Multiple choice general knowledge sports

There are 20 ways for white to begin a game of chess. After black responds to white's first move, the number of unique positions on the chessboard equals:

  1. 24

  2. 20

  3. 1024

  4. 400
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D Correct answer
Explanation

In chess, White has 20 possible first moves (16 pawn moves + 4 knight moves). If Black responds to each of these with 20 possible moves, the total number of unique positions after both sides have moved once is 20 × 20 = 400. This is a straightforward multiplication problem.

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