diff -r e57e2874fb2a -r d1420f5c5704 src/chess/king.c
--- a/src/chess/king.c	Mon Aug 24 16:13:51 2026 +0200
+++ b/src/chess/king.c	Tue Aug 25 18:35:18 2026 +0200
@@ -66,7 +66,7 @@
 
 bool king_isblocked(const GameState *gamestate, const Move *move) {
     
-    uint8_t opponent_color = opponent_color(piece_color(move->piece));
+    uint8_t op_color = opponent_color(piece_color(move->piece));
     
     /* being in check does not "block" the king, so don't test it here */
     bool blocked = false;
@@ -82,7 +82,7 @@
             incheck = is_check_position(gamestate);
         }
         blocked |= incheck || gamestate->board[move->torow][midfile] ||
-            is_covered(gamestate, move->torow, midfile, opponent_color);
+            is_covered(gamestate, move->torow, midfile, op_color);
     }
     
     return blocked;