Click a tap to turn the handle.
Click a jug to attach the taps.
Hints
1. The pouring stops automatically if one of the jugs becomes full.
2. Always let the tap stop automatically to keep measurements precise.
3. The puzzle is solved when the 5L and 8L jugs each contain 4 liters of wine.
Solution
One solution is:
8 -> 5 (Pour as much as possible from the 8L jug into the 5L jug.)
5 -> 3
3 -> 8
5 -> 3
8 -> 5
5 -> 3
3 -> 8 (So the 8L and 5L jugs each contain 4 liters.)
Sources
1.
Abbot Albert wrote a version of this puzzle ~1240. [5]
2.
NiccolĂ˛ Fontana Tartaglia wrote a version of this puzzle in the 1500s. [4]
3.
In the film Die Hard With a Vengeance (1995), New York City Police Lieutenant John McClane (Bruce Willis) and
shopkeeper Zeus Carver (Samuel L. Jackson) team up and solve a version of this puzzle to stop a bomb from exploding.
4.
Professor Stewart's Hoard of Mathematical Treasures (2010), by Ian Stewart.
5.
Rediscovering Mathematics: You Do the Math (2011), by Shai Simonson.
Text Version
You have an 8 liter jug full of water, and two empty jugs which respectively hold 3 and 5 liters.
Measure precisely 4 liters of water by
pouring between the jugs.