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Deductive logic puzzles, no ads. Includes 10 puzzles to try before you buy.
Hard logic puzzles from Penny Dell magazines — just like the print experience, built for your phone and tablet. No ads, no distractions, play offline anywhere.
Try before you buy: 10 free puzzles with all features enabled. If you like them, more than 20 volumes are available, each with 30 unique puzzles for hours of brain training.
CHALLENGING & AUTHENTIC
These are real Penny Dell magazine logic problems — refreshingly difficult and idiosyncratic. Keep your mind sharp with stimulating puzzles that exercise your deductive reasoning skills.
BUILT FOR FOCUSED PLAY
No more erasing! Multi-level Undo and Auto-X let you focus on the logic. If you get stuck, erase errors, get a logical hint, or view the full hand-worked solution — just like the magazines.
WORKS ON ANY SCREEN
Zoom the grid to fit your device, from phone to tablet.
Looking for even harder puzzles with 7-cell grids? Try our Logic Grid Puzzles app with puzzles by Puzzle Baron.
Quality software by Egghead Games.
Email: [email protected]
Web: https://eggheadgames.com
All puzzles Copyright PennyDellPuzzles.com
What's New in the Latest Version 5.4.5
Last updated on Apr 10, 2026
- Board hints! 7 grid filling strategies to nudge you in the right direction when the puzzle fights back.
- Large puzzles now gently remind you about pinch-to-zoom. Just the once, we promise.
- Added group titles.
- Puzzle library scrolls smoother. Your thumb will thank us.
- Fixed a crash if your device accidentally rotated screens back and forth
- Stability improvements for older Android devices. We haven't forgotten you.
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HARD Penny Dell Logic Problems
5.4.5 by Egghead Games LLC
Apr 10, 2026