diff --git a/chess/src/chess/Actor.java b/chess/src/chess/Actor.java
new file mode 100644
index 0000000..395dabb
--- /dev/null
+++ b/chess/src/chess/Actor.java
@@ -0,0 +1,9 @@
+package chess;
+
+// An actor is an entity capable of making descisions on the board.
+abstract class Actor {
+    ActorColor color;
+}
+
+// The color an Actor may assume.
+enum ActorColor { WHITE, BLACK }
diff --git a/chess/src/chess/Board.java b/chess/src/chess/Board.java
new file mode 100644
index 0000000..c4664bc
--- /dev/null
+++ b/chess/src/chess/Board.java
@@ -0,0 +1,11 @@
+package chess;
+import java.util.Map;
+
+class Board {
+    Map<Coord, Piece> board;
+}
+
+// Measured from top left.
+class Coord {
+    int x, y;
+}
diff --git a/chess/src/chess/Game.java b/chess/src/chess/Game.java
new file mode 100644
index 0000000..be8b307
--- /dev/null
+++ b/chess/src/chess/Game.java
@@ -0,0 +1,6 @@
+package chess;
+
+class Game {
+    Actor white;
+    Actor black;
+}
diff --git a/chess/src/chess/Piece.java b/chess/src/chess/Piece.java
new file mode 100644
index 0000000..1a60ee8
--- /dev/null
+++ b/chess/src/chess/Piece.java
@@ -0,0 +1,6 @@
+package chess;
+
+// A chess piece.
+abstract class Piece {}
+
+class Pawn extends Piece {}
diff --git a/chess/src/chess/Player.java b/chess/src/chess/Player.java
new file mode 100644
index 0000000..d4b5daf
--- /dev/null
+++ b/chess/src/chess/Player.java
@@ -0,0 +1,4 @@
+package chess;
+
+// A human-controlled Actor.
+class Player extends Actor {}