Parece que está utilizando un bloqueador de anuncios. Esta bien. Quien no ? / It looks like you are using an ad blocker. It's okay. Who does not ?
Pero sin ingresos publicitarios, no podemos seguir haciendo que este sitio sea increíble./ But without ad revenue, we can't keep making this site awesome.
Por favor desactiva el bloqueador. / Please disable the blocker
Every day a new Sudoku in 4 difficulty levels. Also with an archive of several months. Solve according to the sudoku rules: a number (from 1-9) can only be used once in every row, column or 3x3 box.
