Game guide · 2COU99BJ
Getting started with Water Jug Puzzle
Keep the goal in view while choosing a move. 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.
Take a closer look while playing
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 goal to keep in mind
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. The game area remains available above the explanation.
How a round unfolds
- 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 your actions work
Read the position before choosing your next action. 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.
Follow the 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 area remains available above the explanation.
Notice this detail
Keep the goal in view while choosing a move. You cannot measure a partial fill directly. Only the allowed actions can create a quantity. The game area remains available above the explanation.
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.
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 worked example offers another way to follow the rule.
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. A new round resets the current game.
On this page, 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. Scores here do not represent cash or prizes.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. No download or player account is required.
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.
During a round, 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.
Why is an action disabled?
It would not change the current jug contents, such as filling a full jug. Use the labelled controls for your next action.
For this game, how many puzzles are included?
Six capacity-and-target combinations are selectable on the board. The instructions above use these same rules.
