diff --git a/frontend/main.js b/frontend/main.js
index 6187056..88e88b1 100644
--- a/frontend/main.js
+++ b/frontend/main.js
@@ -54,7 +54,6 @@ class Chess {
     this.canMoveTo = [];
     this.syncBackend();
     document.onclick = (ev) => this.click(ev);
-    console.log(this.moveSource);
   }
   syncBackend() {
     let config = this.backend.getConfig();
@@ -67,7 +66,6 @@ class Chess {
   showAvailableMoves(canMoveTo) {
   }
   click(ev) {
-    console.log(this);
     if (this.moveSource === null) {
       this._firstClick(ev);
     }
@@ -133,13 +131,16 @@ class Configuration {
     return this.pieces.find(piece => piece.position === position) || null;
   }
   dropAt(position) {
-    return this.pieces.filter(piece => piece.position !== position);
+    return new Configuration(
+      this.pieces.filter(piece => piece.position !== position)
+    );
   }
   makeMove(move) {
     const pieceToMove = this.getAt(move.from);
     if (pieceToMove === null) return this;
     else return new Configuration([
-      ...this.dropAt(move.from), pieceToMove.moveTo(move.to)
+      ...(this.dropAt(move.from).dropAt(move.to).pieces),
+      pieceToMove.moveTo(move.to)
     ])
   }
 }