1.White to move, how to continue to the attack?
2. Question for 2000+ players. Is there any defense for Black?
In the first position I think Rf4-h4 Qh3 is crashing through
e.g. a line is Rf4 b5 Rh4 Re8 Qh3 h6 (b4 Qh3 Kg8 Rh7 f6 g6 and mate) f6 Bf8 fxg7 Bxg7 Rf1 not allowing Bf6 and then gxh6
In the second position the tempting fxg6 hxg6 Qc5+ R1f2 Qg5+ doesn't work because of Qxg5 Bxg5 Rxf8 Rxf8 Rxf8 Kg7 Rf7+ and taking b7. Qc5 first doesn't work as well for the same reason.
So the only try is fxg6 hxg6 Rf7 where gxf7 is forced (Rxf7 Qg2 mate) threatening f8=Q, so Rf8 (Bf8!?). f7 and Nc3 is hanging so after Ne2 (Qh5 is probably best bxc3 bxc3 and it's complicated) Rxf7 and we win the f3 rook as well. Maybe I am missing some moves but it's definitely better option than the others.