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 33394 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
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
5811
73 %
unsolved3 Numbers; 2 Clues; 1 Little Snack
by Duarte-Carvalho (on 30. January 2026, 15:01)
2751
67 %
unsolvedPaperclip (4x4)
by Mr Toffee (on 18. January 2026, 15:35)
4341
74 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
8421
78 %
unsolvedDay 9: Chess Sudoku
by SharpFox (on 9. December 2025, 06:00)
4511
78 %

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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
newTrapped Knights
by ZenLOSER (today, 00:33)
02
N/A
newRoom 1 Easter Egg
by edd (today, 00:00)
92
N/A
new9800X3D
by Justalilguy (yesterday, 23:56)
03
N/A
newMagnetic Yin Yang
by Killer Joe (yesterday, 23:47)
13
N/A
newRoamin' II
by NotVeryNeat (yesterday, 22:14)
171
95 %

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Latest

New commentsLast solved

Roamin' II (today, 01:39 by marajade)
Very fun! Quadruples are one of my favorite constraints and this showcased them...

Red Baron Fokker Dr1 (today, 01:39 by atheeromar)
SudokuPad solution checking link:
https://sudokupad.app/lipgo3femc

Roamin' II (today, 01:05 by Fisherman)
Very Neat.

Dvsjxvnt (today, 01:01 by D3M4R)
Bro I love your puzzles but the 18 digit code is audacious

Dvsjxvnt (today, 01:01 by D3M4R)
Bro I love your puzzles but the 18 digit code is audacious

Dvsjxvnt (today, 01:00 by D3M4R)
Bro I love your puzzles but the 18 digit code is audacious

Baby Steps (today, 00:30 by wuc)
Great cc puzzle. 2.5-3* to me. Great setting thx.

Glyphs (today, 00:07 by damo_89)
Solved in a 1* time but I think the opening pushes to a low 2.

Bond's eX Villain sings twice (today, 00:07 by Myfyr MJ)
Very nice but very tough too, the negative XV constraint was very tough indeed.

Bullet Train (yesterday, 23:57 by Playmaker6174)
Very clever setting for a permaculture puzzle! It took me an annoying amount of...

today, 01:57
Envious Arrows by Kirra

today, 01:56
Glyphs by fergus

today, 01:56
Mirror in the Fog by mantle_alta

today, 01:56
Follow the X-Sums by louie.lly

today, 01:56
Slope = Rise/Run by Synergenesis

today, 01:53
Tower by drifting

today, 01:53
Glyphs by Pairot

today, 01:53
Space settlement by garage

today, 01:52
Room 1 Easter Egg by wjdrumm

today, 01:51
RAT RUN 28: Hypothesis by PrpLTrtL

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Show complete list


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