generate_parentheses.py
hamiltonian_cycle.py	hamiltonian_cycle.py
knight_tour.py	knight_tour.py
match_word_pattern.py	match_word_pattern.py
minimax.py	minimax.py
n_queens.py	n_queens.py
n_queens_math.py	n_queens_math.py
power_sum.py	power_sum.py
rat_in_maze.py	rat_in_maze.py
sudoku.py	sudoku.py
sum_of_subsets.py	sum_of_subsets.py
word_break.py	word_break.py
word_ladder.py	word_ladder.py
word_search.py	word_search.py

README.md

Backtracking

Backtracking is a way to speed up the search process by removing candidates when they can't be the solution of a problem.