Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Adults love Sudoku because it represents their 'alone time.' You see, you can’t play Sudoku when you’re with a crowd. You also can’t play Sudoku when you’re in a pub. You need to have a quiet place to focus and come up with a working strategy that you can use. So, how about a Sudoku?