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Instructions for anniversary competition

To participate in the anniversary competitions, you have to register.

Where is the instruction booklet?!

For the anniversary competition, no instruction booklet will be published. The puzzles and sudokus that are part of the competition will remain a secret.

How to participate in the anniversary competition

You can start the competition by going to the Participate page. Before you start you can already download the puzzle booklet; this booklet is password protected. When you want to start, press the "Start" button. The competition lasts 4 hours (240 minutes); between Friday December 22, 12:00 (CET) and Monday December 31 23:59 (CET) you can choose the moment you want to participate. From the moment you press "Start", you have exactly 240 minutes to send your answers via the answer form. After you have pressed "Start", you will be automatically forwarded to the answer form page. At the top of this page you will find the password of the puzzle booklet. The puzzle booklet is in PDF format, so make sure you have installed a program with which you can open and print a PDF (for example Acrobat Reader).

How can you submit your answers?

No solutions submitted after the end of the competition will be accepted. For sending your answers, please use the prepared answering form. To submit your answers, you enter the solution codes of the puzzles you have solved, and press “Submit” at the bottom of the page. Your answers can be sent as many times as you need during the time limit. The form will remember your previous answers, so you don’t need to re-enter the solution codes for the puzzles you have already sent in. If you find out you sent a wrong answer, you can correct that answer and re-submit. Only the last sent solution will be taken into account (even if the last solution is wrong and the previous solution was correct). Send the answers as a row of numbers/letters without gaps, commas or any other signs. It is not possible to send the answers after the time limit termination. So make sure you send your final answers before the time expires. There will be a countdown timer on the answer form to help you with this.

For each puzzle you need to enter two rows in the answering form. The rows that you need to submit are indicated in the puzzle with an arrow. All answers need to be submitted from left to right! For sudokus this simply means entering the 9 digits for each indicated row. For puzzles, you need to enter a specific combination of digits or characters. What you need to fill in will be clearly indicated in the puzzle booklet. For examples of how entering answers for each puzzle type worked in other championships, refer to the instruction booklets of the qualification rounds of previous championships.

In the unexpected case that you experience an issue with the answering form during the sompetition, please make a screenshot of the answering form with your answers, including the computer time, and send this via email to WCPN (wcpn.pzzl@gmail.com).


WCPN is member of the World Puzzle Federation (WPF) on behalf of The Netherlands.

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