the riddle of the 8 queens

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bardamu

Maybe everybody knows it, but I still find it interesting - The riddle of the 8 queens. The aim is putting eight chicks on the chessboard that none of them is able to capture each other. there are lots of solution, you can find them on the internet, but it is more exciting to find out on your own

Capanegro

I think it took me longer this time than it did as a ten year old playing 7th Guest

styxtwo

they made a game out of it:

http://www.geocities.com/jaapsch/puzzles/javascript/frustr8torj.htm

bastiaan

its just like sudoku

bardamu

wow

Nadia_

very interesting

lotuslucane

heres the eight queens I remember

http://www.egg2.com/games/8_queens.htm

jaronkovich

good one..WoW

WellRounded

This particular design may already be there... or be wrong... But I stumbled on this thread, and felt like doing it.

 

NOTE:

This is actually very easy for anyone who sees this as a task, just think first, there are 8 ranks and files, so obviously only one queen per file and one per rank.  After that, you can just place them where they are on a different diagnal.  But like cuendillar said, it's really easy with a fairly simple algorithm.

Sutibu

took me about 1 min :/

OMGdidIrealyjustsact

The key is Knight moves: Place the queens so if one was a knight it would defnd the other.