# HG changeset patch
# User Steve McConville
# Date 1346163763 -3600
# Node ID 344340582f0dbd63f55b1009f5149d09ab993536
# Parent fd75fb11cfe530fcc2bc509f9a802e5aef0c6cab
notes on analytic solution
diff --git a/9/solution.pl b/9/solution.pl
--- a/9/solution.pl
+++ b/9/solution.pl
@@ -7,3 +7,6 @@
between(1,N,Z),
Z + Y + X =:= N,
Z*Z =:= X*X + Y*Y.
+
+% Subsequently realised I can use Euler's equation to solve
+% analytically for n=20, m=5; much easier