diff --git a/from_3b1b/active/chess.py b/from_3b1b/active/chess.py
new file mode 100644
index 00000000..112c11e7
--- /dev/null
+++ b/from_3b1b/active/chess.py
@@ -0,0 +1,49 @@
+from manimlib.imports import *
+
+
+class Test(Scene):
+    CONFIG = {
+        "camera_config": {
+            "apply_depth_test": True,
+        }
+    }
+
+    def construct(self):
+        chessboard = SGroup(*[
+            Cube(square_resolution=(4, 4))
+            for x in range(64)
+        ])
+        chessboard.arrange_in_grid(buff=0)
+        chessboard.set_height(7)
+        chessboard.set_depth(0.25, stretch=True)
+        colors = [LIGHT_GREY, DARKER_GREY]
+        for i, j in it.product(range(8), range(8)):
+            chessboard[i * 8 + j].set_color(colors[(i + j) % 2])
+        chessboard.move_to(ORIGIN, OUT)
+
+        coin = SGroup(
+            Disk3D(resolution=(1, 24)).shift(OUT),
+            Disk3D(resolution=(1, 24)).shift(IN),
+            Cylinder(height=2, resolution=(24, 1))
+        )
+        coin.set_height(1)
+        coin.set_depth(0.1, stretch=True)
+        coin.set_color(GOLD_D, 1)
+        coin[1].set_color(RED, 1)
+
+        coins = SGroup()
+        for cube in chessboard:
+            coin = coin.copy()
+            if random.random() < 0.5:
+                coin.rotate(PI, UP)
+            coin.set_height(0.7 * cube.get_height())
+            coin.next_to(cube, OUT, buff=0)
+            coins.add(coin)
+
+        self.camera.frame.set_rotation(
+            phi=45 * DEGREES,
+            theta=0 * DEGREES,
+        )
+
+        self.add(chessboard)
+        self.add(coins)
diff --git a/from_3b1b/active/covid.py b/from_3b1b/old/covid.py
similarity index 100%
rename from from_3b1b/active/covid.py
rename to from_3b1b/old/covid.py
diff --git a/from_3b1b/active/ctracing.py b/from_3b1b/old/ctracing.py
similarity index 99%
rename from from_3b1b/active/ctracing.py
rename to from_3b1b/old/ctracing.py
index 416975f3..1893ee4b 100644
--- a/from_3b1b/active/ctracing.py
+++ b/from_3b1b/old/ctracing.py
@@ -1,5 +1,5 @@
 from manimlib.imports import *
-from from_3b1b.active.sir import *
+from from_3b1b.old.sir import *
 
 
 class LastFewMonths(Scene):
diff --git a/from_3b1b/active/ldm.py b/from_3b1b/old/ldm.py
similarity index 100%
rename from from_3b1b/active/ldm.py
rename to from_3b1b/old/ldm.py
diff --git a/from_3b1b/active/sir.py b/from_3b1b/old/sir.py
similarity index 100%
rename from from_3b1b/active/sir.py
rename to from_3b1b/old/sir.py