Leetcode 1958. Check if Move is Legal

Determine whether placing your color at a specified free cell on an 8x8 board produces any "good line" by scanning all 8 directions for the pattern: one or more contiguous opponent pieces immediately adjacent to the placed cell followed by a same-color piece (no '.' in between), which together form a line of length ≥ 3.

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Leetcode 1958. Check if Move is Legal

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