CEED 2018

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CEED2018Q8·nat·Hard56 attempts

As shown in Figure 1, in chess, a knight moves 2 squares in one direction and one square at right angle to that direction. Figure 2 shows 15 pawns on the chess board. What is the minimum number of moves that the knight needs to capture all the pawns?

Keyboards off — use the numpad, just like on exam day.