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 32125 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 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)
2161
73 %
new3 Numbers; 2 Clues; 1 Little Snack
by Duarte-Carvalho (on 30. January 2026, 15:01)
941
61 %
unsolvedRose Puzzle 1
by RailMan (on 13. June 2025, 15:45)
7201
78 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
7321
77 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
4711
73 %

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The most beautiful puzzles

DescriptionsolvedRating
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
533
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 %

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The newest puzzles

DescriptionsolvedRating
newBigger Than Me
by marty_sears (today, 08:49)
51
N/A
newRituz Unicorno Unicorno XIX
by AJN (today, 08:01)
03
N/A
newLoopy Territories
by masetab (today, 02:55)
15
N/A
newFEBRUARY
by DocLogic (today, 01:02)
142
N/A
newCity Firefly
by FullDeck-Missing (today, 00:58)
83
N/A

Show complete list

Latest

New commentsLast solved

Dutch Arrows (today, 09:20 by Exigus)
Interesting how strong the constraint is, just a few little arrows. Thanks!

Aim High! (YY) (today, 09:13 by Titus Adduxas)
Wow! What a remarkable puzzle. Keeping track of the cages was quite challenging...

Bigger Than Me (today, 09:13 by TJ )
Nice one! Completely forgot about sudoku until I got a bit stuck halfway

Penpalindromes Are Numbered One (today, 08:51 by Exigus)
Fantastic palindrome. Thanks!

Greedy Cages Sudoku (today, 08:07 by Piatato)
Very cool!

Parity Fun 13 (today, 06:12 by Freegerator)
Breezy, fun. Thanks!

The Climb (Renban, XV, Killer) (today, 05:01 by FireTruckFuel)
Congratulations on the CTC feature. I would have missed out otherwise.

Modular Fortress (today, 04:16 by Crusader175)
Fun puzzle!

My Big, Hard, Throbbing Kakuro (today, 03:37 by Justalilguy)
Thank you for setting this!

Sunblock (today, 03:28 by ThePhaeton)
Amazing puzzle, thanks for setting!

today, 09:34
NKSA W02: Ski Jump by Incurrsion

today, 09:34
Bigger Than Me by MartinR

today, 09:33
quadcopter by illegel

today, 09:32
Sandban 1 by stig

today, 09:31
Quick Quick Slow (6x6) by moss

today, 09:30
Papa Seahorse by ome86

today, 09:28
Turning Cog by macmillan333

today, 09:28
Modular Fortress by Bjd

today, 09:27
Not Helpful by moss

today, 09:27
Sparrow Bathing Spot (Nala’s Adventures #14) by y00j1n

Show complete list

Show complete list


52 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
jalebc (14), Exigus (11), kangaroo (9), moss (7), redgecko (7), werevovk (7), ome86 (6), asver (5), EmX68 (5), Grey (5), y00j1n (5), marcmees (4), Bjd (3), laky (3), macmillan333 (3), richardkchapman (3), alx (2), chesskudo (2), David-Bauman (2), Dendr (2), Densii2048 (2), Devil (2), godgamer2 (2), Kino (2), kmoter (2), MartinR (2), DrLort (1), ErnoWindt (1), Ftown778 (1), GWilliams00 (1), illegel (1), Incurrsion (1), marty_sears (1), SeamusOL (1), SeveNateNine (1), sorryimLate (1), stig (1), 72kchunshuai (0), Angara (0), daniel33535 (0), Ele705 (0), emwmasu (0), fppo (0), juggler (0), Klappa en ko (0), mediumok (0), PiMaster9 (0), seeppp (0), Silverscree (0), SudokuFan (0), totem_mapr (0), YanksJets (0)

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