--- a/src/network.h	Mon Aug 24 14:43:33 2026 +0200
+++ b/src/network.h	Mon Aug 24 15:48:19 2026 +0200
@@ -48,6 +48,7 @@
 #define NETCODE_STALEMATE 0x31
 #define NETCODE_NOMATERIAL 0x32
 #define NETCODE_THREEFOLD 0x33
+#define NETCODE_50MOVES 0x34
 #define NETCODE_RESIGN 0x41
 #define NETCODE_REMIS 0x42
 #define NETCODE_TAUNT 0x43