Game guide · 05MC
Your guide to Water Jug Puzzle
Use the controls beside the game rather than guessing the rules. 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.
Take a closer look while playing
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. Start a new round when you are ready to try again.
What counts as success
Check the rule below as you play. 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.
The steps to play
- 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.
Choosing and moving on screen
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.
See the idea in action
The board gives you the information needed for the next action. 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
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. The game area remains available above the explanation.
More answers before you play
When I start, 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.
During a round, 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. Scores here do not represent cash or prizes.
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. You can start a new round from the game controls.
On this page, which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. A new round resets the current 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. 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. A new round resets the current game.
For this game, 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.
For this game, can I stop a pour halfway?
No. The source must empty or the destination must fill. A new round resets the current game.
For this game, 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.
How many puzzles are included?
Six capacity-and-target combinations are selectable on the board. The game is played locally in your browser.
