Today's game (nyanko)

Figure. 1 is one position in my today's game.
I was attacked in 6th line.
What do you move in this position?

figure. 1

I moved B-7g, +R-7i, Sx4e, quietly (figure. 2).

figure. 2

Instead Sx4e, if Gx6f, then Bx6e, Bx6e, +Rx7c, my Dragon was taken.

If the opponent will Lx6g+ in figure. 2, Bx2b, Kx2b, +Rx7i.

The real game proceeded K*6e, Sx3d, Kx7g+, K*3e, Lx6g+, P-6b+, B-6f (figure. 3).

I attacked towards the opponent's king while the opponent takes my Bishop and Gold in left side, as proverb says "In the endgame speed is more important than material."

Can you mate the opponent's king in figure. 3?

figure. 3