> when you're down to guessing it's guaranteed to be safe
Sure. But, in a complex situation, it's rather hard to know whether "you're down to guessing". It seems like there's no more information to be extracted from the board, but you may be wrong. (At least I often am.) That said, you can cheat by pressing "Give me a hint", and it'll tell you whether it's safe to guess.
Sure. But, in a complex situation, it's rather hard to know whether "you're down to guessing". It seems like there's no more information to be extracted from the board, but you may be wrong. (At least I often am.) That said, you can cheat by pressing "Give me a hint", and it'll tell you whether it's safe to guess.