Logic Masters Deutschland e.V.

The Puzzle Portal

The puzzle portal is a collection of puzzles created by puzzle enthusiasts from all over the world. At the moment the portal contains 7087 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

3d Abctje Akari Anti-Knight Anti-king Antiknight Arithmetics Arrow Arrow Sudoku As easy as Battleships Beginner Big Buchstabenrätsel Chaos Construction Chess Close of the mark Coloring Consecutive Coral Crypto Diagonal Disjoint Groups Divided Dividing Domino Doppelblock English Fences Filling Fillomino Generated with computer German Hashiwokakero Hexagonal Heyawake Hint Hitori Hochhausblöcke Höhle Inseln Irregular Japanese sums Jigsaw Kakuro Killer Killer Sudoku Killer-Sudoku Killersudoku Knowledge Kombination Kropki Kropki Sudoku Little Killer Little Killer Sudoku Magic Square Magnets Masterword Masyu Math Mehrdeutig Meta Minesweeper Mystery Nonconsecutive Odd/Even Palindrome Parity Parity Party Paths Pentomino Pfeile Placing Roller Coaster Sandwich Sandwich Sudoku Secret code Sequence Skyscrapers Small Snake Standard puzzle Starbattle Subway Sudoku Tapa Tents Thermo Thermo Sudoku Thermometer Toroidial Variant XV Yajilin Yin-Yang clone mit Computerhilfe neuartig toroidal 2358

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

unsolvedXikaku für Anfänger
by hopppe (on 14. May 2010, 11:00)
60 %
unsolved红葉puzzles(PP74): Hashiwokakero001
by cdwg2000 (on 24. February 2021, 09:11)
73 %
unsolvedHashiwokakero für Anfänger (1)
by berni (on 10. December 2008, 13:38)
70 %
unsolvedAnti knight Sudoku
by MavericksJD (on 18. June 2020, 13:14)
50 %
by RobertBe (on 1. December 2009, 10:53)
67 %

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The most beautiful puzzles

unsolvedRundweg Family Photo
by pokerke (on 14. February 2011, 00:57)
100 %
by tuace (on 13. April 2015, 00:47)
100 %
unsolvedNeue Post vom Außerirdischen
by ibag (on 6. September 2015, 00:00)
100 %
unsolvedWichtel 2016 (2): Erfahrener Höhlenforscher gesucht
by wichtel (on 20. April 2017, 11:02)
100 %
unsolvedAdventsportale, Teil 4
by pirx (on 23. December 2018, 12:00)
100 %

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The newest puzzles

newLittle Killer Rellik
by beesquestionmark (yesterday, 21:59)
newMathRocks Sudoku
by mandourin (yesterday, 21:25)
by PetLov (yesterday, 21:03)
newÜbungsrätsel LM-Quali 2021: Magnetschlange II
by lupo (yesterday, 20:21)
by Polycarp (yesterday, 18:44)

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New commentsLast solved

Norinori Killer Sudoku (today, 00:42 by Aspartagcus)
@SudokuExplorer: I didn't mean another nori nori sudoku, you can go for some...

ᚦᚢᚱ (Palindrome + little killer sudoku) (today, 00:33 by Aspartagcus)
@henter: Thanks! :) It's my answer to the question "For how long can one keep...

Snowflake (yesterday, 22:52 by Johannes Quack)
Sehr schön!

Übungsrätsel LM-Quali 2021: Magnetschlange II (yesterday, 22:03 by ibag)
Danke für die schöne Serie! Hoffentlich kannst du bald mal wieder...

5V DC (yesterday, 21:30 by Pr0gm4n)
Das tut mir Leid Rollo, ich sehe die Zweideutigkeit im Text aber nicht gegeben....

Mama Python 3 (Thermo Snake Sudoku) (yesterday, 21:12 by marcmees)
the location of mama snake could easily be deduced ... after that followed nice...

Hidden Arrows (yesterday, 19:23 by FryTheGuy)
Added details for how the uniqueness rule is intended to be used to solve the...

Dancing Koala (yesterday, 18:59 by Orpheus)
This was fun. I don't think your need the 20 clue, and I bet you could find a...

Teleportation Cycle Sum Sudoku (2) (yesterday, 18:23 by henrypijames)
I find this one just as difficult as the first one, which means it's actually...

5V DC (yesterday, 18:18 by Rollo)
Aus dem Text geht nicht hervor, dass r2c2 > r2c3 sein soll. Das ist schlecht...

today, 00:55
Symmetry? by amirbeirat

today, 00:47
Even or odd thermo by beesquestionmark

today, 00:46
Gotta Crack 'Em All by KlausRG

today, 00:42
Equal Diagonal Sums by michaal94

today, 00:38
Red Herring (Japanese Sums Sudoku) by Bobby

today, 00:36
9-cage Killer Sudoku by Mutiny

today, 00:35
Among Us (Red) / Unter uns (rot) by Nusi

today, 00:33
Sudoku Variants Series (029) - Clone by CJK

today, 00:32
KnightVision by kalumtum

today, 00:31
Double or Nothing by geronimo92

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15 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
Arka Badarka (4), amirbeirat (3), brandon_bot (1), LuckyNumber8 (1), Alca05 (0), Aspartagcus (0), athin (0), emmettcito (0), juventino188 (0), Kafkapharnaum (0), Megy (0), opkid (0), Puffke (0), Ragna (0), Woodsy (0)