Freeing the e4-square for the knight. The game continued:

Black resigned in view of 15...Bxb6 16.Ba4+ Kd8 17.Nf7#

Heading for the protected square at h4 and taking control of the whole h4-d8 diagonal.

Black is also better after 2.Ne3 Qh4 , preparing Nh5-f4.

Eyeing the f4-square.

Preparing ...Nf7-g5, with a clear advantage thanks to his more active pieces and White's dark square weaknesses.

Heading for the protected square at f6.

1...0-0-0?! 2.Rxg3! hxg3 3.Nxe5 with compensation – Alekhine.

By using some minor tactics White secures the e5-pawn.