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Puzzles

Because the theme of this year's NJF is "puzzles", we created a challenge for you. On this page you can find puzzles, which you can solve to get early hints of our announcements. If you have found the answer to the puzzel, send an email to containing the solution and your name, and you might get into the high scores at the top of this page!

Do you wish to notified when we publish a new puzzle? Subscribe to our mailing list, and we will send you an email whenever we have a new hint for you to solve!

High scores

Festival theme

correct answer submitted by 7 people

  1. Piet van Steen
  2. Cathalijn Leenaars
  3. Pieter-Jan Hoornaert

Scavenger hunt

correct answer submitted by 3 people

  1. Suzanne Luijten
  2. Rob van Heijst
  3. Marte Kaagman

Minesweeper

correct answer submitted by 9 people

  1. Piet & Hanna
  2. Casper Klop
  3. Karel Schuller

Half a year

correct answer submitted by 5 people

  1. Rob van Heijst
  2. Leon Schoorl
  3. Jermaine Ramlakhan

Christmas

correct answer submitted by 2 people

  1. Sijmen Huizenga
  2. Fieke Huizenga

Party

correct answer submitted by 9 people

  1. Anneroos Everts
  2. Fieke Huizenga
  3. Karel Schuller

Galashow

correct answer submitted by 1 person

  1. Merel Coppens

Gala show artists

With this year's theme it would be of course a little too straightforward to just publish all the amazing galashow artists that we have booked for this NJF. Instead, you can gather some information on these artists and try to guess who will be performing. You can download the puzzle in pdf of xlsx format. Both the solution to the puzzle or the names of the artists are counted as valid solutions for getting into the high scores.

Party!

In the sentence below all characters are replaced by other characters. Fill in the correct keys and decode the sentence!
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
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X
Y
Z



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Christmas & new year's puzzle

During the second half of December and the first half of January, the AIVD (general intelligence and security service of the Netherlands) has their christmas puzzle published (only Dutch). As a tribute to this great challenge, you can now find our own logical puzzle below.

The solution should be a 6 letter word. Both the solution and the words in the puzzle are Dutch words, but their meaning is not important.

achtzame
bling
dikbil
gouduil
haast
maan
mafkat
pils
prikgil
pruiler
tomaat
zaak
Having trouble finding the answer? Use the following hints (starting with hint 1) to get going!

Half a year to go!

Today, the 26th of November 2021, the NJF will take place exactly half a year from now! Of course this has to be celebrated with a puzzle.

Each series of numbers in the left column can be transformed into one number. Match each of these resulting numbers to one element in the right column, and find out what the question mark should be.

2 4 3 2 5 2 97 1 2711 1
2 4 3 2 5 3 73 1 199 1
2 4 3 4 5 2 59 1 653 1
2 5 3 2 5 2 83 1 2767 1
2 5 3 2 5 2 89381 1
EJC 1
Milleniumbug
NJF 1
World record 3
?
Having trouble finding the answer? Use the following hints (starting with hint 1) to get going!

💣 Minesweeper 💣

The correct answer to this puzzle was correctly submitted by 6 people, congratulations!

Click left to open a tile, click right to flag.

Flags left:

Circus scavenger hunt

On the occasion of the circusstad festival in May 2021, Rob van Heijst has developed an online scavenger hunt! Since the theme of next year's NJF is "puzzles", we are happy to feature this scavenger hunt as well! All text is in Dutch, but since the hunt is video based, it should be doable for non-Dutch speakers. :)

To get into the high scores at the top of this page, send an email containing the password of the final level to , and you might get into the high scores at the top of this page!
Click here to go
to the scavenger hunt

Festival theme

On the 1st of August, it was announced that this year's the festival theme will be "puzzles"! A week earlier we published the two nonograms below, the solutions of which being hints to this theme.

Festival logo

difficulty:
puzzle as pdf
puzzle as svg
puzzle as jpg
puzzle solution

introduction to nonograms

Easy hint

difficulty:
puzzle as pdf
puzzle as svg
puzzle as jpg
puzzle solution

introduction to nonograms

Gala show artists

With this year's theme it would be of course a little too straightforward to just publish all the amazing galashow artists that we have booked for this NJF. Instead, you can gather some information on these artists and try to guess who will be performing. Click here to download the puzzle in pdf format. Both the solution to the puzzle (with correct boxes crossed) or the names of the artists are counted as valid solutions for getting into the high scores.

Party!

In the sentence below all characters are replaced by other characters. Fill in the correct keys and decode the sentence!
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z



__
__
__
__
__
__
__
__
__
__
__
__
__
__
__
__
__
__
__
__

Christmas & new year's puzzle

During the second half of December and the first half of January, the AIVD (general intelligence and security service of the Netherlands) has their christmas puzzle published (only Dutch). As a tribute to this great challenge, you can now find our own logical puzzle below.

The solution should be a 6 letter word. Both the solution and the words in the puzzle are Dutch words, but their meaning is not important.

achtzame
bling
dikbil
gouduil
haast
maan
mafkat
pils
prikgil
pruiler
tomaat
zaak
Having trouble finding the answer? Use the following hints (starting with hint 1) to get going!

Half a year to go!

Today, the 26th of November 2021, the NJF will take place exactly half a year from now! Of course this has to be celebrated with a puzzle.

Each series of numbers in the left column can be transformed into one number. Match each of these resulting numbers to one element in the right column, and find out what the question mark should be.

2 4 3 2 5 2 97 1 2711 1
2 4 3 2 5 3 73 1 199 1
2 4 3 4 5 2 59 1 653 1
2 5 3 2 5 2 83 1 2767 1
2 5 3 2 5 2 89381 1
EJC 1
Milleniumbug
NJF 1
World record 3
?
Having trouble finding the answer? Use the following hints (starting with hint 1) to get going!

💣 Minesweeper 💣

Unfortunately this game can only be played on a larger screen, using a mouse with a left and right button.

Circus scavenger hunt

On the occasion of the circusstad festival in May 2021, Rob van Heijst has developed an online scavenger hunt! Since the theme of next year's NJF is "puzzles", we are happy to feature this scavenger hunt as well! All text is in Dutch, but since the hunt is video based, it should be doable for non-Dutch speakers. :)

To get into the high scores at the top of this page, send an email containing the password of the final level to , and you might get into the high scores at the top of this page!

Click here to go to the scavenger hunt


Festival theme

On the 1st of August, it was announced that this year's the festival theme will be "puzzles"! A week earlier we published the two nonograms below, the solutions of which being hints to this theme.

difficulty:
puzzle as pdf, svg, jpg
puzzle solution
introduction to nonograms
difficulty:
puzzle as pdf, svg, jpg
puzzle solution
introduction to nonograms