Bobby just drops the pieces and they fall on the right squares.
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[Event "Multiple Tournaments"]
[Site "New York"]
[Date "1913.??.??"]
[Round "?"]
[White "Jacques Grommer"]
[Black "Oscar Chajes"]
[Result "0-1"]
[BlackElo "0"]
[FEN "r3r1k1/ppp1q1pp/5p2/2bP1b2/2P2P2/PP3NP1/3BB3/R2QKR2 b Q - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Mate or win lots of material. } 1... Bc2 2. Qxc2 ( { White can try: } 2. Ne5 Bxd1 { Black wins with a large material advantage, and the attack continues. } ) 2... Qxe2# 0-1