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 30648 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.

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To help you getting started navigating the portal we have put together some puzzle collections.

Puzzle types	Puzzle collections	Puzzle 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 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

	Description	solved	Rating
	Rose Puzzle 1 by RailMan (on 13. June 2025, 15:45)	554	79 %
	Quad V 4x4 by iceypop3444 (on 10. August 2025, 03:28)	352	73 %
	Look At What You're Saying by PhoenixAki (on 9. April 2025, 10:04)	606	77 %
	speedrun sudoku by Tis_Me_Alex_B (on 6. March 2024, 17:39)	1078	63 %
	Speedy logic by Azure (on 6. April 2025, 12:24)	560	72 %

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The most beautiful puzzles

	Description	solved	Rating
	Wichtel 2016 (2): Erfahrener Höhlenforscher gesucht by wichtel (on 20. April 2017, 11:02)	51	100 %
	Die Kryptos - S02E06: Summenbild Rundweg / Sudoku by tuace (on 16. March 2018, 15:10)	41	100 %
	Japanische Höhle mit Irrwisch von den Außerirdischen (2) by ibag (on 20. April 2018, 00:00)	40	100 %
	Glückwünsche vom Orion by Statistica (on 9. July 2019, 00:55)	25	100 %
	Adventskalender 2020, Finale - Riesenrundweg by Zzzyxas (on 1. December 2020, 07:00)	27	100 %

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The newest puzzles

	Description	solved	Rating
	Smelly Peas by MathGuy_12 (today, 01:43)	1	N/A
	Key Set by RandyDan (today, 01:39)	5	N/A
	Snowflake in the Fog by fogpictures (yesterday, 23:53)	20	N/A
	Six Hit Wonder by marty_sears (yesterday, 23:41)	12	N/A
	Autumn Tree by Cyprane (yesterday, 22:23)	9	N/A

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Latest

New comments	Last solved
The Return of Crystallization (today, 05:50 by SennyK) Great puzzle, thank you! Cheryl's Sudoku (today, 05:13 by eap314) Reading the wiki first makes this puzzle a lot easier. Thank you for providing... Sudokuvania: Digits of Despair (v1.1.1) (today, 04:29 by yknn) This project is insane!!! Loads of challenging puzzles and fascinating lore... What are the odds? (Parity killer/little killer) (today, 04:19 by MysticMan) This is definitely trickier than the previous one. Lovely puzzle! February (Killer sudoku) (today, 03:43 by tallcat) An outstanding and approachable killer sudoku! Snowflake in the Fog (today, 02:41 by RussKozerski) Not the easiest break-in for a 1-star puzzle. But very enjoyable. Thank you. Foggy Winter Wonderland (today, 02:34 by fishsaltyak) Dark blue line makes pencil marks very hard to read Ouroboros (today, 01:47 by Zarlino) Seemed a fairly straightforward 1* to me (time 10'02" with very little... Intensity (today, 01:47 by dzamie) Interesting concept. The intensity constraint is useful primarily for larger... Zippows (today, 01:01 by Lenivaya_Joppa) Thank you for this nice puzzle, dear sujoyku! :)	today, 06:32 Clueless Sudoku 12 by ordnanceordinance today, 06:31 Escape the Foggy Liar by oyyq99999 today, 06:29 Herniated Ring-2 by doomedmageknight today, 06:29 6x6 Pack: Loopy Adventres by Tuanzi today, 06:27 Autumn Tree by jalebc today, 06:27 Foggy Winter Wonderland by jkuo7 today, 06:27 Dutch Flat Mates: Periodic Sums (with sujoyku) by brimmy today, 06:26 Magic Matryoshka by SumDumThum today, 06:24 Easy Doubles, Thermo Renban by MTFlowCzq today, 06:23 6x6 Anti and Consecutive Knights by JPlay
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