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 34254 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 ABCD 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) Checkered Fillomino 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 Stostone 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
	Kropki Quadruple: Tutorial (1/4) by BlueToast001 (on 18. May 2026, 17:00)	205	79 %
	Quad V 4x4 by iceypop3444 (on 10. August 2025, 03:28)	715	72 %
	VariantDoku Daily Puzzle: May 25 by Brandy New (on 25. May 2026, 10:46)	106	73 %
	Day 9: Chess Sudoku by SharpFox (on 9. December 2025, 06:00)	560	77 %
	speedrun sudoku by Tis_Me_Alex_B (on 6. March 2024, 17:39)	1314	63 %

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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)	55	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)	41	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)	29	100 %

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The newest puzzles

	Description	solved	Rating
	Thermarrows [YYJ Pack] by yttrio (today, 01:00)	0	N/A
	The London Tube by GabeSzeto (today, 00:12)	0	N/A
	Comparing Greater Buses by FIT7Y (today, 00:00)	0	N/A
	Co-Prime Killers by Reaperskill (yesterday, 23:19)	1	N/A
	Uncovering Tunnels by Vythic (yesterday, 22:20)	1	N/A

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Latest

New comments	Last solved
Psst, I'm in the Loop (today, 01:21 by earthpuzzles) This was a very satisfying solve! The puzzle gradually revealed itself, each... Skewed Boxes with a smile (today, 01:10 by itsid) INdeed a nice puzzle, but the toroid thing makes for a very easy solve (usually... One arrow comes to the rescue (Anti-Knight Shading) (today, 00:49 by exalt) Fun solve, took about 2.5h, Interesting break and decently hard middle. Very... Beatific (today, 00:24 by itsid) I usually avoid arrow sudokus (I'm just not good at them) but I did one... Messy Regions (today, 00:03 by Guvenistan) After doing both "In or Out" puzzles I think I've gotten the handle of these... Dazed (today, 00:03 by marajade) Fascinating little puzzle; simple once I wrapped my brain around it but I... Slingshot Fillomino (today, 00:02 by cyddrdrd) Wow, that's insane... My eyes need some rest lol Super Sudokoid Dark Inversion (yesterday, 23:53 by Shentsi) This puzzle has so many times that make me re-realize, "oh I could do this!".... Four Slow Thermos (yesterday, 23:49 by Exigus) Great stuff. Thanks! Dazed (yesterday, 23:44 by Dantheman8urham) I don't like that you have to find the values of the digits to solve the puzzle	today, 01:25 Eye of the Storm by Jasperrr today, 01:24 Silent Sweeper by KyubiBoy today, 01:24 Mirrored Whispers by timww572 today, 01:23 a little circling back :O by Pioooooo today, 01:23 VariantDoku Daily Puzzle: May 29 by fuxia today, 01:22 Sudoku Variants Series (469) - Stardust by NCtide today, 01:22 6x6 Irregular Anti Knight 2 by josemadre today, 01:21 Echo Chamber by renewedrebirth today, 01:20 Escalator by turcoyhalea today, 01:20 The Return Journey by Randi <3
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