Solve logic grid puzzles similar to Einstein's famous zebra puzzle ("Who has the fish?") on your iPad, iPhone or Apple TV!



36 riddles:
• 15x easy (4 values per category)
• 6x medium (5 values per category)
• 15x hard (5 values per category)
• additional levelpacks available via in app purchase

3x3 Layouts:
• light
• coffee
• dark
each in the variants
• full/empty
• plus/minus
• check/cross

2 languages:
• german
• english

easy solving of riddles by tapping:
• tap once for "does not match"
• tap twice for "matches"

additional features:
• timer and Game Center support
• current state can be checked at any time
• solving table as assistance for a better overview (iPad only)

completely free of advertising!

compatible devices:
• iPhone 5 or newer
• iPad
• iPad Pro
• Apple TV 4
(requires iOS9/tvOS9 or higher)


If you like the app, please leave me a good review!

If you have questions, problems or suggestions, please contact me by email to

Follow me on Twitter: #luethslogicals

New riddles are in progress and coming soon!

What’s New

Version 6.0.6

• BUGFIX: puzzle E06 (clue 5 fixed)

If you like the app, feel free to add an app review. If you have problems or suggestions for improvement, please contact me by sending an e-mail to
I wish you a lot of fun while solving the new puzzles!

Ratings and Reviews

4.4 out of 5
48 Ratings

48 Ratings

Keishau ,

Fun and challenging

Great fun!

madmd75 ,

the hard is not hard

format is good, however

In-App Purchases

L07: Puzzle Pack Vol. 7 (15x)
E39-E42 • M37-M41 • H53-H58
X01: MegaPack Vol. 1 (60x)
contains all 60 puzzles of L01, L02, L03, L04
L01: PuzzlePack Vol. 1 (15x)
E16-E17 • M07-M11 • H16-H23
L02: PuzzlePack Vol. 2 (15x)
E18-E20 • M12-M16 • H24-H30
L03: PuzzlePack Vol. 3 (15x)
E21-E25 • M17-M21 • H31-H35
L04: PuzzlePack Vol. 4 (15x)
E26-E30 • M22-M26 • H36-H40


Christian Lueth
23.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch. Apple TV.


English, German

Age Rating
Rated 4+
© 2019 Christian Lüth
In-App Purchases
  1. X01: MegaPack Vol. 1 (60x) $6.99
  2. L01: PuzzlePack Vol. 1 (15x) $1.99
  3. L06: Puzzle Pack Vol. 6 (15x) $1.99


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like