diff --git a/2023/day02/Cargo.lock b/2023/day02/Cargo.lock
new file mode 100644
index 0000000..52d399b
--- /dev/null
+++ b/2023/day02/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day02"
+version = "0.1.0"
diff --git a/2023/day02/Cargo.toml b/2023/day02/Cargo.toml
new file mode 100644
index 0000000..843335d
--- /dev/null
+++ b/2023/day02/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "day02"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2023/day02/input.txt b/2023/day02/input.txt
new file mode 100644
index 0000000..f06a648
--- /dev/null
+++ b/2023/day02/input.txt
@@ -0,0 +1,100 @@
+Game 1: 7 blue, 6 green, 3 red; 3 red, 5 green, 1 blue; 1 red, 5 green, 8 blue; 3 red, 1 green, 5 blue
+Game 2: 9 green, 1 blue, 12 red; 1 blue, 18 green, 8 red; 2 blue, 6 green, 13 red; 3 blue, 13 red, 7 green; 5 blue, 4 red, 4 green; 6 blue, 7 green, 4 red
+Game 3: 5 blue, 9 red, 14 green; 10 green, 3 blue; 11 red, 2 blue, 8 green; 5 red, 2 blue; 5 blue, 7 green, 8 red
+Game 4: 2 red, 3 blue, 2 green; 17 green, 6 blue, 1 red; 3 blue, 5 green, 1 red; 4 red, 1 blue, 16 green; 5 red, 4 blue, 13 green; 14 green, 5 blue, 6 red
+Game 5: 3 red, 17 green, 10 blue; 9 blue, 5 green; 14 green, 9 blue, 11 red
+Game 6: 4 green, 18 blue, 3 red; 6 green, 8 blue, 9 red; 4 green, 9 blue, 7 red; 9 red, 1 green, 12 blue
+Game 7: 1 blue, 14 green; 1 red, 4 blue, 15 green; 3 blue, 6 green; 3 blue, 2 green, 1 red; 1 red, 3 green, 1 blue
+Game 8: 10 red, 3 blue, 3 green; 5 blue, 7 red, 3 green; 3 red, 3 green, 11 blue; 1 red, 7 green, 10 blue; 13 blue, 5 green, 5 red; 1 green, 17 blue, 3 red
+Game 9: 1 blue, 6 green; 7 green, 2 red; 3 red, 2 green; 1 blue, 4 red, 3 green; 7 green, 1 blue, 1 red
+Game 10: 14 green, 6 blue, 1 red; 8 green, 5 red, 1 blue; 8 green, 5 blue, 5 red; 2 green, 3 blue, 5 red
+Game 11: 1 blue, 2 green; 1 blue, 1 green, 7 red; 1 blue, 4 green, 7 red; 2 red, 2 green, 1 blue
+Game 12: 5 blue, 12 green, 12 red; 11 green, 3 red; 14 green, 3 blue, 18 red
+Game 13: 2 green, 6 red; 6 red, 5 blue; 7 red, 3 blue, 8 green; 7 red, 8 green; 3 blue, 2 green, 3 red; 1 blue, 8 red, 6 green
+Game 14: 18 green, 6 blue, 5 red; 5 blue, 15 red, 19 green; 7 green, 11 blue, 20 red; 5 red, 18 green, 7 blue
+Game 15: 3 red, 16 green, 1 blue; 11 green, 6 red, 1 blue; 12 green, 2 red; 17 green, 1 blue, 14 red
+Game 16: 3 red, 2 green, 5 blue; 1 green, 6 blue, 1 red; 1 green, 2 blue, 3 red; 1 blue, 1 red; 5 blue, 1 green, 2 red
+Game 17: 3 blue, 6 red; 1 blue, 2 red; 1 blue, 1 green, 7 red; 1 green, 7 red, 2 blue; 7 red, 1 blue; 1 green, 8 red, 1 blue
+Game 18: 6 green, 10 red; 6 red, 7 green; 10 red, 11 green; 10 red, 2 blue, 5 green
+Game 19: 2 blue; 1 blue, 4 green, 6 red; 7 green, 6 red, 2 blue; 2 blue, 5 red, 4 green; 1 green, 10 red
+Game 20: 6 red, 5 green, 10 blue; 5 blue, 5 green, 9 red; 7 blue, 3 green, 3 red; 9 blue, 12 red, 1 green
+Game 21: 4 red, 18 blue, 14 green; 3 green, 14 blue, 5 red; 5 green, 12 blue; 1 blue, 2 red, 1 green; 5 red, 11 green, 7 blue; 17 green, 4 red, 15 blue
+Game 22: 1 blue, 14 green, 4 red; 7 green, 10 red; 9 green, 1 blue, 9 red; 1 blue, 8 green, 5 red
+Game 23: 4 blue, 5 green, 2 red; 6 blue, 8 red, 4 green; 4 blue, 17 red, 14 green
+Game 24: 3 green, 8 blue; 3 blue, 5 green, 13 red; 17 red, 4 green
+Game 25: 19 red, 9 blue, 1 green; 3 green, 18 red, 6 blue; 1 green, 7 red, 7 blue; 8 blue, 1 red
+Game 26: 10 green, 12 blue, 2 red; 9 red; 10 blue, 12 green, 9 red
+Game 27: 2 blue, 8 green, 6 red; 5 green, 9 red; 4 red, 11 green
+Game 28: 10 blue, 20 red; 14 blue, 3 green, 2 red; 9 red, 12 blue, 1 green
+Game 29: 4 red, 1 blue, 2 green; 1 green, 6 red, 1 blue; 15 red
+Game 30: 1 red, 13 blue, 6 green; 3 blue, 4 green; 19 blue, 11 green; 1 red, 11 green, 14 blue
+Game 31: 10 red, 12 green; 12 green, 10 red; 2 blue, 15 red, 12 green; 2 green, 2 blue, 15 red; 9 green, 5 red, 2 blue
+Game 32: 5 blue, 5 green, 8 red; 5 green, 6 red; 5 blue, 8 red, 4 green; 5 green, 3 blue, 6 red
+Game 33: 1 red, 9 green, 5 blue; 17 green, 4 blue; 3 green, 2 blue; 10 green, 2 blue; 1 blue, 4 green; 2 green, 9 blue
+Game 34: 11 blue, 11 red, 9 green; 13 red, 3 blue, 5 green; 9 green, 12 blue, 5 red; 13 red, 8 blue, 5 green
+Game 35: 1 green, 3 red, 7 blue; 1 red, 3 green, 9 blue; 1 blue, 2 green, 1 red; 11 blue, 5 red, 6 green
+Game 36: 4 blue, 12 green, 16 red; 7 blue, 11 green; 8 green, 5 blue, 1 red; 14 green, 3 red
+Game 37: 13 red, 5 blue, 9 green; 1 red, 10 blue, 14 green; 1 green, 2 blue, 10 red; 13 red, 10 blue; 1 blue, 8 green
+Game 38: 3 red, 4 blue, 8 green; 1 red, 11 blue, 4 green; 13 blue, 8 green; 3 red, 3 green, 10 blue; 1 red, 1 blue, 1 green; 1 green, 2 red, 10 blue
+Game 39: 9 red, 7 blue, 1 green; 15 red, 4 green, 1 blue; 2 green, 8 blue, 7 red; 6 blue, 11 red; 12 red, 2 blue, 7 green
+Game 40: 13 red, 3 green, 1 blue; 3 green, 10 red; 16 red
+Game 41: 1 blue, 3 red; 7 blue, 5 red, 3 green; 4 red, 3 blue, 2 green; 2 blue, 5 red, 1 green; 3 green, 4 red, 3 blue; 5 blue, 2 red
+Game 42: 1 red, 4 green; 11 red, 4 green; 13 red; 1 blue, 10 red; 1 blue, 2 red, 4 green
+Game 43: 11 green, 13 red, 1 blue; 11 green, 9 red, 2 blue; 7 green; 13 green, 15 red; 1 blue, 14 green
+Game 44: 5 green, 14 blue, 15 red; 13 blue, 15 green; 9 green, 15 red, 6 blue
+Game 45: 16 red, 8 blue; 1 green, 4 blue, 6 red; 4 blue, 8 red; 12 red, 3 blue, 3 green; 2 green, 4 red, 4 blue; 2 green, 8 blue, 10 red
+Game 46: 12 blue, 3 green, 12 red; 9 red, 9 blue; 3 green, 12 red; 10 red, 6 green; 2 red, 7 blue
+Game 47: 9 green, 6 red; 1 blue, 7 red, 10 green; 1 green, 2 red; 1 red, 3 green
+Game 48: 9 blue, 5 green, 13 red; 14 green, 4 red; 15 red, 9 green, 1 blue; 4 blue, 6 red, 13 green; 9 green, 8 blue, 8 red
+Game 49: 5 blue, 3 red; 1 green, 2 red, 5 blue; 1 green, 7 blue; 3 green
+Game 50: 8 red, 6 green; 10 blue, 4 green, 6 red; 8 green, 11 blue, 9 red
+Game 51: 5 blue; 13 blue; 1 red, 2 blue, 1 green; 1 red, 8 blue
+Game 52: 7 blue; 1 red, 2 green, 12 blue; 1 red, 5 blue; 2 red, 7 blue, 4 green; 3 green, 2 red, 2 blue
+Game 53: 10 blue, 12 red; 3 green, 5 blue, 3 red; 14 red, 4 green, 7 blue; 1 red, 14 blue
+Game 54: 2 blue, 14 red, 3 green; 3 green, 7 red; 2 blue, 3 green, 9 red; 3 green, 7 red; 1 green, 14 red, 1 blue
+Game 55: 3 green, 9 red, 12 blue; 5 blue, 5 green, 2 red; 7 green, 14 red, 12 blue
+Game 56: 1 blue, 3 red, 4 green; 5 red, 8 green, 1 blue; 3 green, 1 blue, 2 red
+Game 57: 8 blue, 13 red, 2 green; 3 blue, 5 red; 7 red, 2 green; 2 red, 5 blue, 3 green; 1 green, 4 blue
+Game 58: 4 green, 3 red, 2 blue; 5 green, 2 blue, 10 red; 11 green, 1 red, 2 blue; 4 red, 5 green
+Game 59: 5 green; 4 green, 2 blue; 1 red, 9 green; 7 green, 2 blue; 16 green, 1 blue
+Game 60: 6 green, 5 blue, 1 red; 5 blue, 3 green, 6 red; 1 green, 5 blue, 14 red; 6 red, 4 blue, 3 green
+Game 61: 2 green, 6 red, 6 blue; 6 blue, 3 red; 1 green, 2 red, 2 blue; 1 red, 2 green; 5 red, 1 green, 2 blue; 2 green, 6 red, 6 blue
+Game 62: 18 green, 8 blue, 1 red; 8 green, 4 red; 13 blue, 1 red, 3 green; 7 blue, 2 green, 4 red; 4 blue, 12 green, 5 red; 12 green, 11 blue
+Game 63: 2 red, 3 blue; 10 green, 13 red, 1 blue; 11 red, 3 green, 4 blue
+Game 64: 1 green, 16 red; 17 blue, 9 red, 1 green; 14 red, 7 blue
+Game 65: 7 blue, 11 red, 11 green; 7 red, 11 green; 3 blue, 13 red, 11 green; 5 green, 6 blue; 11 blue, 8 red, 3 green
+Game 66: 3 blue, 1 green, 3 red; 5 blue, 2 green, 5 red; 1 blue, 2 green, 7 red; 2 blue, 6 red; 7 red, 2 green, 2 blue; 2 red
+Game 67: 1 blue, 6 red, 2 green; 1 blue, 10 green, 6 red; 8 red, 2 blue, 4 green; 7 green, 9 red, 1 blue; 8 red, 7 green; 5 green, 1 blue
+Game 68: 15 blue, 8 green, 2 red; 6 blue, 2 green; 5 red, 6 green, 8 blue; 6 red, 11 green, 7 blue; 1 red, 3 blue; 5 red, 6 green, 5 blue
+Game 69: 5 blue, 4 green; 1 green, 11 red, 9 blue; 4 green, 15 blue, 6 red; 11 blue, 4 green, 5 red; 8 red, 3 green; 5 blue, 8 red
+Game 70: 5 blue, 4 red, 8 green; 6 blue, 6 green; 14 blue, 7 red, 1 green; 2 green, 6 blue, 3 red; 7 red, 11 blue, 3 green
+Game 71: 13 red, 6 blue, 10 green; 7 red, 12 green; 9 green, 14 red, 2 blue
+Game 72: 9 red, 3 green, 3 blue; 8 red, 7 blue, 5 green; 3 blue, 2 green, 1 red; 1 red, 2 blue, 2 green; 10 red, 7 green, 6 blue
+Game 73: 4 green, 3 red; 1 red; 2 red, 2 blue, 2 green; 1 blue, 3 red, 1 green; 2 blue, 3 red, 2 green; 1 red, 1 blue
+Game 74: 12 green, 4 red, 4 blue; 3 red, 13 green; 1 red, 13 green, 1 blue; 1 red, 3 blue, 6 green; 6 blue, 5 red, 4 green; 7 blue, 5 green, 1 red
+Game 75: 11 red, 1 green; 12 blue, 1 red; 2 blue, 1 green, 4 red; 11 red; 12 red, 6 green, 10 blue; 4 green, 5 blue, 7 red
+Game 76: 2 blue, 5 red, 6 green; 1 red, 10 green, 11 blue; 7 red, 11 green; 4 red, 10 blue, 10 green; 7 blue, 16 green, 2 red
+Game 77: 2 blue, 11 red, 4 green; 6 green, 3 blue, 2 red; 2 blue, 2 red, 7 green; 8 red, 14 blue, 5 green; 5 green, 2 blue, 18 red
+Game 78: 9 red, 7 green, 6 blue; 12 blue, 6 red; 1 red, 15 blue, 7 green; 3 blue, 11 green, 1 red
+Game 79: 3 blue; 1 blue; 1 red, 1 blue, 1 green; 3 blue; 5 blue, 1 red; 1 blue, 1 green, 1 red
+Game 80: 18 blue, 13 green, 7 red; 18 blue, 3 green, 3 red; 2 red, 9 blue, 14 green
+Game 81: 11 blue, 6 green, 3 red; 8 green, 12 red, 10 blue; 5 red, 4 blue, 13 green
+Game 82: 2 blue, 3 red; 4 blue, 17 red; 9 red; 12 red; 1 green, 6 blue, 7 red; 20 red
+Game 83: 1 blue, 1 red; 3 red, 1 blue; 3 red, 5 green; 1 blue, 2 green, 4 red; 5 green, 3 blue, 2 red
+Game 84: 4 red, 2 blue, 2 green; 8 red, 10 blue; 1 green, 15 red, 8 blue
+Game 85: 15 green; 11 red, 2 blue, 5 green; 8 red, 2 blue, 12 green; 15 red, 10 green; 10 red, 15 green; 17 red, 1 blue, 11 green
+Game 86: 6 blue, 1 red; 2 green, 1 red, 8 blue; 2 green, 10 blue; 10 blue, 2 green; 1 red, 5 blue
+Game 87: 4 red, 4 blue; 18 red, 8 blue; 16 red; 4 red, 1 green, 3 blue; 14 red, 9 blue
+Game 88: 11 green, 7 blue, 4 red; 3 red; 2 blue, 12 red, 19 green; 13 red, 3 blue, 2 green
+Game 89: 1 green, 1 red; 1 blue, 1 red, 6 green; 6 green, 3 red; 5 green, 2 red, 6 blue; 7 blue, 2 red, 8 green; 1 red, 2 blue
+Game 90: 3 green, 3 red, 3 blue; 5 green, 2 blue, 3 red; 1 blue, 2 red; 11 green, 1 blue, 2 red; 1 green, 3 blue, 4 red
+Game 91: 7 blue, 2 red; 2 blue, 1 red, 1 green; 6 blue, 1 red; 1 red, 7 blue
+Game 92: 11 green, 16 blue; 17 red, 7 blue, 9 green; 11 green, 3 blue, 12 red; 2 blue, 1 green, 6 red
+Game 93: 6 red, 1 blue, 3 green; 1 blue, 8 red, 7 green; 3 red, 5 green; 1 red, 2 green; 3 red, 7 green; 2 green, 15 red, 1 blue
+Game 94: 7 blue, 2 red, 2 green; 9 blue, 4 red, 2 green; 9 blue, 5 red, 3 green; 1 blue, 4 red, 3 green; 4 red, 1 green, 7 blue; 9 blue, 3 green, 3 red
+Game 95: 1 blue, 2 green, 2 red; 6 green, 6 red, 1 blue; 3 blue, 5 red, 2 green; 1 blue; 5 green, 2 red, 2 blue
+Game 96: 3 blue, 6 red, 5 green; 5 blue, 8 green, 9 red; 2 red, 5 green, 1 blue; 6 green, 4 blue, 3 red; 2 green, 2 blue; 6 blue, 4 green
+Game 97: 6 green, 8 blue, 5 red; 9 green, 6 blue; 3 green, 3 blue; 2 blue, 10 green, 4 red
+Game 98: 11 blue, 1 green, 9 red; 5 green, 1 blue, 6 red; 13 blue, 6 green, 10 red; 6 blue, 4 green, 9 red
+Game 99: 4 red, 3 green, 3 blue; 6 blue, 4 green, 11 red; 3 green, 15 red; 1 blue, 6 green, 14 red
+Game 100: 14 green, 6 blue, 12 red; 2 green, 1 blue, 2 red; 12 red, 7 blue, 3 green; 1 blue, 12 red, 8 green
diff --git a/2023/day02/src/main.rs b/2023/day02/src/main.rs
new file mode 100644
index 0000000..8b834ef
--- /dev/null
+++ b/2023/day02/src/main.rs
@@ -0,0 +1,68 @@
+fn main() {
+    let input = include_str!("../input.txt");
+
+    println!("{}", parse_input(input));
+}
+
+fn parse_game_line(line: &str) -> (usize, Vec<(usize, usize, usize)>) {
+    let (game_name, hands) = line.split_once(": ").unwrap();
+
+    (
+        game_name.split_once(" ").unwrap().1.parse::<_>().unwrap(),
+        hands
+            .split("; ")
+            .map(|hand| {
+                hand.split(", ").fold((0, 0, 0), |counts, hand| {
+                    let (count, color) = hand.split_once(" ").unwrap();
+                    let count = count.parse::<_>().unwrap();
+                    match color {
+                        "red" => (count, counts.1, counts.2),
+                        "green" => (counts.0, count, counts.2),
+                        "blue" => (counts.0, counts.1, count),
+                        _ => panic!("invalid color {color}"),
+                    }
+                })
+            })
+            .collect::<Vec<_>>(),
+    )
+}
+
+fn parse_input(input: &str) -> usize {
+    let max_cubes = (12, 13, 14);
+
+    input
+        .lines()
+        .map(parse_game_line)
+        .filter_map(|game| {
+            let game_max = game.1.iter().fold((0, 0, 0), |total, game| {
+                (
+                    total.0.max(game.0),
+                    total.1.max(game.1),
+                    total.2.max(game.2),
+                )
+            });
+
+            if game_max.0 <= max_cubes.0 && game_max.1 <= max_cubes.1 && game_max.2 <= max_cubes.2 {
+                Some(game.0)
+            } else {
+                None
+            }
+        })
+        .sum()
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    const EXAMPLE_INPUT: &str = "Game 1: 3 blue, 4 red; 1 red, 2 green, 6 blue; 2 green
+Game 2: 1 blue, 2 green; 3 green, 4 blue, 1 red; 1 green, 1 blue
+Game 3: 8 green, 6 blue, 20 red; 5 blue, 4 red, 13 green; 5 green, 1 red
+Game 4: 1 green, 3 red, 6 blue; 3 green, 6 red; 3 green, 15 blue, 14 red
+Game 5: 6 red, 1 blue, 3 green; 2 blue, 1 red, 2 green";
+
+    #[test]
+    fn test_part1() {
+        assert_eq!(parse_input(EXAMPLE_INPUT), 8);
+    }
+}