Zombie Fence

Build fences with inequalities. Every survivor goes inside the safe zone, every zombie stays out.

Survivor Zombie Solid: line is safe (≤, ≥) Dashed: line not safe (<, >)

Fences built

Survivors Zombies

How to play

Each fence is an inequality in the form y ? mx + b. Type the slope and y-intercept as fractions; put 1 on the bottom for whole numbers.
> or ≥ makes the safe zone above the line. < or ≤ makes it below.
With ≤ or ≥ the line is solid, so anyone standing on it is inside. With < or > the line is dashed, so anyone on it is outside.
On two-fence nights, the safe zone is where both inequalities are true at once.
Build it right on the first try for 3 stars, second try for 2, any try after that for 1.