Start a Calcudoku game

Each cage is delimited by thick lines. Each cage contains a mathematical operator (+, -, ×, ÷) and a target result.

The objective is to fill each grid square with a number between 1 and the grid size (for example, between 1 and 7 for a 7x7 grid) so that the following rules are respected:

• Each number must appear only once in each line.
• Each number must appear only once in each column.
• The result of each cage must be obtained by performing the specified operation on the cage digits. Operations can be addition, subtraction, multiplication or division.