Bobby just drops the pieces and they fall on the right squares.
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[Event "Study"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown05"]
[Result "*"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/ppp4k/8/PPP4K/8/8/8/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ White to move and win.|Approaching with the kings is only good for a draw. } 1. b6 ( 1. Kg5 Kg7 2. Kf5 Kf7 3. Ke5 Ke7 4. Kd5 Kd7 5. a6 c6+ 6. bxc6+ bxc6+ 7. Ke5 Ke7 8. Kf5 Kf7 9. Ke5 Ke7 10. Kf5 Kf7 { Draw by repetition of
position. } ) 1... cxb6 2. a6 { The point. This move clears the only way to stop
white's other pawn. Remember, the player that promotes first usually wins. } 2... bxa6 3. c6 Kg7 4. c7 Kf7 5. c8=Q a5 6. Kg5 Ke7 7. Qc6 a4 8. Kf5 a3 9. Qc7+ Kf8 10. Kf6 a2 11. Qd8# *