Lights Out GF(q)

Edit mode — click cells to toggle. Press Edit again to lock & play.

Grid
Moves 0

Solved! All lights out.

This configuration is unsolvable — it lies outside the column space of the move matrix. Edit the board to fix it.

Field

Working in

Each cell holds a value in ℤ/2ℤ. Clicking cycles the cell and its neighbours modulo 2.

Preset Puzzles

About

State space: 225 configurations. The null space of the move matrix determines solvability.