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 30919 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 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 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
unsolvedRose Puzzle 1
by RailMan (on 13. June 2025, 15:45)
5921
79 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
6371
77 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
3811
73 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
11091
63 %
unsolvedOne Minute Puzzle
by wuc (on 23. February 2024, 08:24)
9341
76 %

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The most beautiful puzzles

DescriptionsolvedRating
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
523
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)
275
100 %

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The newest puzzles

DescriptionsolvedRating
newLost and Found: A massive collaboration puzzle
by Jeet Sampat (today, 20:54)
54
N/A
newUnique Yet Equal
by fnin (today, 18:34)
15
N/A
newBattle for territory
by fnin (today, 18:34)
03
N/A
newErica 17 (Fog Edition)
by SennyK (today, 17:15)
751
94 %
newA Partridge In A Pear Tree
by gdc (today, 16:41)
172
96 %

Show complete list

Latest

New commentsLast solved

A Partridge In A Pear Tree (today, 23:10 by galium_odoratum)
This was mind bending. It took a while to wrap my head around all the...

Lost and Found: A massive collaboration puzzle (today, 23:08 by Piatato)
I had fun being a part of this project! Happy to see how it turned out in the...

Calm Construction (today, 22:49 by valacd)
Great idea to combine normal sudoku with cc. Great fun to solve. Thank you!

Perfect In Our Imperfection (today, 22:42 by Ragna)
Perfect fun puzzle! Thank you, Will. :-)

Leaning In (today, 22:40 by Treme)
Much fun! Thank you :)

Entro-Peas (with sujoyku) (today, 22:33 by Lenivaya_Joppa)
Thank you for this nice puzzle, dear SamuPiano and sujoyku! :)

Target Practice (today, 22:20 by damo_89)
Surprisingly tricky, I rated 3*

Unlimited Killer (today, 21:53 by derivada)
lovely flow!

Arrow Bits (today, 21:43 by sparkymanu)
Very nice puzzle, I loved how the different rules took place at different times

Turkey Dinner in the Fog (today, 21:37 by Nightmare2805)
That was fun

today, 23:19
Erica 17 (Fog Edition) by ludvigr04

today, 23:19
Turkey Dinner in the Fog by W1n5t0n

today, 23:18
Rainbow by zuzanina

today, 23:18
Zodiac Project: Kyklos by A little nori

today, 23:17
Erica 16 by Barrels

today, 23:15
Oddmometer #1 (4x4) by Maxum21

today, 23:15
(Just Anti-Knight) ⟶ JAK-1 by TommyHMBK

today, 23:15
Symmetrical Fan by MaxSmartable

today, 23:14
Turkey Dinner in the Fog by brandon_bot

today, 23:14
Stage Lights by Uhu

Show complete list

Show complete list


79 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
Maxum21 (24), jgarber (18), JVA (11), mezkur7 (10), dipiz (9), sparkymanu (8), MaxSmartable (6), amb (5), galium_odoratum (5), gxorgx (5), nemaelefant (5), Neumino (5), saxdaddyj (5), Marshal on Mars (4), BolyaiAnna (3), brandon_bot (3), cryptique (3), Debba (3), dogfarts (3), gdc (3), josemadre (3), ludvigr04 (3), mellowrobinson (3), Rex (3), W1n5t0n (3), Barrels (2), beansontoast_ (2), BULL-TT (2), fnin (2), freshcoffee (2), GorgeousNicko (2), HighEagle (2), houellebecqqq (2), jerbear29 (2), killer_rectangle (2), Lovejoy  (2), Mad-Tyas (2), Phandor (2), Piatato (2), silent_rob (2), sujoyku (2), TommyHMBK (2), Vaccinia (2), A little nori (1), ammiraglio (1), ArtsiBurger (1), Calesch (1), Ecem1903 (1), edwardio0 (1), Zach52 (1), zuzanina (1), 3ffer (0), Agent (0), Bellsita (0), David-Bauman (0), davidagg (0), dunder (0), ebiggie (0), emirben (0), Ezequiel (0), hardline35 (0), henter (0), JBowzer (0), MaciekZ (0), Mattisahuman (0), micjo (0), Myxo (0), Nairurian (0), nonagon (0), NRB (0), ns08 (0), Ood (0), RichieRichWalker (0), Scojo (0), tdunc (0), tomer (0), TrivialHomology (0), Ungesundheit (0), zodiakbg (0)

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