better compare

src/main.rs

@@ -149,7 +149,7 @@ fn parse_moves(moves_str: &str) -> Result<Vec<Move>, &'static str> {
     while let Some(c) = chars.next() {
         let nco = chars.peek();
         match nco {
-            Some(nc) if (nc == &'2' || nc == &'\'') => {
+            Some(nc) if (*nc == '2' || *nc == '\'') => {
                 let s = format!("{}{}", c, nc);
                 let m = Move::from_str(s.as_str()).expect("unable to parse move");
                 moves.push(m);