diff --git a/INSTALL.md b/INSTALL.md
index b7f5ea2..a0e882c 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -36,10 +36,10 @@
     * Run the command `git clone https://github.com/sanderland/katrain.git` to download the repository.
     * Changing directory using `cd katrain`
     * Run the command `pip3 install .` to install the package globally, or use `--user` to install locally, then run the program by typing `katrain` in the terminal.
-    * If you prefer not to install, run without installing using `python3 -m katrain`
+    * If you prefer not to install, run without installing using `python3 -m katrain` after installing the kivy dependencies mentioned in the next section.
 * A binary for KataGo is included, but if you have compiled your own, point the 'engine/katago' setting to the relevant KataGo v1.4+ binary.
 
-## Troubleshooting 
+## Troubleshooting
 
 Older linux machines may have trouble installing, you can try to manually install dependencies to resolve some issues.
 
diff --git a/katrain/gui.kv b/katrain/gui.kv
index e06bfe7..925aa90 100644
--- a/katrain/gui.kv
+++ b/katrain/gui.kv
@@ -853,6 +853,8 @@
     height: (self.parent.item_height or 50) * 5
 
 
+
+
 <HamburgerMenuContents@MDBoxLayout+BackgroundMixin>:
     katrain: app.gui
     player_setup: player_setup
diff --git a/katrain/gui/kivyutils.py b/katrain/gui/kivyutils.py
index b929c67..0d0a6cd 100644
--- a/katrain/gui/kivyutils.py
+++ b/katrain/gui/kivyutils.py
@@ -283,6 +283,11 @@ class PlayerSetupBlock(MDBoxLayout):
         self.add_widget(self.white)
         PlayerSetupBlock.INSTANCES.append(self)
 
+    def swap_players(self):
+        player_dump = {bw: p.player_type_dump for bw,p in self.players.items()}
+        for bw in 'BW':
+            self.update_players(bw,player_dump['B' if bw=='W' else 'W'])
+
     def update_players(self, bw, player_info):  # update sub widget based on gui state change
         self.players[bw].update_widget(player_type=player_info.player_type, player_subtype=player_info.player_subtype)
 
diff --git a/katrain/img/swap.png b/katrain/img/swap.png
new file mode 100644
index 0000000..830fb67
Binary files /dev/null and b/katrain/img/swap.png differ