Book code access
Open a companion puzzle from an eligible print edition
Use this route only when a printed book explicitly says it includes online play and gives you a 12-character code. The current legacy paperback shelf is still print-only unless a newer marked edition says otherwise.
Newer marked editions only Legacy paperbacks stay print-only
Enter a companion code
Only enter codes printed inside books that explicitly advertise companion online play. If your paperback does not mention a code, it belongs to the print-only shelf instead.
Current shelf
Buying one of the live paperbacks?
The paperback shelf shows the currently published legacy books. Those editions do not include companion digital routes unless the book itself clearly says it does.
Need the solving guide first?
Learn how to solve logic grid puzzles before you open the board.
The how-to-play guide covers clue reading, board propagation, and the clue families used across the public puzzle surface.