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 34942 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) Checkered Fillomino 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 Stostone 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
unsolvedKropki Quadruple: Tutorial (1/4)
by BlueToast001 (on 18. May 2026, 17:00)
3271
80 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
7691
72 %
unsolvedQuaver (4x4)
by Mr Toffee (on 11. December 2025, 00:01)
4791
73 %
unsolvedspeedrun sudoku
by Tis_Me_Alex_B (on 6. March 2024, 17:39)
13741
63 %
unsolvedIntro to Skyscrapers
by addie (on 23. June 2026, 00:00)
1851
73 %

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The most beautiful puzzles

DescriptionsolvedRating
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
553
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)
264
100 %
unsolvedAdventskalender 2020, Finale - Riesenrundweg
by Zzzyxas (on 1. December 2020, 07:00)
295
100 %

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The newest puzzles

DescriptionsolvedRating
newEntrothermia 6
by fractalminding (today, 18:35)
04
N/A
newSnakes in the Desert
by Vythic (today, 13:35)
431
95 %
newChakra
by pmays123 (today, 11:31)
82
N/A
newVariantDoku Daily Puzzle: July 12
by Brandy New (today, 11:26)
421
85 %
newA 38
by KNT (today, 07:05)
103
98 %

Show complete list

Latest

New commentsLast solved

All Dots Given II (today, 19:43 by Pegazus)
17:07

Parity Fun 37 (today, 19:02 by VitP)
fyi: the "Global Non-consecutive Parity" rule is extremely weak, and...

By The Way, Which One's Pink? 2 (today, 18:57 by amirs)
Great puzzle! I loved the fact that it still required a lot of thinking even...

There Exists - ∃x (today, 18:38 by snuuba)
I agree with PinkNickels, deserves a higher rating. Many thanks for sharing

Unique Renbans (today, 18:34 by Onkel_Dagobert)
Ein großartiges, sehr schweres Rätsel. Vor allem sehr ungewöhnlich, da waren...

Unique Renbans (today, 18:24 by Onkel_Dagobert)
Ein großartiges, sehr schweres Rätsel. Vor allem sehr ungewöhnlich, da waren...

Colours in the (k)night XIII (today, 18:02 by GiaRF)
Very nice, thks !

A 38 (today, 17:55 by Christounet)
Good fun! Thanks :)

Sapphires and Beads (today, 17:27 by Winterbeard)
That was hard for a solid 1-1.5* man like me. I got the digits required for the...

Roman Rainbow (today, 17:16 by snuuba)
Beautiful, thanks

today, 19:52
Greatest Product by QuiltyAsCharged

today, 19:52
Entropic Killer Dots / Entropische Killerpunkte by jon48

today, 19:52
ShatteredSudoku by elloschmello

today, 19:52
BlockThermo by ManniMensen

today, 19:52
Like a Magazine by besti

today, 19:51
Snakes in the Desert by Joyofrandomness

today, 19:51
Sapphires and Beads by Lahotos

today, 19:51
Run tee by brskri

today, 19:50
Vertigo (0-9 Challenge) by marcnesium_iv

today, 19:50
Odd or Even Thermometers by raxsiny

Show complete list

Show complete list


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