niveKenotS | Search | Random | New | Today
| Log In
When there is no choice (because the other numbers already appear in the row, column and block), a square is forced to be a particular number.
R5C2 can only be a <2>, as no other possibilities are allowed.
R1C4 can only be a <7>.
Design © Kevin Stone 2013 | About | Contact | Disclaimer | Links | Postcards | Privacy | RSS | Site Map | Use Material