🚀 go-pugleaf

I suggest 10. exd6+. This opens up the central file for the rook on f1 to
control.. Possible responses to d6+ include 10 ... Nxd6, a discovered attack on
the queen which fails to 11. Re1+ (loss of two minor pieces for the rook or
various forks as the king is exposed. 10 ... Kf6 would also lose to a
discovered attack/fork with 12. dxc7.

Qxd6 is out of the question as it loses the rook.

If William were to respond to exd6 with cxd6, a viable response would be 11.
gxf3, followed by 12. Re1 (forcing the knight aside) Despite the fact that gxf3
would expose the king, it is a safe risk as black is severely compromised with
his king in the open with checkmate not far behind.