Examples where backtracking can be used to solve puzzles or problems include: Puzzles such as eight queens puzzle, crosswords, verbal arithmetic, Sudoku, and Peg Solitaire. Combinatorial optimization problems such as parsing and the knapsack problem.

What is backtracking algorithm with example?

For example, following is the output matrix for the above 4 queen solution. Backtracking Algorithm: The idea is to place queens one by one in different columns, starting from the leftmost column. When we place a queen in a column, we check for clashes with already placed queens.

Which type of algorithm is backtracking?

Types of backtracking algorithms. There are two types of backtracking algorithms: Recursive backtracking algorithm. Non - recursive backtracking algorithm.