Game guide · SHOUJIKON
The Water Jug Puzzle playbook
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. Try the rule on the board, then read the next instruction. 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.
Give this approach a try
Keep the goal in view while choosing a move. A pour stops when the source is empty or the destination is full. It cannot stop at an arbitrary amount.
Understand the aim
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.
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.
How to interact with the game
A careful first move helps you understand the round. Use Fill A, Fill B, Empty A, Empty B, Pour A → B and Pour B → A. The display shows current and maximum litres.
A closer look at one example
Read the position before choosing your 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.
A common point of confusion
Take a moment to check the current turn. You cannot measure a partial fill directly. Only the allowed actions can create a quantity.
Clarifying the way this game works
For this game, 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 controls work with mouse or touch.
When I start, 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. No download or player account is required.
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. No download or player account is required.
On this page, 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.
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. The instructions above use these same rules.
When I start, how many people can play here?
Solo. This is local browser play, not internet matchmaking. No download or player account is required.
During a round, where must the target volume end up?
In either jug. The other jug may contain any legal amount. The instructions above use these same rules.
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.
For this game, 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.
For this game, how many puzzles are included?
Six capacity-and-target combinations are selectable on the board. The game is played locally in your browser.
