Game guide · QWBEN
The essentials of playing Water Jug Puzzle
Take a moment to check the current turn. Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. Start a new round when you are ready to try again. Choose one of six capacity-and-target puzzles. Both jugs begin empty.
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
Begin with the basic rule, then follow the result of your action. 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.
The challenge in front of you
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. Start a new round when you are ready to try again.
A walkthrough of the rules
- 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.
Controls
Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres. Keep the goal in mind before your next move.
See how the rules apply
The example and rules describe the same game you can play above. 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. Try the rule on the board, then read the next instruction.
A useful caution
Read the position before choosing your next action. You cannot measure a partial fill directly. Only the allowed actions can create a quantity. Start a new round when you are ready to try again.
Questions about this game
When I start, what is the aim of Water Jug Puzzle?
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. The game is played locally in your browser.
During a round, 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. No download or player account is required.
On this page, 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. Keep the current game state in view while applying this rule.
Which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. The game is played locally in your browser.
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.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. Scores here do not represent cash or prizes.
For this game, where must the target volume end up?
In either jug. The other jug may contain any legal amount. The instructions above use these same rules.
On this page, can I stop a pour halfway?
No. The source must empty or the destination must fill. The game is played locally in your browser.
During a round, why is an action disabled?
It would not change the current jug contents, such as filling a full jug. The instructions above use these same rules.
How many puzzles are included?
Six capacity-and-target combinations are selectable on the board. The controls work with mouse or touch.
