Rules:
Place numbers in the grid such that every row, column and 3x3 box contain the numbers 1 to 9.
The even digits outside the grid indicate which is the first even digit
appearing in the corresponding row/column and direction, the odd digits outside the grid
indicate which is the first odd digit appearing in the corresponding row/column and direction.
I due numeri esterni (uno dispari ed uno pari) indicano qual'è il primo numero pari o dispari che si incontra nella riga/colonna da quella direzione..
