Each number in the grid represents a letter from A to Z. When deciphered, the puzzle should resemble a completed crossword grid.

Each new puzzle is available to play online for seven days from its date of release. When playing:

Click on Help for guidance on playing the puzzle online, including how to use the Reveal/Verify functions.
Press Reset to empty the grid of all placed letters except for those that have been revealed/verified.
Use Save to store an incomplete puzzle.
Press Submit when the puzzle is complete to find out whether or not you successfully cracked the code.