diff --git a/src/server/web/templates/CachePage.go b/src/server/web/templates/CachePage.go
index 24b64de..841b374 100644
--- a/src/server/web/templates/CachePage.go
+++ b/src/server/web/templates/CachePage.go
@@ -141,7 +141,7 @@ var cachePage = `
 				return;
 			var html = "";
 			for(var i = 0; i < len; i++) {
-				html += '<span class="piece" id="p'+i+'"></span>';
+				html += '<span class="piece" id="p'+i+'" title="'+i+'" ></span>';
 			}
 			cache.html(html);
 		}