Generate All N Queens Board Placements | Dataford Interview Questions

Hard level Data Structure question related to back-tracking.

Implement solve_n_queens(n) using backtracking. Return every distinct placement of n queens on an n x n chessboard so that no two queens share a row, column, or diagonal. Represent each board as a list of strings using Q for a queen and . for an empty square. Return an empty list when no placement exists.

Constraints

1 <= n <= 9
Return every distinct valid board
Each board must contain exactly n rows of length n
Use only Q and . in the board representation

Function Signature

def solve_n_queens(n):

Your question is Generate All N Queens Board Placements. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Hard level Data Structure question related to back-tracking.

Constraints

1 <= n <= 9
Return every distinct valid board
Each board must contain exactly n rows of length n
Use only Q and . in the board representation

Function Signature

def solve_n_queens(n):

Your question is Generate All N Queens Board Placements. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.