diff --git a/grow/defs/pythag.yaml b/grow/defs/pythag.yaml
new file mode 100644
index 0000000..f23f748
--- /dev/null
+++ b/grow/defs/pythag.yaml
@@ -0,0 +1,21 @@
+global_memory_size: 2
+function_memory_size: 1
+instruction_limit: 20
+samples:
+- in:  [3,4]
+  out: [5]
+
+- in:  [5,12]
+  out: [13]
+
+- in:  [8,15]
+  out: [17]
+
+- in:  [7,24]
+  out: [25]
+
+- in:  [20,21]
+  out: [29]
+
+- in:  [12,35]
+  out: [37]