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 20982 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) 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)
2921
73 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
2981
60 %
unsolvedPlacement Puzzle 1
by karencarpenter (on 26. December 2021, 14:42)
9111
55 %
unsolvedEasy Doubles, Thermo Arrow
by SimplePurpleFrog (on 17. October 2023, 18:20)
5731
77 %
unsolvedKnickwege invers für Anfänger (1) mit Lösungshinweisen
by hopppe (on 17. March 2010, 15:00)
5251
44 %

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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 %

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The newest puzzles

DescriptionsolvedRating
newYoung King Kuudos and the 13 monsters - Dungeons & Diagrams
by SirWoezel (today, 16:04)
04
N/A
newKiller in the Fog
by wuc (today, 15:15)
73
N/A
newTwinkle
by Sumanta(ANU) (today, 15:14)
22
N/A
newJ.O.E. 3 - The pre-prequel
by JayForty (today, 12:19)
371
93 %
newDutch Flat Mates (Double Sandwich Sums)
by Flinty (today, 11:30)
92
N/A

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Latest

New commentsLast solved

Easter Sokoban (today, 16:26 by yttrio)
Very cool idea! Had to think quite carefully about how to not smash the eggs.

Broken symmetry (today, 16:20 by ChinStrap)
Thank you so much for creating a puzzle to justify my ridiculous notation...

1 (today, 16:03 by damasosos92)
Very nice puzzle!

J.O.E. 3 - The pre-prequel (today, 16:01 by ThymePass)
A beautiful puzzle that's got my pareidolia kicking in. What a fine aquiline...

J.O.E. 3 - The pre-prequel (today, 15:56 by VitP)
very easy, but still
"obviously handcrafted"

Wish You Were Here (today, 15:38 by pms_headache)
Another delightful challenge. Thx

Restricted Access (Fog of War) (today, 15:31 by azsuth)
Discovered that there are actually 27 shades of colors in Sven's Sudokupad...

9 > 7 (today, 15:22 by chain.reader)
perfect colouring puzzle slightly more challenging than an XV, cause I had to...

Dutch Flat Mates (Double Sandwich Sums) (today, 15:16 by sorryimLate)
Very easy but very nice. It was a fun introduction to double sandwich puzzles...

Corners and Sum Lines (today, 15:05 by ChinStrap)
Super fun! Many times I thought nothing could possibly be forced but it winds...

today, 16:35
Jumping Thermos by cbattles

today, 16:35
Bank Shot by wilsig

today, 16:34
Killer in the Fog by Ploctypus

today, 16:34
Eight Layered Sandwich by Elytron

today, 16:34
Sudoku Variants Series (133) - Ratio Sudoku by martin1456

today, 16:32
Killer in the Fog by athenaria

today, 16:31
Dislocated Strands [Disjoint] by Gydoku

today, 16:31
Re-framed - A tribute to riffclown by Crul

today, 16:30
Seis Caballos by pms_headache

today, 16:30
Cave of Killers by galgamer

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):
lmdemasi (19), Crul (11), valle1124 (10), ttennyson115 (7), cbattles (6), ChinStrap (6), Chefofdeath (5), Crusader175 (5), howmungenein (5), imhesham (5), NineK (5), OGRussHood (5), Gydoku (4), h5663454 (4), martin1456 (4), pms_headache (4), Snookerfan (4), yttrio (4), AltVoid (3), EmX68 (3), Joanie (3), Snaques (3), TheDrunkBaby (3), tuturitu (3), Benji (2), Elytron (2), gige (2), Guillem98 (2), japanoise_breakfast (2), keenbowl (2), Krokant (2), Martini  (2), mercierus (2), PuzzleDoubt (2), ThymePass (2), wilsig (2), arbitrary (1), athenaria (1), creo (1), davidjshort (1), Dentones (1), DiMono (1), ErnoWindt (1), galgamer (1), ickie (1), killer_rectangle (1), miksquared (1), mormagli (1), Ploctypus (1), Silverbyte (1), Toren (1), 99%Sneaky (0), andywash (0), bbutrosghali (0), Bionic Cheese (0), Black_Doom (0), Blobz (0), carl.gershman (0), cybers (0), damo_89 (0), ddx01 (0), Eggmountains (0), Euclid (0), Gilliatt (0), JayForty (0), jjj (0), Matti64 (0), meggen033 (0), mitch.keeping (0), nikkomachiavelli (0), nobiggs (0), Perladel (0), Przymulony (0), RaygunUltra (0), roku137d (0), Smartacus (0), St9 (0), SudokuFan (0), synth (0), unclebobbob (0), virgil (0), WeakSolver (0)

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