Primary Census

Balanced exchange starts with the right census but tangled links: swap two regions rather than repaint them. The graph is drawn on the board and conflicts turn red; census updates live.

Color six linked regions red, yellow or blue. Adjacent regions differ, and the global color census must match.

Tap or click the controls. Keyboard: Tab and Enter/Space operate every button; arrows/WASD move where available, R restarts, Z undoes calm puzzles.

Mistakes remain revisable. Unlimited undo and restart recover deadlocks.