--- a/src/network.h	Mon Aug 17 12:01:19 2026 +0200
+++ b/src/network.h	Mon Aug 17 12:14:51 2026 +0200
@@ -39,6 +39,7 @@
     
 #define NETCODE_ACCEPT 0x02
 #define NETCODE_DECLINE 0x04
+#define NETCODE_DECLINE_MOVE 0x05
 #define NETCODE_GAMEINFO 0x10
 #define NETCODE_PGNDATA 0x11
 #define NETCODE_MOVE 0x20
@@ -54,7 +55,7 @@
 #define NETCODE_CONNLOST 0x80
 #define NETCODE_ERROR 0xFF
 
-#define NETCODE_VERSION 21
+#define NETCODE_VERSION 22
 
 typedef struct {
     int fd; /* -1, if we are the client */