diff --git a/perf.data b/perf.data
deleted file mode 100644
index 16b2060..0000000
Binary files a/perf.data and /dev/null differ
diff --git a/perf.data.old b/perf.data.old
deleted file mode 100644
index cbf50b5..0000000
Binary files a/perf.data.old and /dev/null differ
diff --git a/src/connect4/board.rs b/src/connect4/board.rs
new file mode 100644
index 0000000..d44c396
--- /dev/null
+++ b/src/connect4/board.rs
@@ -0,0 +1,39 @@
+use std::ops::ControlFlow;
+
+use crate::Player;
+
+type Position = Option<Player>;
+
+const BOARD_WIDTH: usize = 7;
+const BOARD_HEIGHT: usize = 4;
+const BOARD_POSITIONS: usize = BOARD_WIDTH * BOARD_HEIGHT;
+
+struct Winner<T>(Option<T>);
+
+impl<T> std::ops::Try for Winner<T> {
+    // Always None
+    type Output = Winner<!>;
+
+    type Residual = Winner<T>;
+
+    fn from_output(_: Self::Output) -> Self {
+        Self(None)
+    }
+
+    fn branch(self) -> ControlFlow<Self::Residual, Self::Output> {
+        match self {
+            Self(Some(_)) => ControlFlow::Break(self),
+            Self(None) => ControlFlow::Continue(self),
+        }
+    }
+}
+
+struct Board {
+    positions: [Position; BOARD_POSITIONS],
+}
+
+impl Board {
+    fn winner() -> Winner<Player> {
+        todo!()
+    }
+}
diff --git a/src/connect4/mod.rs b/src/connect4/mod.rs
new file mode 100644
index 0000000..1a9bdc2
--- /dev/null
+++ b/src/connect4/mod.rs
@@ -0,0 +1 @@
+mod board;
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index ec310c7..8555553 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,7 @@
+#![feature(never_type, try_trait_v2)]
+
 mod board;
+mod connect4;
 mod game;
 mod perfect;
 
diff --git a/src/main.rs b/src/main.rs
index 142795b..a04ff3c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -9,7 +9,7 @@ fn main() {
 
     let start = SystemTime::now();
 
-    for _ in 0..1000 {
+    for _ in 0..1 {
         let result = play_round::<PerfectPlayer, GreedyPlayer>(false);
         let idx = Player::as_u8(result);
         results[idx as usize] += 1;
@@ -29,17 +29,17 @@ fn play_round<X: GamePlayer, O: GamePlayer>(print: bool) -> Option<Player> {
     let mut board = Board::empty();
     let result = board.play(&mut X::default(), &mut O::default());
     if print {
-        //println!("{board}");
+        println!("{board}");
     }
     match result {
         Some(winner) => {
             if print {
-                //println!("player {winner} won!");
+                println!("player {winner} won!");
             }
         }
         None => {
             if print {
-                //println!("a draw...")
+                println!("a draw...")
             }
         }
     }