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Leetcode 2337. Move Pieces to Obtain a String
Given two strings with 'L', 'R', and blanks where L pieces can only slide left and R pieces only right, determine whether you can transform start into target by sliding pieces into blanks. The core challenge is to verify the relative order of L/R pieces is the same and that each L in start is not to the left of its target position (and each R not to the right), which prevents illegal moves or crossings.
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