diff --git a/2021/sketch_2021_01_19a/sketch_2021_01_19a.png b/2021/sketch_2021_01_19a/sketch_2021_01_19a.png
new file mode 100644
index 00000000..86a1de9c
Binary files /dev/null and b/2021/sketch_2021_01_19a/sketch_2021_01_19a.png differ
diff --git a/2021/sketch_2021_01_19a/sketch_2021_01_19a.pyde b/2021/sketch_2021_01_19a/sketch_2021_01_19a.pyde
new file mode 100644
index 00000000..e4f14071
--- /dev/null
+++ b/2021/sketch_2021_01_19a/sketch_2021_01_19a.pyde
@@ -0,0 +1,37 @@
+
+def setup():
+    size(512 +128, 512 + 128) #, PDF, "a.pdf")
+    rectMode(CENTER)
+    noFill()
+    stroke(0, 0, 255)
+    noSmooth()
+    noLoop()
+    
+def draw():
+    background(0)
+    rec_grid(width / 2, height / 2, 8, width)
+    saveFrame("###.png")
+    
+def keyPressed():
+    redraw()
+    
+def rec_grid(x, y, n, tw):
+    cw = float(tw) / n
+    margin = (cw - tw) / 2.0
+    for i in range(n):
+        nx = x + cw * i + margin
+        for j in range(n):
+            ny = y + cw * j + margin
+            if cw > 8 and random(10) < 9:
+                rec_grid(nx, ny, 2, cw)
+            else:
+                squarish(nx, ny, cw-2)
+    
+def squarish(x, y, w):
+      xa, ya = x - w / 2, y - w / 2
+      xb, yb = x + w / 2, y - w / 2
+      xc, yc = x + w / 2, y + w / 2
+      xd, yd = x - w / 2, y + w / 2
+      coords = (xa, ya, xb, yb, xc, yc, xd, yd)
+      rnd_coords = (c + int(random(-10, 10) * (y / height)) for c in coords)
+      quad(*rnd_coords)
diff --git a/README.md b/README.md
index 30833204..0468e9d0 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,12 @@ Here are listed some of the tools I have been using:
 
 ---
 
+![sketch_2021_01_19a](2021/sketch_2021_01_19a/sketch_2021_01_19a.png)
+
+[sketch_2021_01_19a](https://github.com/villares/sketch-a-day/tree/master/2021/sketch_2021_01_19a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]
+
+---
+
 ![sketch_2021_01_18a](2021/sketch_2021_01_18a/sketch_2021_01_18a.gif)
 
 [sketch_2021_01_18a](https://github.com/villares/sketch-a-day/tree/master/2021/sketch_2021_01_18a) [[Py.Processing](https://villares.github.io/como-instalar-o-processing-modo-python/index-EN)]