Tic Tac Eclipse

Claim the center to cast a brief eclipse: all four corners darken and are sealed for your opponent's next turn. When the shadow lifts, normal play resumes—plan your timing to bend the light in your favor.

Solar pulse tracks whose turn holds the light.

Player X begins under clear skies.
Corners open 3x3 grid 2 players

Tip: the eclipse lasts exactly one opposing turn. Corners glow again after the shadowed player places their mark.