About Deduza
Deduza brings four new logic puzzles every day, the same for everyone, in three levels: Easy, Medium and Hard. None needs guessing — every puzzle has exactly one solution reachable by deduction alone. It is free, with no sign-up, on your phone or computer. Every solved puzzle lights something up in your city, and you can challenge friends in a league or on the daily leaderboard.
- 🌌 Constellation — Find the stars and discover the constellation of the day.
- 🏢 Lights — Light the right windows and meet the building of the day.
- 🌆 Skyline — Find the height of every building and stroll down the street of the day.
- 🔦 Patrol — Find the suspects hiding in the streets with the help of the witnesses.