Leaving the king under a cloud. Preferable was 6.Qxf6 Rxf6 7.Nd1 heading for e3.

Now Black has an automatic attack.

Exchanging the bishops in preparation for Ne3-f5.

1...f5? 2.exf5 Bxf5 3.Bxf5 Rxf5 4.Rxd6! +-

Both 3...Nxe4? 4.Nf5 and 3...Qxe4? 4.Qxe4 Nxe4 5.Nd5 fail tactically for Black.

Preparing Red1, with a pleasant advantage thanks to the opponent's light square weaknesses.

Creating a protected square on d6, which can be exploited by the knight via d2-c4-d6, or even by the rook.

The desired 1...f5 permits 2.exf5! exf5 3.Rd6! with strong pressure; e.g. 3...f4 4.Bd3+! Kh8 5.Bg6+-

After 6...Rb8 7.Nab6 Nf4 8.Nxc8 Rfxc8 9.Nd6 White is also better, but at least material remains even.

White won without any problems.