Answer keys
Every puzzle comes with its answer key
Every printable on this site includes an answer key on page two of the PDF — no separate download, no email, no paywall. The key is generated from the exact same seed as the puzzle, so it always matches. Here is how that works and how to use the keys in a classroom.
Puzzle and key, side by side
The same maze, generated from one seed. The answer key draws the single solution path in red from the green start to the red finish.
How the answer keys are made
Each puzzle is generated from a seed — a short code that fully determines the puzzle. The answer key is produced by running the same seed again and overlaying the solution, so the two can never disagree. For a maze the key is the one true path; for a dot-to-dot it is the connected picture; for a hidden picture it rings every hidden object; for a word search it circles every placed word.
Why a perfect maze has exactly one answer
Our easy and medium mazes are perfect mazes: a spanning tree with no loops, which mathematically guarantees exactly one path between the start and the end. That is why the answer key is a single clean line, and why two children solving the same maze will both arrive at the same route. Braided and harder mazes may have alternate routes, and the key shows the shortest.
Using answer keys in the classroom
Print the puzzles and keys together (they are the same PDF), then keep the keys at the front for self- or peer-marking. Because the seed of each puzzle is printed in its footer, you can reprint a lost key exactly, or set the same puzzle to two classes and mark them against one key. Bundles lay each puzzle next to its key for easy double-sided printing.
Find puzzles with answer keys
Frequently asked questions
Do all puzzles include an answer key?
Yes — every maze, dot-to-dot, hidden picture and word search includes its answer key on page two of the same PDF, free.
How do I know the key matches the puzzle?
Both are generated from the same seed, so they always correspond. The seed is printed in the footer of each page.
Can I print just the answer key?
Yes — print page two of the PDF on its own, or print the whole PDF double-sided so each puzzle backs onto its key.
Do generated puzzles get answer keys too?
Yes. The maze, dot-to-dot and word-search generators all download a two-page PDF: the puzzle and its answer key.