Henry Ernest Dudeney/Modern Puzzles/177 - The Six-Pointed Star

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Modern Puzzles by Henry Ernest Dudeney: $177$

The Six-Pointed Star
We have considered the question of the five-pointed star.
We shall now find the six-pointed star even more interesting.
In this case we can always use the twelve consecutive numbers $1$ to $12$ and the sum of the four numbers in every line will always be $26$.
The numbers at the six points of the star may add up to any even number from $24$ to $54$ inclusive, except $28$ and $50$, which are impossible.
It will be seen in the example that the six points add up to $24$.
Dudeney-Modern-Puzzles-177.png
If for every number in its present position you substitute its difference from $13$ you will get another solution, its complementary,
with the points adding up to $54$, which is $78$ less $24$.
The two complementary totals will always sum to $78$.
I will give the total number of different solutions and point out some of the pretty laws which govern the problem,
but I will leave the reader this puzzle to solve.
There are six arrangements, and six only, in which all the lines of four and the six points also add up to $26$.
Can you find one or all of them?


Click here for solution

Sources