Game guide · KSZXDJJ
An introduction to playing Water Jug Puzzle
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. Choose one of six capacity-and-target puzzles. Both jugs begin empty. Try the rule on the board, then read the next instruction.
Six verified solvable capacity puzzles, with undo and move count. These are six levels of one game, not six separate games.
Give this approach a try
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.
The objective of a round
A careful first move helps you understand the round. Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. The game area remains available above the explanation.
The playing sequence
- 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.
Keyboard and screen controls
Begin with the basic rule, then follow the result of your action. Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres. The game area remains available above the explanation.
An example to follow
Check the rule below as you play. 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. Start a new round when you are ready to try again.
One detail worth checking
Begin with the basic rule, then follow the result of your 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.
A few questions answered
On this page, what is the aim of Water Jug Puzzle?
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. No download or player account is required.
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. Keep the current game state in view while applying this rule.
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. Scores here do not represent cash or prizes.
On this page, which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. Use the labelled controls for your next action.
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. Scores here do not represent cash or prizes.
For this game, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The game is played locally in your browser.
On this page, where must the target volume end up?
In either jug. The other jug may contain any legal amount. No download or player account is required.
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.
On this page, 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 instructions above use these same rules.
