Nxe4 d5 gives Black the bishop pair and control of the center.

Earlier, it would have been thought extravagant to part with the bishop pair for so little in return.

Bc4 giving White the advantage of the bishop pair in an open position.

Why give up the bishop pair with 9 Bc3?

White gets the bishop pair, Black a lead in development.

Nxg6 is a standard idea gaining White the advantage of the bishop pair.

Nxe4, but even on general grounds Black has the bishop pair and a solid position.

Qxg5, when White's bishop pair gives him a substantial advantage.

In the following moves White got a better position with a bishop pair and a mobile center.

White often plays to obtain the bishop pair, but not that way.

Nxe4 d5 gives Black the bishop pair and control of the center.

Earlier, it would have been thought extravagant to part with the bishop pair for so little in return.

Bc4 giving White the advantage of the bishop pair in an open position.

Why give up the bishop pair with 9 Bc3?

White gets the bishop pair, Black a lead in development.

Nxg6 is a standard idea gaining White the advantage of the bishop pair.

Nxe4, but even on general grounds Black has the bishop pair and a solid position.

Qxg5, when White's bishop pair gives him a substantial advantage.

In the following moves White got a better position with a bishop pair and a mobile center.

White often plays to obtain the bishop pair, but not that way.