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 29696 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) 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 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
unsolvedRose Puzzle 1
by RailMan (on 13. June 2025, 15:45)
4301
79 %
unsolvedLook At What You're Saying
by PhoenixAki (on 9. April 2025, 10:04)
5251
76 %
unsolvedQuad V 4x4
by iceypop3444 (on 10. August 2025, 03:28)
2461
73 %
unsolvedThe Trio
by FlxCat (on 4. September 2025, 18:57)
1181
57 %
unsolvedSpeedy logic
by Azure (on 6. April 2025, 12:24)
4981
70 %

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The most beautiful puzzles

DescriptionsolvedRating
unsolvedRundweg Family Photo
by pokerke (on 14. February 2011, 00:57)
825
100 %
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
503
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 %

Show complete list

The newest puzzles

DescriptionsolvedRating
newDutch Flat Mates (Tessellation)
by aqjhs (today, 01:59)
33
N/A
newXOV to Cheyenne
by The Bard (today, 01:01)
24
N/A
new[PAC] Masyu Masyu Yin Yin Yang Yang
by yttrio (today, 01:00)
23
N/A
new1y + 8b = 9g (Arrow Snackdoku)
by ivaylagergova (today, 00:40)
121
N/A
newMaximize The Maximizable
by Yann (yesterday, 21:41)
15
N/A

Show complete list

Latest

New commentsLast solved

[PAC] Masyu Masyu Yin Yin Yang Yang (today, 02:47 by Agent)
A smooth solve and very cool interactions between the rules!

Visible Arrows 4 (today, 02:06 by Mittag)
beautiful

Loopy Circles (today, 01:47 by ThePedallingPianist)
I was feeling so smug when I got the break-in within 5 minutes, but the puzzle...

Crazy Green Fun (today, 01:34 by Zarlino)
Very ingenious: thank you!

Chaconopia Snack (5x5 Chaos Construction) (today, 01:09 by dzamie)
Neat. Tricky to remember the roles. I'm glad this is only a 5x5, anything...

Whispering Bubbles (today, 01:00 by ViKingPrime)
Very nice break-in, loved it.

Split Points (by gdc?) (today, 00:48 by Gnubeutel)
You missed a chance to use a 10 digit solution code.

Doppeldinger (today, 00:43 by eladv)
Thank you TPP! This was a really cool puzzle! It took me a long time to solve,...

The Laws of Nature Shattered (today, 00:35 by VitP)
regarding the difficulty rating:
you need to understand the counting squares...

Going Round in Circles (today, 00:33 by sujoyku)
Thank you for this fun puzzle, Phil!

today, 03:12
Deeper Motion (Antiknight Region Sum Lines) by H.I. McDunnough

today, 03:11
Exclusive Internal Skyscraper Loop by TitaniaLowe

today, 03:09
Broken Two (with FastSandals) by 5381

today, 03:08
6x6 Irregular Kropki by RussKozerski

today, 03:07
1y + 8b = 9g (Arrow Snackdoku) by maniacaljackal

today, 03:03
This FOG is not a Killer GAS by thebriskt

today, 03:03
Dutch Flat Mates (Tessellation) by GorgeousNicko

today, 03:01
La Mer by widjo

today, 03:01
Powers of Two by RussKozerski

today, 03:00
Dutch Flat Mates (Tessellation) by josh_johnson

Show complete list

Show complete list


36 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
5381 (27), m_and_m_toastie (8), Agent (5), RussKozerski (4), TitaniaLowe (4), widjo (4), GorgeousNicko (3), Md88keys (3), Phandor (3), dorverbin (2), gxorgx (2), H.I. McDunnough (2), maniacaljackal (2), richliaofs (2), thebriskt (2), Calvinball (1), D00m (1), josh_johnson (1), lovely7998 (1), macintux (1), Markos95 (1), Neumino (1), scm808 (1), tetchytomcat (1), Zaragan (1), Blobz (0), CortexVortex (0), Cypher (0), Douglass (0), Imagio (0), juddimal (0), likesbeingwarm  (0), marloweml (0), Novi (0), The Bard (0), timotab (0)

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