'sudoku Dificil'
'569243178'
'372819654'
'814765329'
'298637541'
'135428967'
'746591832'
'683972415'
'457186293'
'921354786'
'sudoku 2 Dificil'
'685132497'
'734598126'
'219764583'
'926871354'
'851349762'
'473256819'
'568427931'
'197683245'
'342915678'
'sudoku 3 Dificil'
'315984672'
'496257831'
'278613549'
'537196284'
'182745396'
'964832157'
'743561928'
'851429763'
'629378415'
'sudoku 4 Dificil'
'364728915'
'851934276'
'729561438'
'218345697'
'673289154'
'495176823'
'542813769'
'136497582'
'987652341'

