This is an aesthetically pleasing and relaxing game, but I while I knew some people here mentioned that is too easy, and I also think that is a bit too easy for my taste, this spark me a question: what if there is a challenge mode that it restricts answer only to the optimal number of moves? For getting an answer, it is not that difficult because player can just test each of the permutations of the four letters and they will eventually get an answer, but if the game considers the distance of swap and the number of operators used, while reset the level when the players exceed the optimal moves, would it be more interesting and challenging?
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