Logic Masters Deutschland e.V.

The Puzzle Portal

Please note: The creation and use of multiple accounts is not desired in the Portal. (Exceptions are only permitted for technical reasons or with the consent of the association Logic Masters Deutschland.) We reserve the right to block users who violate this rule.

The puzzle portal is a collection of puzzles created by puzzle enthusiasts from all over the world. At the moment the portal contains 34018 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.


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) A 38 ABC Box ABCD ABCtje Achtelwenden Akari Anglers Anti-Diagonal (Variant) Anti-Factor Lines (Variant) Anti-Knight (Variant) Anti-Queen (Variant) Aquarium Arrows Arrows (Variant) Battenburg (Variant) Battlefield (Variant) Battleships Between (Variant) Binairo (Variant) Brick Wall Broken 159 (Variant) Candles Capsules Carpet (Variant) Castle Wall Cave Chaos Construction (Variant) Clone (Variant) Compass Compass (Variant) Congruence Loop Consecutive (Variant) Consecutive Pairs (Variant) Coral Country Road Cross the Streams Crossword Puzzle Diagonal (Variant) Difference (Variant) Disjoint Groups (Variant) Distance (Variant) Dominion Domino Search Dots (Theme) Double Trouble (Variant) Earthquake (Variant) Easy as ABC Entropy (Theme) Equality Even/Odd (Variant) Extra Regions (Variant) Fibonacci (Theme) Fillomino Fortress (Variant) Friendly (Variant) Galaxies Geradeweg 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 Kurotto Landvermessung Laser Letter Puzzle Lighthouses LITS Little Killer (Variant) Lockout Lines (Variant) Logical Magic Labyrinth Magic Square Magnets Masterword Masyu Mathrax Maximum (Variant) Mid-loop Minesweeper MinMax (Variant) Modifier Cells (Variant) Moon-or-Sun Myopia Nanro Neighbours Non-Consecutive (Variant) Non-Touching (Variant) Nonogram Norinori Number Link Nurikabe Nurimisaki Outside (Variant) Palindrome (Variant) Parity (Theme) Parity Party (Variant) Pathway (Variant) Pentominous Pentopia Position Sums (Variant) Primes (Theme) Product (Theme) Products Pyramid Quadruple (Variant) Quattroquadri (Variant) Railroads Ratio (Variant) Ratio Pairs (Variant) Region Sum Lines (Variant) Regional Sums Remote (Variant) Renban (Variant) Roller Coaster Roman Numerals (Variant) Roman Sums Rossini (Variant) Samurai (Variant) Sandwich (Variant) Sashigane Shakashaka Shikaku Shimaguni Skyscraper Clusters Skyscrapers Slingshot (Variant) Slitherlink Smashed Sums Snake Snake (Variant) Star Battle Stostone Sudoku Suguru Tapa Taxicab (Variant) Tents Thermo (Variant) Thermometers Umbrellas Underground Urnenrätsel Variables Tapasyu Windoku (Variant) X-Sums (Variant) XV (Variant) XV Pairs (Variant) XY-Differences (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

DescriptionsolvedRating
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
6951
72 %
unsolvedDay 9: Chess Sudoku
by SharpFox (on 9. December 2025, 06:00)
5401
77 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
13001
63 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
8951
79 %
unsolvedQuaver (4x4)
by Mr Toffee (on 11. December 2025, 00:01)
4151
73 %

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The most beautiful puzzles

DescriptionsolvedRating
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
543
100 %
unsolvedDie Kryptos - S02E06: Summenbild Rundweg / Sudoku
by tuace (on 16. March 2018, 15:10)
415
100 %
unsolvedJapanische Höhle mit Irrwisch von den Außerirdischen (2)
by ibag (on 20. April 2018, 00:00)
415
100 %
unsolvedGlückwünsche vom Orion
by Statistica (on 9. July 2019, 00:55)
254
100 %
unsolvedAdventskalender 2020, Finale - Riesenrundweg
by Zzzyxas (on 1. December 2020, 07:00)
295
100 %

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The newest puzzles

DescriptionsolvedRating
newVariantDoku Daily Puzzle: May 17
by Brandy New (today, 10:31)
13
N/A
newClueless Sudoku X
by AlfSmith (today, 09:34)
13
N/A
newThrees See
by mellowrobinson (today, 07:29)
03
N/A
newVicissitudes
by NicoD (today, 05:30)
84
N/A
newGrowing a bonsai tree (easy Yin Yang)
by Killer Joe (today, 01:10)
341
93 %

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Latest

New commentsLast solved

Growing a bonsai tree (easy Yin Yang) (today, 11:25 by VitP)
ordinarily, yin/yang puzzles cannot be level 1, and even level 2 is a stretch....

Vicissitudes (today, 10:50 by Snookerfan)
Superb! Just a single line makes such a great and fun puzzle, incredible. 3...

Growing a bonsai tree (easy Yin Yang) (today, 10:41 by JVA)
This was quite hard, despite being familiar with yin yang

Any olunteers to fi my keyboard? (today, 10:26 by Narayana)
The title alone earns this a ery nice!
This is a GAS negatie constraint.

Quindecim Obscura (today, 10:22 by KyleBaran)
A fun coffee break puzzle

--

Use whatever you want. People are only...

Vicissitudes (today, 10:01 by Elliott810)
Absolutely brilliant again! Thank you:)

Secret ingredients (today, 09:51 by Lor)
Beautiful symmetry. Loved it!

**
Thank you, Lor! I am glad that you liked...

X-sums Sandwich Chaos Construction (today, 09:26 by erml)
Sublime!

Growing a bonsai tree (easy Yin Yang) (today, 09:10 by Merovius)
Ouff, took me 90m because I forgot one of the basic Yin Yang tricks m( So, only...

Any olunteers to fi my keyboard? (today, 08:54 by Onkel_Dagobert)
I‘d like to point out t

today, 11:39
Greyscale by keenbowl

today, 11:39
This Bottle's Full (Wraparound, Full Rank) by Zzzzz...

today, 11:38
Humble beginnings by darkgently

today, 11:37
VariantDoku Daily Puzzle: May 17 by zonny

today, 11:36
Consecutive Ladder by lmdemasi

today, 11:35
Pyramids (4x4) by Kantaga

today, 11:35
RAT RUN 37: Fruitful by mir85

today, 11:33
VariantDoku Daily Puzzle: May 16 by fuxia

today, 11:32
Rose Puzzle 14 Irregular Arrows by FugnaDude

today, 11:32
Sprinting in the Dark by Docbes

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Show complete list


63 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
Zzzzz... (14), lmdemasi (9), snowbaby (9), Docbes (8), spamus (8), FugnaDude (7), Jodelbanane (7), QuiltyAsCharged (7), 3ColorTheorem (6), darkgently (4), firespire (4), geronimo92 (4), h5663454 (4), keenbowl (4), Pioooooo (4), dorverbin (3), Finn (3), Fisherman (3), Kantaga (3), mh27577 (3), vtable (3), zonny (3), DutchMark (2), falk (2), MartinR (2), Mr_tn (2), MysticMan (2), soupseason (2), Stargazing Albatross (2), 6rank (1), BotterOtter (1), Fanfanfan94 (1), fuxia (1), luuu (1), mir85 (1), sujoyku (1), xiaojiu (1), AllesUgo (0), Batool (0), Brandy New (0), buffygoth (0), CaballeroOscuro (0), ced (0), Deivi55 (0), ehnvn (0), FoulMoodPotato (0), gige (0), goodcity (0), Johannes Quack (0), Joseph nehme (0), kima2008 (0), Liamhere (0), mabjim007 (0), NurglesGift (0), NXTMaster (0), PjoeterBliep (0), Propargyl (0), RailMan (0), renski (0), seeppp (0), SkepticalMario (0), timl37 (0), VitP (0)

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