Aim of Crossnumbers:
Fill each square with a number from 1 to 9 so all rows, columns and diagonals add up to the specified values. Columns should add up to values at the top of the grid. Rows should total the values at the left of the grid. Diagonal squares should add up to the totals in the top and bottom left.
How to play Crossnumbers:
There are two ways you can specify values for a square in the puzzle grid:

1. Position the mouse pointer over the square you want to set. Click the left mouse button. From the popup window you can select the value - or a number of possible values - for the square.
2. Position the mouse pointer over the square you want to set. Press the appropriate key on your keyboard for the value you want to set the square to.

Puzzles like Crossnumbers:
If you like Crossnumbers you might enjoy Kakuro and Setsquare or any of our other arithmetic puzzles.