diff --git a/Cargo.lock b/Cargo.lock
index 5e29178..25e81bb 100644
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diff --git a/Cargo.toml b/Cargo.toml
index 7c05bd7..45e7143 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+rand = "0.10.0"
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..3bfca7e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,37 @@
+mod card;
+mod classifier;
+mod hand;
+
+use card::{make_decks, Card, Rank, Suit};
+use classifier::classify;
+use rand::seq::SliceRandom;
+
 fn main() {
-    println!("Hello, world!");
+    let mut rng = rand::rng();
+    let mut deck = make_decks(1);
+    deck.shuffle(&mut rng);
+    let hand = &mut deck[..5];
+
+    // For testing specific examples.
+    if false {
+        let _hand = [
+            Card::new(Rank::Nine, Suit::Diamond),
+            Card::new(Rank::Ten, Suit::Diamond),
+            Card::new(Rank::Jack, Suit::Club),
+            Card::new(Rank::Queen, Suit::Spade),
+            Card::new(Rank::Two, Suit::Spade),
+        ];
+    }
+    hand.sort();
+
+    for h in hand.iter() {
+        print!("{}, ", h);
+    }
+    println!();
+
+    let hand = classify(&hand);
+    match hand {
+        Some(hand) => println!("{}", hand),
+        None => println!("Not a hand"),
+    }
 }