Aquarium
Medium
00:00
Classic
Medium Aquarium — what to expect
Medium Aquarium expands to 8×8 with 6 to 8 aquariums. The clue counts are less extreme, so you need forced-fill and forced-empty reasoning more often: when a row needs exactly N more cells and has N undecided spots, all of them must be water. Aquariums start sharing more rows and columns, which means decisions about one aquarium start affecting others.
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.