Morphy against Frederick Perrin, New York 1857 — a Sicilian Opening. Black's loss of time with the King's Knight tells, and Morphy works up a winning King's-side attack. Notes by Löwenthal.

1. 5.Be3 Kt. to Kt's 5th is now considered the best move at this juncture.
2. 9…Ne5 A sad loss of time, P. to Q's 4th, at once, would have been far better.
3. 19.Bxf5 Was any real danger to be apprehended from the capture of the B.?
4. 23.Qh5+ A diagram of the position is given to enable such students as may wish to do so, to work out the termination of the game, without recourse to the actual moves.
5. 23…Kd7 If K. to K's 2nd, the loss of the Queen would have followed on the move; and if to B's sq., White would have equally won with ease.