Nowadays, when you're not a grandmaster at 14, you can forget about it.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown494"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "2R5/1P6/K7/8/6k1/5p2/8/4r3 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. b8=Q ( { White can try: } 1. Rc4+ Kh3 2. b8=Q Ra1+ 3. Kb5 Rb1+ 4. Rb4 Rxb4+ 5. Kxb4 f2 6. Qf8 Kg2 7. Qg7+ Kh1 8. Qf6 Kg2 9. Qg5+ Kh1 10. Qf4 Kg2 11. Qg4+ Kh1 12. Qf3+ Kg1 13. Qg3+ Kh1 14. Qxf2 { Stalemate. } ) 1... Ra1+ 2. Kb5 Rb1+ 3. Kc4 Rxb8 4. Rxb8 f2 5. Rf8 Kg3 6. Kd3 Kg2 7. Ke2 f1=Q+ 8. Rxf1 { White wins with a
large material advantage. } 1-0