Aquarium
Expert
00:00
Classic
Expert Aquarium — what to expect
Expert Aquarium uses 12×12 grids with up to 16 aquariums spread across 144 cells. Cross-constraint analysis is the main technique: setting a water level in one aquarium affects the available counts in its rows and columns, which constrains the possible levels of neighboring aquariums. Multi-step chains of this reasoning are the norm.
How to play Aquarium
- The grid is divided into tanks. Pour water into them.
- Water settles level: inside one tank it fills from the bottom up, never leaving a gap.
- So if a cell holds water, every cell of that tank below it holds water too.
- The number beside each row and above each column counts its filled cells.
- A 0 means that line stays completely dry. A number equal to the line length means it all fills.
- Every puzzle has one solution, reachable by logic alone.