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3 replies to this topic

#1 Larry11

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Posted 04 February 2008 - 03:18 AM

2 puzzles

1. You have four columns and four rows. You can only use numbers 1 through 16. Using these numbers only once each, each column, each row and diagonal must equal 34.

2. You have five colums and five rows. You can only use numbers 1 through 25 once each and each column, row and diagonal must equal 65.
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#2 brhan

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Posted 04 February 2008 - 01:09 PM

1. You have four columns and four rows. You can only use numbers 1 through 16. Using these numbers only once each, each column, each row and diagonal must equal 34.


7 2 16 9
3 12 6 13
10 5 11 8
14 15 1 4
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#3 bonanova

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Posted 04 February 2008 - 09:03 PM

2. You have five colums and five rows. You can only use numbers 1 through 25 once each and each column, row and diagonal must equal 65.

Spoiler for here's one

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The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

#4 Writersblock

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Posted 04 February 2008 - 10:34 PM

I have a formula saved somewhere that lets you build magic squares like this to the Nth.

The highest I've actually built was 11 x11. Anyone wanna tackle 12 x 12? (so you'd use the numbers 1 - 144 and all columns and rows are equal sums.) B))
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