River Crossing
River CrossingChallenge 1
Tap who goes in the boat, then tap Go! Never leave anyone alone with someone who would eat them.
🎯 Get everyone across the river in 1 trip!0 trips
This side
Far side 🏁
- Boat holds 3
- Only the farmer rows
- eats
For grown-ups
The classic river-crossing puzzles with friendly characters: a boat that holds only some of them, and some who cannot be left alone together (in the hardest ones, cats must never outnumber the mice on a bank). A trip that would leave someone in danger is shown but not made, and does not count. Every puzzle has a fewest-trips answer found by the program. It practises reasoning about constraints.