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SMO 2011 Junior Round 1 Question 9

SMO · SMO 2011 Junior Round 1

Question 9

How many ways can you place a White Knight and a Black Knight on an $8\times8$ chessboard such that they do not attack each other?

Question illustration
  1. $1680$
  2. $1712$
  3. $3696$
  4. $3760$
  5. None of the above.