--- a/src/network.h	Fri Aug 21 16:08:50 2026 +0200
+++ b/src/network.h	Fri Aug 21 17:04:43 2026 +0200
@@ -44,8 +44,9 @@
 #define NETCODE_PGNDATA 0x11
 #define NETCODE_MOVE 0x20
 #define NETCODE_CHECK 0x22
-#define NETCODE_CHECKMATE 0x24
+#define NETCODE_CHECKMATE 0x23
 #define NETCODE_STALEMATE 0x28
+#define NETCODE_NOMATERIAL 0x29
 #define NETCODE_THREEFOLD 0x30
 #define NETCODE_RESIGN 0x41
 #define NETCODE_REMIS 0x42
@@ -55,7 +56,7 @@
 #define NETCODE_CONNLOST 0x80
 #define NETCODE_ERROR 0xFF
 
-#define NETCODE_VERSION 22
+#define NETCODE_VERSION 23
 
 typedef struct {
     int fd; /* -1, if we are the client */