Game guide · XUEWEIBA
Follow the steps for 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. Keep the goal in mind before your next move. 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.
Practice beyond the first move
Take a moment to check the current turn. A pour stops when the source is empty or the destination is full. It cannot stop at an arbitrary amount. The game area remains available above the explanation.
What you need to achieve
Begin with the basic rule, then follow the result of your action. 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.
Step by step
- 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.
How to use the controls
A careful first move helps you understand the round. Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres. Try the rule on the board, then read the next instruction.
An example before you play
A careful first move helps you understand the round. 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.
An important reminder
Take a moment to check the current turn. You cannot measure a partial fill directly. Only the allowed actions can create a quantity. Keep the goal in mind before your next move.
Common questions
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.
When I start, 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. Use the labelled controls for your next action.
When I start, 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. The game is played locally in your browser.
For this game, which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. The controls work with mouse or touch.
For this game, 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. A new round resets the current game.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. Keep the current game state in view while applying this rule.
On this page, where must the target volume end up?
In either jug. The other jug may contain any legal amount. Scores here do not represent cash or prizes.
For this game, 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 worked example offers another way to follow the rule.
For this game, how many puzzles are included?
Six capacity-and-target combinations are selectable on the board. The controls work with mouse or touch.
