2012-10-19, 03:42 AM
Stereo Wrote:You can't have 5 in a row, 5 in a column, and 5 in a diagonal without them overlapping in 3 spots - where the row & diagonal meet, where the row & column meet, and where the column & diagonal meet. If you make the 3 overlaps in different places, it's 3 pieces for 6 parts of the solution (and thus cuts 15 to 12) - if you make the 3 overlaps in the same place, it's 1 piece for 3 parts of the solution (and thus cuts 15 to 13).
Just by putting 5 into a row, you've completed 1 of any possible column and either diagonal.
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There's no column on this board that doesn't overlap, you need 4 pieces to complete any column.
Is there a rule that says you can't have 3 horizontal rows?