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Expected Checks on Four-by-Four Board

1925SpecialistCombinatoricsProbability

1st Annual Harvard-MIT November Tournament

Joe B. is frustrated with chess. He breaks the board, leaving a $4 \times 4$ board, and throws 3 black knights and 3 white kings at the board. Miraculously, they all land in distinct squares! What is the expected number of checks in the resulting position? (Note that a knight can administer multiple checks and a king can be checked by multiple knights.)
0 students attempted0% solvedRating 1925

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