diff --git a/data/examples/13.txt b/data/examples/13.txt
new file mode 100644
index 000000000..3b6b5cc
--- /dev/null
+++ b/data/examples/13.txt
@@ -0,0 +1,15 @@
+#.##..##.
+..#.##.#.
+##......#
+##......#
+..#.##.#.
+..##..##.
+#.#.##.#.
+
+#...##..#
+#....#..#
+..##..###
+#####.##.
+#####.##.
+..##..###
+#....#..#
diff --git a/src/bin/13.rs b/src/bin/13.rs
new file mode 100644
index 000000000..658956c
--- /dev/null
+++ b/src/bin/13.rs
@@ -0,0 +1,51 @@
+fn mirror_h(shape: &Vec<Vec<char>>) -> Option<usize> {
+    (1..(shape.len() - 1))
+        .filter(|&i| {
+            shape
+                .iter()
+                .skip(i)
+                .zip(shape.iter().take(i).rev())
+                .all(|(x, y)| x.iter().zip(y.iter()).all(|(xx, yy)| xx == yy))
+        })
+        .max()
+}
+fn mirror_v(shape: &Vec<Vec<char>>) -> Option<usize> {
+    let shape = (0..shape[0].len())
+        .map(|col| (0..shape.len()).map(|row| shape[row][col]).collect())
+        .collect();
+
+    mirror_h(&shape)
+}
+
+pub fn part_one(input: &str) -> Option<usize> {
+    Some(
+        input
+            .split("\n\n")
+            .map(|x| x.lines().map(|line| line.chars().collect()).collect())
+            .map(|shape| {
+                let v = mirror_v(&shape).unwrap_or(0);
+                let h = mirror_h(&shape).unwrap_or(0) * 100;
+                v + h
+            })
+            .sum(),
+    )
+}
+
+pub fn part_two(_input: &str) -> Option<usize> {
+    None
+}
+
+aoc::solution!(13);
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn test_part_one() {
+        assert_eq!(part_one(&aoc::template::read_file("examples", 13)), None);
+    }
+    #[test]
+    fn test_part_two() {
+        assert_eq!(part_two(&aoc::template::read_file("examples", 13)), None);
+    }
+}