Outbreak — free browser game

You're looking at a 7×7 neighborhood and a small outbreak has just started. Each click costs you a day: clicking a healthy cell turns it into a quarantine wall — the disease can't cross it, but the cell will never be active again either; clicking an infected cell cures it — it becomes immune and the disease can't spread through it anymore. Quarantined and cured cells cannot be infected, but they only block the spread by being clicked. After every click the disease takes one step forward: each remaining infected cell tries to infect each of its four orthogonal healthy neighbors with a fixed probability. Goal: leave zero infected cells on the board. If the infection count crosses the threshold first, the outbreak runs out of control. Your score is the number of cells still alive — healthy + quarantined + cured — when the round ends; the faster you stop it, the higher you score. Tip: don't rush to cure — often a quarantine wall in the spread direction saves more cells than curing the source. Corner infections are weaker (2 neighbors), center ones are dangerous (4 neighbors). Quarantines are permanent; every move counts.