diff --git a/src/day4/mod.rs b/src/day4/mod.rs
new file mode 100644
index 0000000..456746c
--- /dev/null
+++ b/src/day4/mod.rs
@@ -0,0 +1,26 @@
+use super::utils::Part;
+
+struct Card {
+    nb_winning: u32
+}
+
+pub fn parse(line: &str) -> Card {
+    let (_, values) = line.split_once(':').unwrap();
+    let (winning, numbers) = values.split_once('|').unwrap();
+
+    todo!()
+}
+
+pub fn solve(lines: Vec<String>, part: Part) -> u32 {
+
+
+    todo!()
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn test_line() {
+        let line = "Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53".to_owned();
+    }
+}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index 7e276a0..80412d7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,7 +3,9 @@
 mod day1;
 mod day2;
 mod day3;
+mod day4;
 mod utils;
+use log::info;
 use utils::Part;
 
 
@@ -14,6 +16,10 @@ fn main() {
         .filter_level(log::LevelFilter::Debug)
         .format_timestamp(None)
         .init();
+
+    let data_path = "./datasets/adventofcode.com_2023_day_4_input.txt";
+    let result = day4::solve(utils::lines_from_file(data_path).expect("Could not load the dataset for day 3"), Part::One);
+    info!("Result : {}", result);
 }