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 32924 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)
3711
74 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
8031
78 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
5361
73 %
unsolved3 Numbers; 2 Clues; 1 Little Snack
by Duarte-Carvalho (on 30. January 2026, 15:01)
2271
65 %
unsolvedRose Puzzle 1
by RailMan (on 13. June 2025, 15:45)
7781
78 %

Show complete list

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 %

Show complete list

The newest puzzles

DescriptionsolvedRating
newStrechy Arrows
by Monotof (today, 18:22)
13
N/A
newProductive Killers
by Yawnus (today, 17:27)
14
N/A
newHow to Slice a Sandwich
by ul-Rhymm (today, 16:48)
14
N/A
newFluctuate
by Blobz (today, 16:00)
322
97 %
newHugh, Lorry
by Mr Toffee (today, 14:07)
191
N/A

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Latest

New commentsLast solved

Death Spiral (today, 19:28 by morgannamodeaura)
how on earth is this a four star difficulty puzzle? two stars, easily.

RAT RUN 30: Star Rats (today, 19:24 by Nairurian)
A bit more tricky today, it was far from the one that took me the longest but...

Selective Arrows (today, 19:08 by Exigus)
Very interesting stuff. Often felt like I had to think opposite to what I am...

Fluctuate (today, 19:04 by Myfyr MJ)
Very nice, rating difficulty is about right.

Opparity (today, 19:04 by Franjo)
Thank you very much for creating and sharing this beauty. Always a pleasure to...

RAT RUN 4: Borderline (today, 18:59 by Djirt)
Великолепное судоку!)

Build Your Own Anti-Knight Sudoku 2 (today, 18:46 by rich_27)
Here's a sudokupad link for just the solve grid without the visual example:...

Extreme Roping Speed Run (today, 18:39 by Archon)
5:37 and I kind of forgot about the whole roping thing. :/

Fluctuate (today, 18:17 by PinkNickels)
So fun. Love these types of puzzles. Thanks for providing so many fun solves.

RAT RUN 30: Star Rats (today, 18:06 by antiknight)
Amazing puzzle! It has some nice deductions.

today, 19:32
Erica 43 (Dual Palindrome Edition) by SKORP17

today, 19:32
Strechy Arrows by King_Pusher

today, 19:32
Ein Spatz, ein Satz. (Nala’s Adventures #32) by Supertaster

today, 19:31
Dennis, Hopper by Archon

today, 19:31
RAT RUN 30: Star Rats by nazdalf

today, 19:31
An Archery Contest! by AAABatts

today, 19:31
Zapped through the Fog by JVA

today, 19:31
#parity by jgarber

today, 19:30
Fluctuate by guirigui

today, 19:30
Clone Alone by Anthony

Show complete list

Show complete list


82 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
quinnikins (30), jgarber (28), SKORP17 (16), Unknown (15), pmatos (13), Anthony (10), JVA (9), Chiefredhawk (8), Supertaster (8), gdc (7), imagle (7), sujoyku (7), AAABatts (6), Crusader175 (6), Corey115 (5), Echatsum (5), snuuba (5), Archon (4), guirigui (4), hige (4), kskit (4), marcnesium_iv (4), Merovius (4), kays (3), SennyK (3), Titatovenoor (3), -Tsigje- (2), AAAAAAAAAAAAAAAAAAA (2), Agent (2), brskri (2), Fool on Hill (2), godgamer2 (2), hasti2c (2), Kavvy (2), King_Pusher (2), Mad-Tyas (2), maxwork1113 (2), MontanaPearl (2), morgannamodeaura (2), 1425a (1), ad1643 (1), Bankey (1), Batool (1), Calesch (1), dkfan9 (1), goldensun (1), Katuize (1), mlabrum (1), Nairurian (1), nazdalf (1), Owenx (1), thargian (1), vrcngtrx_ (1), xocolatl (1), Aaravos (0), bulguline (0), Czobbler (0), deanofsalt (0), deltameth (0), ehnvn (0), faltenin (0), GBPack (0), Hayang Horangi (0), jeffrey.l.byrd19 (0), KlausRG (0), leonine (0), leszeks (0), marty_sears (0), Monotof (0), Nahileon (0), Nephenon (0), Ol-Jay (0), PetLov (0), Plopkoekje (0), PrimeWeasel (0), prodigis (0), ricola (0), SamiM (0), Simon1887 (0), Ungesundheit (0), vlin (0), Wade (0)

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