Every Pawn is a potential Queen.
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[Event "rated untimed match"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Unknown"] [Black "Unknown399"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "8/8/ppp1kppp/4P3/1P2KPPP/P7/8/8 b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... fxe5 2. fxe5 c5 3. h5 g5 4. bxc5 bxc5 5. Ke3 Kxe5 6. a4 a5 7. Kd3 Kf4 8. Kc4 Kxg4 9. Kxc5 Kxh5 10. Kb5 g4 11. Kxa5 g3 12. Kb5 g2 13. a5 g1=Q { Black wins with a large material advantage. } 0-1