N Queens Puzzle - Generalized Chess Challenge

Explore variations of the classic chess puzzle. Solve the challenge of N queens on boards of different sizes, from 4x4 to 15x15.

What is the N Queens Puzzle?

The N Queens Puzzle is the generalization of the eight queens puzzle. Place N queens on an NxN board so that no two queens can attack each other. Each board size presents unique challenges and requires specific optimization strategies.

Advanced Algorithms

Develop advanced algorithm skills, computational complexity analysis, and dynamic programming.

Optimization

Learn optimization techniques that work for all board sizes.

Scalability

Understand how difficulty increases exponentially with board size.

How to Solve the N Queens Puzzle

The backtracking algorithm adapts to any board size. For small boards (N≤8), basic backtracking is efficient. For large boards (N>10), advanced optimizations like branch pruning and parallel programming are required.

Solutions by Board Size

Each board size has a different number of solutions: 4x4 has 2 solutions, 6x6 has 4 solutions, 8x8 has 92 solutions, and larger boards have thousands of unique solutions.

View Solutions

Difficulty Scale

Difficulty increases exponentially with board size. Small boards are ideal for beginners, while large boards require advanced algorithms and significant computational resources.

Start Playing

Educational Value

Develops advanced algorithm skills, computational complexity analysis, and dynamic programming. Ideal for computer science students seeking to master optimization techniques.

Learn More

Generalized Solution

The backtracking algorithm adapts to any NxN board size. Learn the optimization techniques that work for all sizes.

Generalized solution for N Queens Puzzle

Generalized solution for N Queens Puzzle

Difficulty Progression

Explore how difficulty increases exponentially with board size. From the simple 4x4 to the complex 15x15, each size presents unique challenges and requires specific strategies.

Difficulty progression chart for different board sizes

Difficulty progression chart for different board sizes

Board Size Comparison

Compare complexity and number of solutions between different board sizes. From the simple 4x4 to the complex 15x15, each size offers unique challenges.

Explore All Variations

Discover different board sizes and difficulty levels of the queens puzzle.

8 Queen Puzzle

The classic 8 queens puzzle with all 92 solutions.

Explore

N Queens Puzzle

Generalized variations of the N queens puzzle.

Explore

Complete Solutions

Complete database of solutions for all board sizes.

Explore

4 Queens - Beginner

Perfect for beginners with only 2 solutions.

Play 4x4

6 Queens - Advanced

Advanced level requiring complex strategies.

Play 6x6

15 Queens - Master

The most complex challenge with thousands of solutions.

Play 15x15