Logic Masters Deutschland e.V.

The Puzzle Portal

The puzzle portal is a collection of puzzles created by puzzle enthusiasts from all over the world. At the moment the portal contains 9445 puzzles.

If this is your first visit to the puzzle portal we recommend that you take a tour to get an overview of the portal contents.

We have put together a collection of puzzles suitable for beginners. These contain solution hints - and we hope that these puzzles will help you getting started.

Note: Parts of the Portal are currently under revision. In particular, the management of labels and tags (marks to describe puzzle properties) has changed recently. We are asking you to observe the guidelines on this Help page when creating new puzzles, and to adjust the labels/tags for puzzles which you have created in the past following the same standards.

Another note: The Portal will be moderated in the future, see the following forum thread for more information. Each Moderator can be contacted via his User page, and there is a link in the help pages to send a message to the entire moderator team.

To help you getting started navigating the portal we have put together some puzzle collections.

Puzzle typesPuzzle collectionsPuzzle authors
Sudoku Easy and nice Richard
Slither link Average and nice Luigi
ABC-tje Difficult and nice berni
Pentomino puzzles Often solved and nice
Mystery puzzles

10-in-9 (Variant) 159 (Variant) ABC Box ABCtje Achtelwenden Akari Anglers Anti-Diagonal (Variant) Anti-Knight (Variant) Anti-Queen (Variant) Aquarium Arrows Arrows (Variant) Battlefield (Variant) Battleships Between (Variant) Brick Wall Candles Capsules Castle Wall Cave Chaos Construction (Variant) Clone (Variant) Compass (Variant) Congruence Loop Consecutive (Variant) Consecutive Pairs (Variant) Coral Country Road Diagonal (Variant) Difference (Variant) Disjoint Groups (Variant) Domino Search Dots (Theme) Easy as ABC Even/Odd (Variant) Extra Regions (Variant) Fillomino Fortress (Variant) Galaxies German Whispers (Variant) Greater Than (Variant) Hakyuu Hashiwokakero Heyawake Hitori Irregular (Variant) Japanese Sums Kakuro Killer (Variant) Knight Move (Theme) Kropki Kropki Pairs (Variant) Kuromasu Laser Letter Puzzle LITS Little Killer (Variant) Lockout Lines (Variant) Logical Magic Labyrinth Magic Square Magnets Masterword Masyu Minesweeper Non-Consecutive (Variant) Non-Touching (Variant) Nonogram Norinori Number Link Nurikabe Palindrome (Variant) Parity (Theme) Parity Party (Variant) Pentopia Position Sums (Variant) Primes (Theme) Product (Theme) Pyramid Quadruple (Variant) Railroads Ratio (Variant) Ratio Pairs (Variant) Renban (Variant) Roller Coaster Sandwich (Variant) Shakashaka Shikaku Skyscraper Clusters Skyscrapers Slingshot (Variant) Slitherlink Smashed Sums Snake Snake (Variant) Star Battle Sudoku Tapa Tents Thermo (Variant) Umbrellas Underground Variables Tapasyu Windoku (Variant) X-Sums (Variant) XV (Variant) XV Pairs (Variant) Yajilin Yin and Yang

Enjoy browsing the portal!

If you are interested in the recent growth of new puzzles, see the discussion in our forum (scroll down to see comments in English).

The easiest puzzles

unsolvedUnique Dominoes (4x4)
by hexadoodle (on 17. May 2021, 04:20)
70 %
unsolvedBatterie (CHalbvoll)
by niruaL (on 27. July 2021, 05:55)
64 %
unsolvedXikaku für Anfänger
by hopppe (on 14. May 2010, 11:00)
59 %
by CJK (on 28. June 2021, 19:33)
67 %
unsolvedLuck-Based Sudoku?
by Geoteve (on 29. May 2021, 09:55)
76 %

Show complete list

The most beautiful puzzles

unsolvedRundweg Family Photo
by pokerke (on 14. February 2011, 00:57)
100 %
by tuace (on 13. April 2015, 00:47)
100 %
unsolvedNeue Post vom Außerirdischen
by ibag (on 6. September 2015, 00:00)
100 %
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
100 %
unsolvedAdventsportale, Teil 4
by pirx (on 23. December 2018, 12:00)
100 %

Show complete list

The newest puzzles

newIrregular thermometer sudoku puzzle pack
by Aspartagcus (today, 21:49)
newCake or death?
by vidarino (today, 18:46)
newQuorum Rings
by Jay Dyer (today, 17:04)
newGAS Guzzler (Sudoku)
by PDN777 (today, 15:55)
79 %
newNon-consecutive Killer
by Florian Wortmann (today, 13:57)
92 %

Show complete list


New commentsLast solved

24 Rätsel in 24 Stunden (Teil 3) - Höhle (today, 21:57 by PixelPlucker)
An incredibly lovely Cave puzzle! Thanks for it! :)

GAS Guzzler (Sudoku) (today, 21:45 by ctshirk7)
Loved it. The communication at the bottom took me a while to work out but it...

Wichtel 2020 (11): Equality-Doppelstern-Bausatz (today, 19:19 by Joe Average)
Genuss pur !

Cute Mischief - A 6x6 Irregular Sudoku Pack (today, 17:08 by SudokuExplorer)
Superb collection of interesting and fun mini treats!
It was a nice surprise...

Consecutive Sums Sudoku (today, 16:31 by SudokuExplorer)
@TimE: You're welcome! I'm glad you enjoyed it. :-)

@abed hawila: Cheers...

Whispering Knight (today, 15:49 by alpha_bet)
So incredibly elegant. It is always a pleasure, Phistomefel :-)

Non-consecutive Killer (today, 15:33 by dlindberg3)
I enjoyed this puzzle!
Thanks for solving :-)

Cute Mischief - A 6x6 Irregular Sudoku Pack (today, 14:44 by DVFrank)
Very nice collection! I especially enjoyed Renban and Rainbow (which was...

Sudoku Variants Series (249) - Superconsecutive Sudoku (today, 14:06 by Nick Smirnov)


The Graveyard Of Ideas (today, 13:17 by juhish)
I really loved this! This was the second sudoku ever that I recommended to all...

today, 22:33
Non-consecutive Killer by Marcos

today, 22:32
Cake or death? by ManuH

today, 22:29
XVXVX by Pibonacci

today, 22:28
3-Layer-Cake / 3-Schicht-Torte Nr. 2 by MalkoMann2

today, 22:27
GAS Guzzler (Sudoku) by rugbyrefmd

today, 22:24
Yajilin - Gather by moeve

today, 22:18
24 Rätsel in 24 Stunden (Teil 4) - Doppelstern by PixelPlucker

today, 22:18
Yajilin - Scatter by moeve

today, 22:10
Digit-less nonconsecutive Sudoku by weiken

today, 22:03
Sudoku Variants Series (024) - Star Products by patinthehat48

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25 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
SKORP17 (13), ManuH (9), lovely (4), Joe Average (3), Marcos (3), moeve (3), gamlesvarten (2), krash (2), Pibonacci (2), SirWoezel (2), wenchang (2), Askloomok (1), DanMeehan (1), DVFrank (1), MalkoMann2 (1), MavericksJD (1), Ragna (1), rugbyrefmd (1), BellBear (0), Danekiller (0), ExFalsoQuodlibet (0), Krokant (0), SenatorGronk (0), tsc (0), xbl (0)