Looking along 2 4 1 3 from the left, you see the 2 and the 4 - the 1 and 3 hide behind the 4 - so the clue is 2.
Logical Reasoning2 min read
How to play Skyscrapers
Fill the grid with buildings of heights 1 to N, each height once in every row and column. The numbers round the edge say how many buildings you can see from there.
Goal
Fill every square so that every row, column and edge number is right. Each puzzle has one answer.
How to play
- A taller building hides every shorter one behind it, looking along the line from that edge.
- Select a square, then press a number (or tap one below the grid). Erase or Backspace clears it.
- A repeated height turns red; a finished line turns its clue green if it's right and red if not.
- The grid is 4×4 on Easy, 5×5 on Medium and Hard, and 6×6 on Expert, with fewer clues as you go up.
Example
Keyboard
| Keys | What it does |
|---|---|
| 1–6 | Place a height |
| Backspace | Clear the square |
| ←↑→↓ | Move between squares |
Tips
- A clue of 1 means the tallest building is right next to it; a clue of N means the line climbs 1, 2, 3… from that edge.
- Next to a clue of c, a building is at most N − c + 1 tall.
- On Easy and Medium, a hint fills the selected square.
Scoring
- Every correct answer is worth 100 points, scaled by difficulty (Easy ×0.8, Medium ×1, Hard ×1.3, Expert ×1.6).
- Answering within 3 seconds adds a 25-point speed bonus.
- Each answer in a row adds a 15-point streak bonus, up to 10 in a row.
- Using a hint halves the points for that answer and skips the bonuses. Hints are only available on Easy and Medium.
- Your score, streak and achievements are saved to your account when the game ends.
Modes
Classic
A fixed number of rounds, then a results screen.
Endless
Keep playing until you press Quit.
Time Attack
Fit in as many rounds as you can before the clock runs out.
Survival
Play until you run out of lives or make the game-ending mistake.