Check if two chessboard squares have the same color

Math String

72.2% acceptance

Feb 25, 2026

142

You are given two strings coordinate1 and coordinate2 (e.g. "a1", "h3"). Return true if they have the same chess board color.

Solution

Rust

Time O(1)

Space O(1)

LeetCode

solution.rs

impl Solution {
  pub fn check_two_chessboards(coordinate1: String, coordinate2: String) -> bool {
    let color = |s: &str| -> i32 {
      let b = s.as_bytes();
      let col = (b[0] - b'a') as i32;
      let row = (b[1] - b'1') as i32;
      (col + row) % 2
    };
    color(&coordinate1) == color(&coordinate2)
  }
}