diff --git a/2020/sketch_2020_02_23a/sketch_2020_02_23a.gif b/2020/sketch_2020_02_23a/sketch_2020_02_23a.gif new file mode 100644 index 00000000..e675294e Binary files /dev/null and b/2020/sketch_2020_02_23a/sketch_2020_02_23a.gif differ