WHITE.BLACK.
1.P to K1.P to K 4
2.P to Q 42.P takes P
3.P to Q B...

These moves constitute the Danish Gambit.

...3.P takes P
4.B to Q B 44.Kt to K B 3
5.Kt takes P5.B to Kt 5
6.Kt to K 26.Castles
7.P to K 57.Kt to K 5

(Or 7. ... P to Q 4, equally good, and leading to a livelier game.)

8.Castles8.Kt takes Kt
9.P takes Kt9.B to B 4

And White is better developed, for the pawn minus. Still Black has a tangible advantage.

The Centre Gambit.

WHITE.BLACK.
1.P to K 4.1.P to K 4
2.P to Q 42.P takes P
3.Q takes P3.Kt to Q B 3
4.Q to K 3...

Formerly the continuation was 4. Q to Q sq., Kt to B 3; 5. B to Q 3, P to Q 4, &c., but the text-move is now considered superior to the retreat of a developed piece, especially as from K 3 the range of the Queen's action on both sides should prove more advantageous to White.