Aquarium
Expert00:00
Classic0/4
0/3
0/3
0/3
0/3
0/3
0/2
0/3
0/2
0/2
0/2
0/2
0/1
0/12
0/12
0/7
0/0
0/0
0/0
0/0
0/0
0/0
0/0
0/0
Click to fill with water, click again to × mark it, click once more to clear.
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.