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 32584 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 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
unsolvedPaperclip (4x4)
by Mr Toffee (on 18. January 2026, 15:35)
3321
74 %
unsolved3 Numbers; 2 Clues; 1 Little Snack
by Duarte-Carvalho (on 30. January 2026, 15:01)
1901
64 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
7731
78 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
5121
73 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
12121
64 %

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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)
405
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)
285
100 %

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The newest puzzles

DescriptionsolvedRating
newrhyrhy
by rhyrhy (today, 05:27)
01
N/A
newA Challenge For Your Soul! (Satan 2025)
by MathGuy_12 (today, 05:10)
15
N/A
newSame Difference
by Deckatron (today, 04:01)
03
N/A
newBattle With The Archers 41: The Fate of Three Worlds (refined)
by Playmaker6174 (today, 03:00)
44
N/A
newPickled Beets
by ul-Rhymm (today, 02:07)
23
N/A

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Latest

New commentsLast solved

abcdefu (Diagonal XV Kropki puzzle) (today, 05:17 by MysticMan)
Not a big fan of complicate the understanding of the rules (we do have enough...

Icewalk Sudoku (today, 04:49 by Agent)
Cool, great ending indeed!

MajorLuke II (Meidjuluk N=12) (today, 04:29 by MaizeGator)
simply brilliant. So satisfying to fit all the regions together

Through the Caverns [YYJ Pack] (today, 04:15 by heliosfant)
Thanks for the great puzzle. 5/5
Bit annoyed at the solution code since after...

Pickled Beets (today, 03:24 by deltameth)
Could you please check the code? I solved but the code does not fit.

Pangolin (today, 02:59 by Crusader175)
Very cool interaction!

Exclusive Lines (today, 02:37 by Oddlyeven)
Another great checkpoint puzzle! Thanks!

Light The Fuse: Chain Reaction (today, 02:18 by Jasperrr)
The red line not being a parity line also caused me to fail the first time...

RAT RUN 27: Productivity (today, 02:11 by darkgently)
As a maths lover, I didn't think this was harder than the usual Rat Run...

Squire crossfire (today, 02:07 by QuiltyAsCharged)
This is a top notch puzzle. The squire rule is a neat idea and it's used very...

today, 05:35
Sums Plus (Extra Region Arrow Sudoku) by nyxie

today, 05:34
RAT RUN 27: Productivity by MikeMeech

today, 05:33
Websuki (1) by aenderan

today, 05:33
Who Broke My Regions? by bereolosp

today, 05:25
Horse in the Fog by Vaurien

today, 05:24
With Friends Like This ... by agedsaltwater

today, 05:23
Who Sank First? by MaxSmartable

today, 05:23
Bishops and Knights and Rooks and Kings, Oh My! by rain1234

today, 05:22
Regionometers by Zzzzz...

today, 05:19
This FOG is a Killer GAS by vixeast

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Show complete list


38 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
bereolosp (20), aenderan (17), Vaurien (9), Andrewsarchus (6), rain1234 (6), nyxie (5), agedsaltwater (4), Donatello_86  (4), Zzzzz... (4), MaxSmartable (3), smckinley (3), Agent (2), chinesemaster (2), IcaroLopes (2), MysticMan (2), nikka240 (2), tuturitu (2), Bconner5 (1), CareBaer (1), deangaudet (1), isajo4002 (1), juggler (1), macintux (1), MikeMeech (1), ash810 (0), edd (0), EYEONYSUS (0), gaihou (0), gxorgx (0), Karitsu (0), masetab (0), Md88keys (0), nonofish (0), nuzzopa (0), Playmaker6174 (0), ponyruns (0), rhyrhy (0), tiuhto (0)

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