SALT, WATER & A LITTLE INGENUITY
The Blue Current
Borrow the pull of salt. Bring every basin home.
Open a passage
One click = one unitMove a salt charm
Use the gold arrows to pass one charm along a pipe. Salt sets a basin’s pull: charms ÷ water.
Let water follow
The blue valve sends one water unit toward the stronger pull. Equal pulls, full basins, and the last water unit hold the flow.
Match both targets
Reach each basin’s water line and salt count. There’s no timer. Undo freely, or ask for a shortest-route nudge.
Field notes & credits
An original symbolic puzzle inspired by renewed interest in salinity-gradient energy, including October 2026 membrane research. These are playful discrete rules, not a physical model of the paper’s reverse-electrodialysis system.
Original code: MIT. Illustration generated with an OpenAI GPT image model and bundled locally. GitHub scientific reference: WaterTAP (120 stars, BSD-style license; maintained November 5, 2026). No upstream code or assets reused. Full credits & license.
Keyboard: 1–8 select an experiment; U undo; R restart; H nudge. Every passage also works with Tab and Enter. Progress stays on this device when browser storage is available.