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the game of crossed numbers
Instructions: to resolve the game you have to put the numbers required in the grid. You have three hints: the sum of each row is on the right, the sum of each column is on the bottom and you also have the sum of the diagonal.
  Confucius is born (b.C.)  
  Shakespeare is born  
  Stravinsky dies  
  Diameter of Titan, moon of Jupiter (in Km)  
The number in diagonal answers next question:
Muhammad is born

Change the value of the cells clicking on them.
Push next button when you think the grid is solved is a creation of David Puertas and Bernat Puertas. Illustrations: Laura Borrās