diff -r ea2448961441 -r 7d57a252948e test/test-real-pgn.c
--- a/test/test-real-pgn.c	Sun Jul 19 17:13:16 2026 +0200
+++ b/test/test-real-pgn.c	Sun Jul 19 19:17:04 2026 +0200
@@ -43,8 +43,9 @@
     gamestate_init(&gamestate);
     CX_TEST_DO {
         int result = parse_pgn(pgn_data[index-1], &gamestate);
-        char msg[32];
-        sprintf(msg, "failed to parse game%03u.pgn", index);
+        char msg[64];
+        sprintf(msg, "failed to parse game%03u.pgn: code %d, pos: %zu",
+            index, result, pgn_error_position());
         CX_TEST_ASSERTM(result == pgn_no_error, msg);
     }
     gamestate_cleanup(&gamestate);