shapes in chessboard
Logic
Level
2
Find out the minimum moves for accomplishing the above position in a chessboard.
The answer is 20.
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1 solution
We have to move each of the 16 pawns forward, so that gives us 16 moves. On its first move, a pawn can move 1 or 2 spaces ahead. Therefore, we must add an extra 1 for every pawn that is 3 spaces from its original place. Since there are four pawns in that position, 1 6 + 4 = 2 0 .