V0.346 · EXACT WATER MEASURING
Water Jug measure it exactly
Fill, empty and pour. Every target is solver-verified, and the minimum shown is the real shortest route.
PracticeMeasure —Fill · Empty · Pour
Exact puzzle1 shortest route
Moves0
Optimal left—
Time0:00
RunClean
PausedTimer and jug controls are frozen.
Tap a jug to select it. Tap another jug to pour.
Shortest path & exact review
Finish a puzzle or open review to see one exact shortest route from the starting state.
Local progress & recent solves
Progress
Recent solves
Perception & strategy Lab · optional
V0.216 · EXACT STATE-SPACE LAB
Water Jug Strategy Lab
Deep practice with exact BFS evidence, fixed benchmark sets, adaptive targeting and custom solvable setups.
How to play & exact rules
Three legal moves
Fill a jug completely, empty it completely, or pour until the source empties or the destination fills. A pour never stops halfway.
Minimum means minimum
The displayed target is computed by breadth-first search from the exact puzzle state. A current-state hint is recomputed after your moves.
Challenge changes the rules
Pour-only puzzles have no tap or drain. Total water is conserved, so every legal state has the same total amount.