fix pruning bug, (increase in workset :()

src/azul.rs

@@ -486,7 +486,7 @@ impl Game {
             },
             GameMove(1..=9, _, _) => {
                 let board =  &mut self.boards[self.player];
-                if game_move.0 > self.factories.len() - 1 {
+                if game_move.0 > self.factories.len() {
                     return Err("That factory is out of bounds");
                 }
 

src/main.rs

@@ -27,6 +27,11 @@ fn main() -> Result<(), &'static str> {
             game.do_move(GameMove(4, Tile::Blue, 2))?;
             game.do_move(GameMove(0, Tile::Black, 4))?;
 
+            game.do_move(GameMove(5, Tile::Black, 1))?;
+            game.do_move(GameMove(0, Tile::Blue, 3))?;
+            
+            println!("{:#?}", game);
+
             println!("{}", count_options(game, 1, 2));
 
             Ok(())