Game I.
WHITE. BLACK.
1.P. to K’s 4th.1.P. to K’s 4th.
2.P. to Q’s 4th.2.P. takes P.
3.B. to Q. B’s 4th.3.K’s Kt. to B’s 3d.

You may also play here P. to K. B’s 4th, a move as yet, we believe, unanalysed. (See [Game II].) Black’s reply is the correct one, whereby he reduces the game to a position similar to one in the K. Kt.’s defence to the King’s Bishop’s game. (For B. to Q. Kt.’s 5th. (ch.) see [Variation A.])

4.P. to K’s 5th.4.P. to Q’s 4th.
5.B. to Q. Kt.’s 3d.5.Kt. to K’s 5th.

Retiring the Bishop thus is far better than taking the Kt. with K’s P. (See the [Giuoco Piano] for a similar position.)

6.K’s Kt. to K’s 2d.6.P. to Q. B’s 4th.

If you play 6. K’s Kt. to B’s 3d., Black will gain some advantage by B. to Q. Kt.’s 5th. (ch.)

7.P. to K. B’s 3d.7.Kt. to K. Kt.’s 4th.
8.Kt. to K. B’s 4th.8.P. to Q. B’s 5th.
9.B. to Q. R’s 4th. (ch.)9.Kt. to Q. B’s 3d.
10.B. takes Kt. (ch.)10.P. takes B.
11.Q. takes P.
Even game.

These are the moves given by Jaenisch, who seems to consider the position in Black’s favour.