Game guide · VIP-QIE
Your guide to Water Jug Puzzle
Read the position before choosing your next action. Measure the target number of litres using two unmarked jugs and only filling, emptying and pouring. 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.
Build familiarity through play
The board gives you the information needed for the next action. A pour stops when the source is empty or the destination is full. It cannot stop at an arbitrary amount.
What you are aiming for
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. Start a new round when you are ready to try again.
Work through the instructions
- 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.
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. Start a new round when you are ready to try again.
See how the rules apply
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. The game area remains available above the explanation.
A mistake to avoid
The board gives you the information needed for the next 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.
Answers about the rules and controls
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. The game is played locally in your browser.
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.
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. A new round resets the current game.
When I start, which mistake should I avoid?
You cannot measure a partial fill directly. Only the allowed actions can create a quantity. The worked example offers another way to follow the rule.
During a round, 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. No download or player account is required.
On this page, how many people can play here?
Solo. This is local browser play, not internet matchmaking. The worked example offers another way to follow the rule.
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.
Can I stop a pour halfway?
No. The source must empty or the destination must fill. No download or player account is required.
On this page, 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.
For this game, how many puzzles are included?
Six capacity-and-target combinations are selectable on the board. Use the labelled controls for your next action.
