Game III of the even-terms Morphy–Meek series — a Scotch Gambit, Meek (White) against Morphy, New York 1857. Notes from the 'Book of the First American Chess Congress,' with the Editor's additions.

1. 5.Nxc3 A much better move is 5. K. B. to Q. Kt's 5th.
2. 7.h3 White neglected to profit by his adversary's hasty play; he should have moved 7. Q. to Q. Kt's 3rd.
3. 16.Bxc5 We give a diagram of the situation, by which the reader can judge whether White had any better move at this point.
4. 21.Qd1 Had he moved the Q. to K. R's 4th, Black would have gained an overpowering advantage immediately, e.g.:— 21. Q. to K. R's 4th, R's P. takes P.; 22. Q. to K. Kt's 3rd (best), B. takes B.; threatening to check King and Queen with his Kt. at K's 7th, and having a winning attack.
5. 23…Qb6 For the purpose of bringing the Queen over to the King's side. A well conceived and decisive manoeuvre.
6. 26.Qg4 If White had ventured to capture the Bishop on this or the preceding move, he would have been checkmated in four moves.