Lights Out is a logic game wherein all lights need to be turned off to complete each board. See the first problem in the series for an introduction.
This problem contains boards that each require any number of moves to solve. The function you write has to determine if the initial state is a potential answer—i.e., if toggling only the starting lights are sufficient to solve the board.
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Next: 5x5, light-only solution? II
Finding Perfect Squares
the fly, the train, the second train, and their Zeno's paradox
Put two time series onto the same time basis
Divisible by 7
Lights Out 3 - 5x5, 6 moves
The 5th Root
Self-similarity 1 - Every other term
Divisible by n, Truncated-number Divisors
Rule of mixtures (composites) - weighted bound
Lights Out 20 - 4x4, x moves
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