Game guide · CQMELISSA
An introduction to playing Water Jug Puzzle
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. Keep the goal in mind before your next move. 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.
Bring this focus to a round
A careful first move helps you understand the round. A pour stops when the source is empty or the destination is full. It cannot stop at an arbitrary amount. Keep the goal in mind before your next move.
Your objective
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. Keep the goal in mind before your next move.
Start here and follow along
- 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
Keep the goal in view while choosing a move. Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres.
An example to follow
Keep the goal in view while choosing a move. 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 this in mind
The example and rules describe the same game you can play above. You cannot measure a partial fill directly. Only the allowed actions can create a quantity.
If you are unsure
What is the aim of Water Jug Puzzle?
Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. You can start a new round from the game controls.
On this page, 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. A new round resets the current game.
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. The worked example offers another way to follow the rule.
Which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. Keep the current game state in view while applying this rule.
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.
On this page, 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.
On this page, can I stop a pour halfway?
No. The source must empty or the destination must fill. Keep the current game state in view while applying this rule.
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.
How many puzzles are included?
Six capacity-and-target combinations are selectable on the board. Keep the current game state in view while applying this rule.
