Bank Shot
Find the one angle that bounces the marble off the walls and into the bell. You only see the first stretch of its path, so think it through. Three marbles a day.
Polishing today's marbles…
How to play
- Aim the launcher by dragging on the board, typing an angle, or nudging it a degree or a tenth at a time.
- Only the first straight stretch of the shot is shown. The marble then bounces off walls and the edges of the board.
- Angle in equals angle out: work out where each bounce sends it, then fire.
- You have three marbles. A missed shot leaves its path on the board so you can correct your aim.
Questions
When does a new puzzle come out?
Every day at midnight in your time zone. Everyone gets the same puzzle on the same date.
How exact does my angle need to be?
Angles go in tenths of a degree. Every puzzle has a range of winning angles at least seven tenths wide, so careful reasoning gets there.
How many bounces does the marble make?
Up to four. After the fourth bounce it rolls to the next wall and stops.
Do I need an account?
No. Your results and your streak are saved in this browser.
Are puzzles harder on some days?
Yes. Early in the week one bounce does it. By Sunday the bell needs three bounces and the winning range is narrow.