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 20573 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 (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) 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 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 Laser Letter Puzzle Lighthouses LITS Little Killer (Variant) Lockout Lines (Variant) Logical Magic Labyrinth Magic Square Magnets Masterword Masyu Mathrax Maximum (Variant) Minesweeper MinMax (Variant) Nanro Non-Consecutive (Variant) Non-Touching (Variant) Nonogram Norinori Number Link Nurikabe Palindrome (Variant) Parity (Theme) Parity Party (Variant) Pathway (Variant) Pentominous Pentopia Position Sums (Variant) Primes (Theme) Product (Theme) Products Pyramid Quadruple (Variant) Railroads Ratio (Variant) Ratio Pairs (Variant) Region Sum Lines (Variant) Regional Sums Remote (Variant) Renban (Variant) Roller Coaster Roman Numerals (Variant) Roman Sums Samurai (Variant) Sandwich (Variant) Shakashaka Shikaku Shimaguni Skyscraper Clusters Skyscrapers Slingshot (Variant) Slitherlink Smashed Sums Snake Snake (Variant) Star Battle Sudoku Suguru Tapa 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
unsolvedBeginner Palindrome
by wuc (on 8. February 2024, 20:07)
2311
73 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
2351
60 %
unsolvedPlacement Puzzle 1
by karencarpenter (on 26. December 2021, 14:42)
8871
55 %
unsolvedEasy Doubles, Thermo Arrow
by SimplePurpleFrog (on 17. October 2023, 18:20)
5371
76 %
unsolvedPluto (Dwarf Planet)
by Blobz (on 25. June 2023, 20:03)
6951
78 %

Show complete list

The most beautiful puzzles

DescriptionsolvedRating
unsolvedRundweg Family Photo
by pokerke (on 14. February 2011, 00:57)
735
100 %
unsolvedHallig-Rundreise
by tuace (on 13. April 2015, 00:47)
415
100 %
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
463
100 %
unsolvedJapanische Höhle mit Irrwisch von den Außerirdischen (2)
by ibag (on 20. April 2018, 00:00)
405
100 %
unsolvedAdventsportale, Teil 4
by pirx (on 23. December 2018, 12:00)
455
100 %

Show complete list

The newest puzzles

DescriptionsolvedRating
newMilky Way
by meggen033 (today, 14:43)
71
N/A
new4 Choose 2
by Prof.Dori (today, 14:39)
04
N/A
newCrossroads
by egubachu (today, 10:52)
123
N/A
newThe Sudoku Tree
by wuc (today, 10:37)
302
90 %
newEnjoy Your Stay
by Black_Doom (today, 07:50)
113
N/A

Show complete list

Latest

New commentsLast solved

Not for the Faint of Heart (today, 15:42 by Snookerfan)
Excellent puzzle! Thank you

Jardins Sous la Pluie Deux (today, 15:42 by wuc)
I also got a different solution to your code and it looks fine. Looks like one...

Crossroads (today, 15:39 by egubachu)
Thank you so much for telling me about Rangsk's solver and Sudoku maker. I did...

Shoot the Pears (today, 15:23 by Xendari)
awesome puzzle!

Milky Way (today, 15:09 by gUBBLOR)
Very nice, seems like both your sons have a bright future ahead of them!

Intersection (today, 14:53 by VitP)
interesting that the tiny little circle that is all we get for disambiguation...

Handlebars (today, 14:38 by 91loves)
This was my first 2-star puzzle! :) Was a bit hard to break in but very...

GP24 Leftover: Japanische Summen + Magnetplatten (today, 14:29 by AnnaTh)
Ganz, ganz toll! Vielen Dank!

← Find-the-Whisper-Loop → (today, 14:24 by LehanLehan)
Thank you very much for the puzzle, it's really hard to find the right...

The Sudoku Tree (today, 13:47 by PinkNickels)
Lovely!

today, 15:43
X Marks a Spot by GentlemanJim

today, 15:43
[New Constraint] Entropy Sudoku by DavidH

today, 15:42
Elephant in the Room by k2u5as

today, 15:42
Not for the Faint of Heart by Snookerfan

today, 15:41
Chain Reaction by cbattles

today, 15:41
I Made A Pencil Puzzle: Ciphered Tapa (18x18) by lerroyy

today, 15:41
1st of April by sedici

today, 15:41
Jardins Sous la Pluie Deux by wuc

today, 15:40
Sudoku Variants Series (003) - Search Nine Sudoku by Nadav

today, 15:37
Assembly (Tangram Killer) by krangune

Show complete list

Show complete list


73 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
PippoForte (11), abihummel (7), k2u5as (6), LehanLehan (6), dingledork (5), Nadav (5), Snookerfan (5), fuxia (4), Bionic Cheese (3), cbattles (3), Dist (3), GentlemanJim (3), jadezki (3), onbu (3), qbert72 (3), sujoyku (3), Black_Doom (2), jogerth (2), kkli (2), M8tyw31 (2), MyWay90 (2), NEWS (2), sedici (2), SeveNateNine (2), The Bard (2), valle1124 (2), Arlo Lipof (1), bansalsaab (1), Bconner5 (1), BenTen (1), chinaski (1), DavidH (1), flipping (1), gige (1), Gotroch (1), Grothenlace (1), krangune (1), Myxo (1), Nigrin (1), NogBolog (1), nuzzopa (1), palpot (1), Prof.Dori (1), Statistica (1), synth (1), ttennyson115 (1), wuc (1), 99%Sneaky (0), acid (0), AnalyticalNinja  (0), Darkgrumly (0), Echatsum (0), egubachu (0), GorgeousNicko (0), KP104 (0), kramittassum (0), leongyanhao (0), meggen033 (0), NeroChaos (0), nobiggs (0), okchill (0), One Eyed Man (0), Scojo (0), Sellers (0), Shuhua Milk (0), SudokuFan (0), TeamSchmidt (0), terrible_casserole (0), Thorsby (0), virgil (0), Will Power (0), yidog (0), zodiakbg (0)

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