Table No. 6 of the Café de la Régence blindfold display (Paris, Sept. 1858); a Petroff's Defence against M. Potier.
3.Bc4If White play 3. Kt. to Q. B's 3rd, Black replies with B. to Q. Kt's 5th, and the game is then usually continued thus: 4. Kt. takes P., B. takes Kt.; 5. Q's P. takes B., P. to Q's 3rd; 6. Kt. to K. B's 3rd, Kt. takes P.; 7. B. to Q's 3rd, Kt. to K. B's 3rd (best); 8. Castles, Castles—and the situation is a perfectly even one.
4…Nf6This move leads to an even game, as does also P. to Q's 4th, adopted by Lichtenhein when playing against Morphy; but there is also Kt. takes Kt., from the adoption of which spring several very interesting variations. Black's game thereby becomes cramped, and must remain so for a considerable time; but, in opposition to several very able authorities, we are of opinion that, if properly conducted, the defence, through the advantage of the Pawn, will most certainly win.
9.f4Playing his favourite move at an early stage of the game.
11.f5Black's Queen's Bishop is now completely hemmed in, and time must be lost in extricating it.
14…h4If Black had taken P. with Q's B., White would have checked with Kt. at Kt's 6th, and gained an evident advantage.
15.Ng6+Most ably played; at once frustrating all the combinations of his opponent.
23.Nxd5One of those beautiful combinations for which Mr. Morphy is so famous, and which occur with equal frequency in his blindfold games as in those which he conducts with board and men before him.
J. Löwenthal, Morphy's Games of Chess (1860) · Public domain · source