Orthogonal light
Lamps emit rays in four directions.
Logic / 3 modes
Light Rays
Lamps emit rays in four directions.
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One game. Several approaches.
Eight rays
Lamps also emit diagonal rays.
Mirrors
╱ and ╲ reflect rays; walls stop them. Light every white cell and mirror. Lamps must not see each other, including by reflection. Wall numbers count adjacent lamps. Bordered lamps are fixed; a solver checks uniqueness.