Practice Attack Representation Strategy (32.1.1) - Backtracking, N queens - Part B
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Attack Representation Strategy

Practice - Attack Representation Strategy

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is represented by the attack array in the context of the N-Queens problem?

💡 Hint: Think about the movements of the queen piece in chess.

Question 2 Easy

How can we reduce the space complexity from N squared to linear?

💡 Hint: Consider which pieces of information are essential.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main challenge when representing the attacks of queens on a chessboard?

To track the number of queens
To keep the representation space efficient
To visualize the board

💡 Hint: Consider how large an N squared representation would be compared to a linear one.

Question 2

True or False: In the attack representation strategy, every square's attack status is stored in an N squared array.

True
False

💡 Hint: Reflect on the methods discussed in reducing the attack representation.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Write a Python function to count all unique solutions to the N-Queens problem using the representation strategy discussed.

💡 Hint: Consider modifying the placement function to count instead of just finding one solution.

Challenge 2 Hard

Design a test case for a 6x6 chessboard and validate the attack representation before placing each queen.

💡 Hint: Use the understanding of attack representation for validation.

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Reference links

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