diff --git a/src/settings.ts b/src/settings.ts
index 83557d739..1e40c5a0b 100644
--- a/src/settings.ts
+++ b/src/settings.ts
@@ -393,7 +393,7 @@ export default {
   },
 
   training: {
-    puzzleBufferLen: 50,
+    puzzleBufferLen: 200,
     ratingDiffThreshold: 100
   },