Play it · Ages 12–13
The Bridge at Night
One torch. Two at a time. Three challenges — each one changes what you have to do, not just how many of it there are. Nothing is timed and nothing is scored.
0 of 3 solved
Get all four across in 19 minutes.
The obvious plan works. Find it, then look at what it costs.
Get across
This side🔦
Far side
0 / 19 minA pair moves at the slower one's pace.
Ten minutes of stuck counts as the work.
Now do it away from the screen
The board is the warm-up. The year page has the same problem on paper, the hint ladder, the answer, the five-day week and three questions nobody can mark — which is where the twenty-five minutes actually go.