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Challenge: Box Blackoutby Limbic~Region (Chancellor) 
on Jan 23, 2006 at 23:04 UTC ( #525077=perlquestion: print w/replies, xml )  Need Help?? 
Limbic~Region has asked for the wisdom of the Perl Monks concerning the following question:
All,
Imagine that you have a N x N square and the object of the game is to black out the entire board in only 1 turn. The board starts out in an initial configuration with some pieces already on the board. Every time a row, column, or diagnol has N  1 pieces in it you are allowed to place a piece in the empty position. Your turn is over when the board is blacked out or there are no more rows, columns, or diagnols that have N  1 pieces in them. Here is an example of a 3 x 3 grid The object of the game is to find the optimal starting position for any size board where the number of starting pieces is minimized but the board can be covered in only 1 turn. While a 3 x 3 is trivial, I am really hoping to solve it for a 10 x 10. I hope I have explained the idea well enough but if you have questions, please let me know. All solutions welcome to include brute force, golfed, and obfu. Cheers  L~R
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