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Minimum number of queens required so that every square grid on chess board is under the attack of a queen?

+2 votes
2,421 views

Imagine there are infinite number of Queens (Chess Game Piece) with u. Find the minimum number of queens required so that every square grid on the chess board is under the attack of a queen. Arrange this minimum no. of Queens on a chess board.

posted May 20, 2014 by Santosh Prasad

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3 Answers

+2 votes

it requires much deep thinking then i was able to come up with two more solution that requires 5 queens & i think that are minimum number of queens we are looking for ...

1st (1,1) (3,4) (3,6) (4,2) (5,5)
2nd (0,0) (1,7) (2,4) (4,0), (7,6)

Queen Needed 5

answer May 23, 2014 by Satish Kumar Vadlavalli
+1 vote

minimum no is 5 enter image description here

answer Oct 3, 2016 by Pk Jinjawadiya
–1 vote

Eight queens.

answer Aug 27, 2015 by Ramana V Sista



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