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 "1937.??.??"]
[Round "?"]
[White "Devos"]
[Black "O'Kelly"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "r4rk1/ppRn1p2/6pb/1P2pq1p/3N4/P1QPn1Pb/1B1NPP1P/4R1KB b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Qxf2+ 2. Kxf2 Ng4+ 3. Kf3 ( { White dare not try: } 3. Kg1 Be3# ) 3... e4+ 4. Kxe4 ( { White dare not try: } 4. Nxe4 Nde5# ) 4... Ndf6+ 5. Kf3 Nxh2+ 6. Kf2 Nfg4+ 7. Kg1 Be3# 0-1