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LIER88

RULES & PRACTICE

How to Play River Crossing Puzzle

Play River Crossing Puzzle ↗

Game guide · LIER88

River Crossing Puzzle: how a round works

Read the position before choosing your next action. Carry the wolf, goat and cabbage across the river without leaving an unsafe pair unattended. Everyone starts on the near bank. The farmer rows and can take at most one passenger. Keep the goal in mind before your next move.

The classic single wolf–goat–cabbage puzzle, with one-passenger boat and seven-crossing optimal solution. No claim of a large level collection.

A focus for your next round

Take a moment to check the current turn. Cross alone or take someone on the same bank as the farmer. Unsafe crossings are rejected before the state changes. Try the rule on the board, then read the next instruction.

Your goal

Check the rule below as you play. Carry the wolf, goat and cabbage across the river without leaving an unsafe pair unattended. Try the rule on the board, then read the next instruction.

How to proceed

  1. Everyone starts on the near bank. The farmer rows and can take at most one passenger.
  2. The wolf cannot stay with the goat without the farmer. The goat cannot stay with the cabbage without the farmer.
  3. Cross alone or take someone on the same bank as the farmer. Unsafe crossings are rejected before the state changes.
  4. Bring all four across. Use Undo or Restart to explore another sequence.

Controls

A careful first move helps you understand the round. Choose Cross alone, Take Wolf, Take Goat or Take Cabbage. Buttons for passengers on the other bank are unavailable. Start a new round when you are ready to try again.

See the idea in action

The example and rules describe the same game you can play above. Taking the goat first leaves the wolf with the cabbage, which is safe. Taking the wolf first would leave the goat with the cabbage and is refused. Start a new round when you are ready to try again.

An important reminder

The example and rules describe the same game you can play above. The farmer sometimes must bring a passenger back. Only moving forward is not enough to solve the puzzle. Start a new round when you are ready to try again.

Common questions

For this game, what is the aim of River Crossing Puzzle?

Carry the wolf, goat and cabbage across the river without leaving an unsafe pair unattended. The game is played locally in your browser.

For this game, how do the controls work?

Choose Cross alone, Take Wolf, Take Goat or Take Cabbage. Buttons for passengers on the other bank are unavailable. Keep the current game state in view while applying this rule.

Can you show an example?

Taking the goat first leaves the wolf with the cabbage, which is safe. Taking the wolf first would leave the goat with the cabbage and is refused. A new round resets the current game.

When I start, which mistake should I avoid?

The farmer sometimes must bring a passenger back. Only moving forward is not enough to solve the puzzle. Use the labelled controls for your next action.

During a round, what rules and limits are used here?

The classic single wolf–goat–cabbage puzzle, with one-passenger boat and seven-crossing optimal solution. No claim of a large level collection. Keep the current game state in view while applying this rule.

During a round, how many people can play here?

Solo. This is local browser play, not internet matchmaking. The worked example offers another way to follow the rule.

For this game, can the farmer travel alone?

Yes. Cross alone moves only the farmer and boat to the opposite bank. Keep the current game state in view while applying this rule.

During a round, why was my crossing refused?

It would leave the wolf with the goat or the goat with the cabbage without the farmer. Scores here do not represent cash or prizes.

When I start, can I carry two passengers?

No. The boat holds the farmer and at most one passenger. The game is played locally in your browser.

On this page, how many crossings are needed?

The shortest solution uses seven crossings, including return trips. No download or player account is required.

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