Crossnum

Crossnum is a daily number crossword where your mission is to fill a grid of empty cells so every row and column equation works out correctly.

Each puzzle gives you a small grid with some numbers already in place and operators connecting them. Your job is to figure out what belongs in the blanks using nothing but logic. There is always exactly one solution, so no guessing is required, just careful deduction.

• Fill empty cells so the equation in each row and column is true.
• The range of numbers you are allowed to use is shown above the board.
• Numbers you multiply and any divisors cannot exceed 12.
• Every calculation step must result in a whole number, zero or above. No fractions and no negatives allowed.
• A new puzzle drops daily, starting easy and getting harder as the week goes on.

Why we like it:

• ✅Pure logic puzzle with a guaranteed single solution, so no lucky guessing gets you through.
• ✅Quick to play but satisfying to crack.
• ✅The difficulty ramp across the week keeps it fresh for both beginners and math nerds.

Hint: Start with the row or column that has the fewest blanks. Locking in one number often cascades through the rest of the grid, since every cell belongs to both a row equation and a column equation.