diff --git a/sources/Grid.py b/sources/Grid.py
new file mode 100644
index 0000000..a718294
--- /dev/null
+++ b/sources/Grid.py
@@ -0,0 +1,6 @@
+__author__ = 'gaugendre'
+
+
+class Grid:
+    def __init__(self):
+        pass
\ No newline at end of file
diff --git a/sources/Square.py b/sources/Square.py
new file mode 100644
index 0000000..34de0df
--- /dev/null
+++ b/sources/Square.py
@@ -0,0 +1,46 @@
+__author__ = 'gaugendre'
+
+
+class Square:
+    """
+    Represents a square in the grid.
+    A square can be either Red, Blue, or Nothing, depending on the text
+    written in it and displayed ('R', 'B' or ' ').
+    """
+
+    def __init__(self, horiz, vert):
+        self.horiz = horiz
+        self.vert = vert
+
+    def get_next_horiz(self):
+        return Square(self.horiz + 1, self.vert)
+
+    def get_prev_horiz(self):
+        return Square(self.horiz - 1, self.vert)
+
+    def get_next_vert(self):
+        return Square(self.horiz, self.vert + 1)
+
+    def get_prev_vert(self):
+        return Square(self.horiz, self.vert - 1)
+
+    def __eq__(self, other):
+        if other is None or not isinstance(other, Square):
+            return False
+        else:
+            return self.vert == other.vert and self.horiz == other.horiz
+
+    def __hash__(self):
+        return hash((self.horiz, self.vert))
+
+
+def solve(grid):
+    for char in grid:
+        pass
+
+
+grid = [['R', ' ', ' ', 'R'],
+        ['R', ' ', 'B', ' '],
+        [' ', 'R', ' ', ' '],
+        [' ', ' ', ' ', ' ']]
+