A passed pawn increases in strength as the number of pieces on the board diminishes.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "White player"]
[Black "Black player"]
[Result "*"]
[BlackElo "0"]
[FEN "6k1/1q4p1/1P3p1p/3pp3/8/6PP/1Q4PK/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Futile Blockade.|We must break black's blockade of white advanced passed
pawn. Black's extra material is of no use. } 1. Qb4 d4 2. Qc5 Qd7 3. Qc7 Qd5 4. b7 d3 5. b8=Q+ Kh7 6. Qcc8 Qf7 7. Qh8+ Kg6 8. Qbe8 d2 9. Qxf7+ Kxf7 10. Qd8 Ke6 11. Qxd2 { White wins with a large material advantage. } *