The passed Pawn is a criminal that must be kept under lock and key. Mild measures, such as police surveillance, are not sufficient.
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[Event "rated untimed match"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "Unknown"] [Black "Unknown334"] [Result "0-1"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "7k/6p1/5p2/Pq6/8/2B2PPp/1P2r2P/1Q3R1K b - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1... Rxb2 2. Qe1 ( { White can try: } 2. Bxb2 Qe2 3. Rg1 Qxf3+ 4. Rg2 Qxg2# ) 2... Rb1 3. Qxb1 Qe2 4. Qb8+ Kh7 5. Qb1+ Kh6 6. Bd2+ g5 7. Bxg5+ Kxg5 8. f4+ Kh6 9. Rg1 Qf3+ 10. Rg2 Qxg2# 0-1