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 4726 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 3d Abctje Akari Anti-Knight Aquarium Arithmetics As easy as Battlefield Battleships Beginner Big Buchstabenrätsel Chess Close of the mark Coloring Coral Crypto Diagonal Divided Dividing Domino Doppelblock English Fences Filling Fillomino Generated with computer German Hakyuu Hashiwokakero Hexagonal Heyawake Hint Hitori Hochhausblöcke Höhle Inseln Japanese sums Kakuro Kerzen Killer Killer Sudoku Killersudoku Knowledge Kombination Kropki LITS Laser Little Killer Logelei - Logical Logical Magic Square Magic spiral Magnets Masterword Masyu Math Mehrdeutig Meta Minesweeper Mystery New type Nonogramms Parity Parity Party Paths Pentomino Placing Pyramidpuzzle Sandwich Sandwich Sudoku Secret code Sequence Skyscrapers Small Snake Standard puzzle Starbattle Stations Subway Sudoku Tapa Team Tents Thermo Thermometer Toroidial Variables Tapasyu Variant With help of a computer X-Sudoku Yajilin Yin-Yang word puzzle 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)
61 %
unsolvedAnti knight Sudoku
by MavericksJD (on 18. June 2020, 13:14)
51 %
unsolvedHashiwokakero für Anfänger (1)
by berni (on 10. December 2008, 13:38)
70 %
unsolvedMehrdeutige Rätsel - Dominosuche A
by lupo (on 1. April 2017, 14:14)
64 %
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

new666 Sudoku
by Stavros96 (today, 03:48)
newPrimescraper Sudoku
by SenatorGronk (today, 03:46)
newKlein Bottle Magic Square Puzzle
by cam (today, 02:58)
newShattered Uncertainty - Thermo or Palindrome?
by hamslice (today, 02:06)
newSudoku Variants Series (280) - Odd Pentominos Sudoku
by Richard (today, 00:00)

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New commentsLast solved

XY-Differences III (today, 03:31 by Willy Wonka)
Very challenging indeed! Well deserved rating, very rewarding to complete! One...

Klein Bottle Magic Square Puzzle (today, 03:29 by cam)
The magic squares contain the numbers 1 through 9 exactly once

Shattered Uncertainty - Thermo or Palindrome? (today, 02:42 by hamslice)
Added Link :)

Sudoku Variants Series (280) - Odd Pentominos Sudoku (today, 00:46 by Jesper)
That was a lot of fun! Thanks for another great SVS puzzle.

Mystery Killer Twins (6x6 Sudoku) (today, 00:26 by SudokuExplorer)
Clarified cage sum of killer twin cages.

Sudoku Variants Series (280) - Odd Pentominos Sudoku (today, 00:21 by Voyager)
Nur zur Kenntnisnahme: damit sind im Portal (wieder mal ?) 15 Sudokus direkt...

Mystery Killer Twins (6x6 Sudoku) (today, 00:18 by SudokuExplorer)
@aneoid I'm pleased you enjoyed the logic and had fun :-)
@Luigi Thanks for...

6x6 Impressed Arrows Sudoku (yesterday, 23:58 by horanayru)
I haven't seen anything like this before. I honestly spent more time figuring...

Quadruple X Sudoku (yesterday, 23:17 by glum_hippo)
Quite rewarding!!

Classic Thermo (yesterday, 23:12 by JonnyKaufman)
Great coffee break thermo puzzle. Thanks!

today, 03:48
Sudoku Variants Series (280) - Odd Pentominos Sudoku by Greg

today, 03:48
Multiplied Dominos by wenchang

today, 03:46
Puzzle Alphabet Warm-Up (4/4): Doppelstern by athin

today, 03:41
Klein Bottle Magic Square Puzzle by Greg

today, 03:29
Sudoku Variants Series (280) - Odd Pentominos Sudoku by Senior

today, 03:28
6x6 (mod 5) Sudoku by geronimo92

today, 03:28
XY-Differences III by Willy Wonka

today, 03:02
Nonconsecutive Thermo Sudoku #2 by Imperial Marcher

today, 02:55
5 Hidden Thermos by Nylimb

today, 02:32
Disjoint Group Thermo Sudoku by Imperial Marcher

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15 users were active in the last 15 minutes (number of solved puzzles in the last 24 hours in brackets):
athin (6), Greg (3), aneoid (2), glum_hippo (2), SenatorGronk (2), Joo M.Y (1), wenchang (1), Big Tiger (0), disgruntled_vet (0), jackisaacbryan (0), meifert008 (0), Narayana (0), noisyjamb (0), Quarterthru (0), Stavros96 (0)