diff --git a/evolve/evolve.c b/evolve/evolve.c
index ce312af..f186041 100644
--- a/evolve/evolve.c
+++ b/evolve/evolve.c
@@ -31,6 +31,7 @@ SOFTWARE.
 #include <time.h>
 
 #include "evolve.h"
+#include "genann.h"
 
 pcg32_random_t rng;
 
@@ -113,6 +114,9 @@ genann *child_from_mutation(genann **nns) {
 
 genann *mutate(genann *parent) {
   genann *child = genann_copy(parent);
+  // Hacky way to also have a slight chance of no mutation at all.
+  if (GENANN_RANDOM() < 0.01) return child;
+
   float mutation_rate = 0.0004; // 1/2500
   for (int i = 0; i < child->total_weights; i++)
   {
diff --git a/ruby/run_generation.rb b/ruby/run_generation.rb
index 2a90bcb..f164c86 100644
--- a/ruby/run_generation.rb
+++ b/ruby/run_generation.rb
@@ -251,9 +251,9 @@ def clean_up_generation(g)
   GNUGO10 = { 'name' => 'GnuGoLevel10', 'command' => 'gnugo --level 10 --mode gtp' }
   EXTERNAL_PLAYERS = [
     *(1..5).map { |i| BROWN.merge('name' => BROWN['name'] + i.to_s) },
-    *(1..5).map { |i| AMIGO.merge('name' => AMIGO['name'] + i.to_s) },
-    GNUGO0,
-    GNUGO10
+    *(1..10).map { |i| AMIGO.merge('name' => AMIGO['name'] + i.to_s) },
+    *(1..2).map { |i| GNUGO0.merge('name' => GNUGO0['name'] + i.to_s) },
+    *(1..2).map { |i| GNUGO10.merge('name' => GNUGO10['name'] + i.to_s) }
   ]
 
   def setup_tournament
diff --git a/stats b/stats
index 287d338..f68cb23 100755
--- a/stats
+++ b/stats
@@ -45,7 +45,7 @@ end
 $stats = File.exist?('stats.json') ? JSON.load_file('stats.json') : {}
 $starting = true
 
-TO_COMBINE = %w[Brown AmiGo]
+TO_COMBINE = %w[Brown AmiGo GnuGoLevel0 GnuGoLevel10]
 
 def stats_for(generation)
   return $stats[generation] if $stats[generation]
@@ -142,7 +142,7 @@ loop do
   gens = if options[:csv]
            generations[0..-2]
          else
-           generations[0..-2].reverse.take(40).reverse
+           generations[0..-2].reverse.take(50).reverse
          end
 
   if gens.empty?