Which of the following statements is correct about n-queen problem?

2022

Answer: D. 6-queen problem has 4 solutions.

1. A.

   3-queen problem has 1 solution.

2. B.

   4-queen problem has 3 solutions.

3. C.

   5-queen problem has 2 solutions.

4. D.

   6-queen problem has 4 solutions.

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