Game guide · GZZXY
Learn the rules of Water Jug Puzzle
The board gives you the information needed for the next action. Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. Choose one of six capacity-and-target puzzles. Both jugs begin empty. Keep the goal in mind before your next move.
Six verified solvable capacity puzzles, with undo and move count. These are six levels of one game, not six separate games.
Try a more deliberate round
Keep the goal in view while choosing a move. A pour stops when the source is empty or the destination is full. It cannot stop at an arbitrary amount. Try the rule on the board, then read the next instruction.
Aim for this result
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. Try the rule on the board, then read the next instruction.
Follow these playing steps
- Choose one of six capacity-and-target puzzles. Both jugs begin empty.
- Fill a jug to its capacity, empty it completely, or pour from one jug into the other.
- A pour stops when the source is empty or the destination is full. It cannot stop at an arbitrary amount.
- Reach the target quantity in either jug. Undo lets you try another route.
Input guidance
Keep the goal in view while choosing a move. Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres.
A useful example
Take a moment to check the current turn. With 3- and 5-litre jugs, fill the 5-litre jug and pour into the 3-litre jug. The 5-litre jug now contains 2 litres. Keep the goal in mind before your next move.
A useful caution
Check the rule below as you play. You cannot measure a partial fill directly. Only the allowed actions can create a quantity. Keep the goal in mind before your next move.
Read these answers for extra help
What is the aim of Water Jug Puzzle?
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. Keep the current game state in view while applying this rule.
On this page, how do the controls work?
Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres. You can start a new round from the game controls.
For this game, can you show an example?
With 3- and 5-litre jugs, fill the 5-litre jug and pour into the 3-litre jug. The 5-litre jug now contains 2 litres. Use the labelled controls for your next action.
For this game, which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. Scores here do not represent cash or prizes.
When I start, what rules and limits are used here?
Six verified solvable capacity puzzles, with undo and move count. These are six levels of one game, not six separate games. You can start a new round from the game controls.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The controls work with mouse or touch.
Where must the target volume end up?
In either jug. The other jug may contain any legal amount. Keep the current game state in view while applying this rule.
For this game, can I stop a pour halfway?
No. The source must empty or the destination must fill. You can start a new round from the game controls.
During a round, why is an action disabled?
It would not change the current jug contents, such as filling a full jug. You can start a new round from the game controls.
During a round, how many puzzles are included?
Six capacity-and-target combinations are selectable on the board. The worked example offers another way to follow the rule.
