Game guide · SYXDBZ
Water Jug Puzzle: a guide for your next round
Check the rule below as you play. Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. The game area remains available above the explanation. 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.
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. Start a new round when you are ready to try again.
Your goal
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. Start a new round when you are ready to try again.
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.
Making selections and moves
Take a moment to check the current turn. 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.
Learn from a sample situation
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.
A common point of confusion
Use the controls beside the game rather than guessing the rules. You cannot measure a partial fill directly. Only the allowed actions can create a quantity. The game area remains available above the explanation.
Read these answers for extra help
During a round, 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 worked example offers another way to follow the rule.
For this game, 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. The controls work with mouse or touch.
During a round, 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.
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.
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. Use the labelled controls for your next action.
How many people can play here?
Solo. This is local browser play, not internet matchmaking. You can start a new round from the game controls.
On this page, where must the target volume end up?
In either jug. The other jug may contain any legal amount. The controls work with mouse or touch.
When I start, can I stop a pour halfway?
No. The source must empty or the destination must fill. No download or player account is required.
When I start, why is an action disabled?
It would not change the current jug contents, such as filling a full jug. The game is played locally in your browser.
When I start, how many puzzles are included?
Six capacity-and-target combinations are selectable on the board. A new round resets the current game.
