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 32516 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)
3211
74 %
unsolved3 Numbers; 2 Clues; 1 Little Snack
by Duarte-Carvalho (on 30. January 2026, 15:01)
1841
63 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
7681
78 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
5041
73 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
12091
63 %

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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 %

Show complete list

The newest puzzles

DescriptionsolvedRating
newChess-doku
by masetab (today, 16:03)
13
N/A
newContainment
by Blobz (today, 16:00)
83
N/A
new3 Vs: Vicious Velocity Valve
by gadgetgreen (today, 15:42)
62
N/A
newErica 35 (Fog Edition)
by SennyK (today, 15:30)
372
87 %
newEgg Salad Sandwich
by lmdemasi (today, 13:46)
83
N/A

Show complete list

Latest

New commentsLast solved

Mimosa Bubbles (today, 18:18 by QuozBat)
I liked solving it, but the Tien Dots are just an X that can't have 4 or 6. It...

Japanese Forest Walk (2) (today, 18:15 by Alex)
Amazing!

Erica 35 (Fog Edition) (today, 18:08 by faltenin)
That was a lot of fun! I don't think it's a 3 star difficulty, maybe 1 1/2? I...

Latin Dime (today, 18:01 by TeamSchmidt)
The solution code should say 6 digits.

Easy Peasy Sudoku Leftover (03) - Killer Skyscrapers (today, 17:41 by Franjo)
Not easy peasy, but delicious. Thank you very much for creating and sharing...

3 Vs: Vicious Velocity Valve (today, 17:34 by VitP)
requires only basic sudoku and careful scanning
--> level 1

King Kong On The Tower (today, 17:34 by Ganbatte)
A true one-star puzzle, thank you! I also appreciate the solution checker as I...

Erica 35 (Fog Edition) (today, 17:32 by Myfyr MJ)
Very nice, found this one very easy.

Erica 35 (Fog Edition) (today, 17:31 by galium_odoratum)
Fun puzzle! Based on my solving time (19min) it is a 2*. I would say it starts...

Schrödinger 102: Non-Separable States (today, 17:15 by abadx)
Sudokupad short link: https://sudokupad.app/a7vwj0asw9

today, 18:21
Schrödinger 303: S-Duality by samjna0049

today, 18:21
XV Sandwich by PinkNickels

today, 18:20
Erica 35 (Fog Edition) by SKORP17

today, 18:20
Rentierquantelung by thintheboxking

today, 18:18
Portal Rainbow by RobotChicken

today, 18:18
Kropki Drops by rstarks

today, 18:18
Egg Salad Sandwich by SKORP17

today, 18:17
One Knight's Crusade by Pioooooo

today, 18:16
The Ones Who Came Before by Zzzzz...

today, 18:16
Sandwich Break [YYJ Pack] by Tompzini

Show complete list

Show complete list


106 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
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