דברי הימים ב ט:א פירוש: רש״י

to test Solomon whether that which she had heard about his wisdom was true, and she came to test him.

with riddles - Heb. בְחִידוֹת like (Jud. 14:12): “Let me ask you a riddle (אָחוּדָה נָא לָכֶם חִידָה),” [in the story] of Samson.