Ads open in the same tab so if you accidentally click one during a game, it'll load right there and ruin your progress.
Most links should load in new tabs.
∀x (∃e (e ∈ x ∧ ∀x ¬(x ∈ e)) ∨ ∃y ¬∃e (e ∈ x ∧ ¬∃z (z ∈ y ∧ z ∈ e ∧ ∀x ¬((x ∈ y ∧ x ∈ e) ∧ ¬(x = z)))))
