WHITE.BLACK.
1.P to K 41.P to K 4
2.P to K B 42.P takes P
3.Kt to K B 33.P to K Kt 4
4.B to B 44.P to Kt 5
5.Kt to K 5...

This move constitutes the Salvio attack. White

attacks Black's K B P, intending to obtain a compensating advantage for being compelled to move his King without castling.

...5.Q to R 5: ch.
6.K to B sq.6.Kt to Q B 3
7.B takes P: ch.7.K to K 2

Better here, as in most cases, than 7.... K to Q sq., for it keeps an attack upon the B in case the Kt has to move.

8.Kt takes Kt: ch.8.Q P takes Kt
9.B to Kt 39.Kt to B 3
10.P to Q 310.Kt to R 4

Black has by far the better position.

THE KIESERITZKY GAMBIT.

Here the opening moves are again: 1. P to K 4, P to K 4; 2. P to K B 4, P takes P; 3. Kt to K B 3, P to K Kt 4. If White plays 4. B to B 4, Black can play either 4. ... B to Kt 2, thus consolidating his King's pawns, which are difficult to break up, or 4. ... P to Kt 5, with the consequences shown in the Muzio and Salvio. To obviate this, White plays now 5. P to K R 4. Black's Knight's pawn cannot be defended with P to K R 3, the Bishop not being yet at Kt 2. Therefore Black's best course (B to K 2 not being good) is 5. ... P to Kt 5, to which White replies 6. Kt to K 5—the Kieseritzky, or 6. Kt to Kt 5, the Allgaier, to be considered subsequently.