Domino  Puzzles
1) Contents
This is the 7th issue of DOMINO PUZZLES.
2) Dominosa
This issue contains 1 new dominosa, and hopefully the first one in an alphabet series. In a dominosa, you have the layout of a full double 6 domino set. The only thing you have to figure out are the borders between the tiles.

1 
3 
3 
1 
1 
5 
0 
2 
2 
1 
0 
3 
3 
4 
2 
0 
4 
4 



3 
3 
4 
4 
2 



3 
6 
2 
0 
6 





2 
1 
5 





6 
6 
3 



4 
4 
1 
0 
6 



0 
5 
2 
0 
5 
6 
0 
5 
1 
5 

6 
1 
5 
2 
5 
4 
6 
3) Classic puzzle  magic square 1
Around the turn of the 19th/20th century, Sam Loydd was the most famous puzzler in the USA, but in his entire cylopedia i discovered only one domino puzzle, more about that in another issue. Henry Dudeney lived in roughly the same period, and included a separate chapter on domino puzzles in his Amusements in mathematics. And even outside this chapter i found a puzzle on dominoes.
In the table below the som of the dots on the first row is 13. Complete the other 5 rows with the tiles from a double 6 pack in such a way that the sum of all rows, columns and the two diagonals is 13.
4) Classic puzzle  magic square 2
Henry Ernest Dudeney gives the solution the problem above in his book as an example. His real challenge was: make a square of 6x6 such that the sum of all rows, columns and the two main diagonals is 18. En passant he natoes that 23 is also possible.
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