5 Queens Attack

Logic Level 4

What is the most number of pawns that we can place on a 5 by 5 chessboard, so that we can also place 5 queens which are unable to attack the pawns?

0 1 2 3 4

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1 solution

Chung Kevin
Jun 9, 2016

3 can be done. I don't think 4 can be done.

How can it be done with 3?

Josh Banister - 4 years, 12 months ago

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I showed it in my solution.

Chung Kevin - 4 years, 11 months ago

Another solution can be with four queens on the corner and the fifth one at (2,4)

Aniket Bangroo - 4 years, 12 months ago

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Hm, I can only get 2 pawns in that way.

Chung Kevin - 4 years, 11 months ago

Could you prove that is impossible to place 4 pawns?

Santiago Hincapie - 4 years, 11 months ago

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