diff -r 9cb41383540f -r 231a79d93c0c src/chess/rules.h
--- a/src/chess/rules.h	Sat Apr 04 13:25:47 2026 +0200
+++ b/src/chess/rules.h	Thu Apr 16 19:29:11 2026 +0200
@@ -231,6 +231,18 @@
  */
 void apply_move(GameState *gamestate, Move *move);
 
+/**
+ * Returns the remaining time on the clock for the specified
+ * half-move number.
+ *
+ * @param gameinfo the information about the game
+ * @param gamestate the current game state
+ * @param move_number the half-move that is now going to be played
+ * @return the remaining time - if time control is disabled, this function
+ * always returns zero
+ */
+uint16_t remaining_movetime2(GameInfo *gameinfo, GameState *gamestate,
+        unsigned move_number);
 
 /**
  * Returns the remaining time on the clock for the specified player.