Board Rules
- Exactly one cell must be ON in each row.
- Exactly one cell must be ON in each column.
- The diagonal parity rule must match the puzzle target.
Turn cells on and off to satisfy layered rules. Clicking a cell flips itself and its direct neighbors. Reach a valid board state in as few moves as possible.
Each click flips a plus-pattern: center, up, down, left, right. Plan chain reactions instead of solving one cell at a time.
When all rules are satisfied at once, the puzzle locks and your move count is recorded.