puzzlerplaza
What is Ubahndoku?
Ubahndoku is a daily web puzzle built around the Berlin U-Bahn network. You get a 3x3 grid where each row and column carries a criterion, typically a U-Bahn line. Your task is to fill all nine cells with station names, and every station you enter must satisfy the criteria of both its row and its column. A station can only be used once per game, so each of the nine cells needs a different answer. The same puzzle is released for all players each day, and you can choose between Normal mode, which shows how many possible answers exist for a cell and offers suggestions, and Expert mode, where you must recall station names entirely on your own. You are allowed up to three mistakes per game, and scoring runs from 0 to 900, combining correctness with originality: rarer answers earn more points. If you get stuck, you can give up and view the solutions.
How Ubahndoku works
- Goal
Fill all nine cells of a 3x3 grid with distinct Berlin U-Bahn stations that satisfy each row and column's criteria.
- Your moves
- Select a grid cell
- Enter a station name matching the row and column criteria
- Choose between Normal and Expert mode
- Give up and view the solutions
- Reading the feedback
- Possible answer counts and suggestions
- In Normal mode, this shows how many valid stations fit a cell and helps you narrow choices.
- Error count
- Tracks your mistakes against the maximum of 3 per game; each one costs 20 points.
- Score
- Ranges from 0 to 900, combining a fixed bonus for correct answers with originality points for rare picks.
- When a round ends
You win by filling all nine cells correctly within the three-mistake limit; you can also give up to view the solutions. A new identical-for-everyone puzzle arrives daily, and archive puzzles are bonus games.
Your first round
- Choose Normal or Expert mode to begin the daily puzzle.
- Read the row and column criteria on the 3x3 grid, noting which U-Bahn lines each requires.
- Select a cell and enter a station where the relevant lines directly stop, avoiding transfers-only stations.
- Check that you have not already used that station in this game, since repeats are not allowed.
- Continue until all nine cells are filled correctly, keeping your mistake count under the limit of 3.
Easy to miss
- Line criteria count only stations where the line directly stops, not via transfers.
- A station cannot be reused within the same game, so all nine answers must be different.
- Each mistake costs 20 points, and three errors is the maximum per game.
- Originality points reward stations that few other players chose, so common answers score less.
Is Ubahndoku for you?
- You know the Berlin U-Bahn network and enjoy recall-based grid puzzles
- You like daily games with competitive scoring and originality bonuses
- You want a harder mode that tests free recall of station names
- You have little familiarity with Berlin U-Bahn stations and lines
- You prefer puzzles without a mistake limit or point penalties
Ubahndoku compared with similar games
Swipe sideways to see all 4 games.
| Detail | Ubahndoku | Zonday | MusicVidle | Satle |
|---|---|---|---|---|
| You find | Berlin U-Bahn stations | an Amazon product's price | a song title | a city |
| You work from | Row and column line criteria | hot/cold feedback and product details | still frames from the music video | satellite imagery, direction and distance |
| Attempts | 3 mistakes per game | 6 guesses | Up to 6 images revealed | 6 tries |
| New puzzles | New puzzle daily | New puzzle daily | Daily format | New puzzle daily |
| Access | Free | Free | Free | Free |
Ubahndoku FAQ
Is Ubahndoku free to play?
Yes, the game is free and runs in the web browser.
How many mistakes am I allowed in Ubahndoku?
You can make a maximum of 3 mistakes per game. Each error costs 20 points, and three wrong answers is the limit.
When does a new Ubahndoku puzzle appear?
A new daily puzzle is released that is identical for all players. Past puzzles remain available in the archive as bonus games.
Do archive puzzles affect my daily streak?
No. Archive puzzles are bonus games and do not affect the daily streak.
What is the difference between Normal and Expert mode?
Normal mode shows the number of possible answers for a cell and offers suggestions. Expert mode removes that help and requires you to recall station names on your own.
How does the scoring work?
Correct answers earn a fixed bonus plus originality points based on how rarely other players chose the same station. Each error costs 20 points, and scores range from 0 to 900.
Source checked 14 Oct 2026. This guide is based on the game's published rules. How we check guides · Official game
