Training game fun

This is a position from my training game with one of the best 3rd graders in BC.

​Black to move.

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My young opponent quickly found 1. ...Rh1+  2. Kxh1 b1=Q+ 3. Kh2 Qxc8 4.Qxc8 and coach Vas eventually outplayed his young opponent. End of story? Not so fast.

​What else can Black play?

1. ...Qxc8! and now 2. Qxc8 loses to b1=Q so, White has to play 2. Qxf7+ and he escapes with a draw because the Black King can't hide on the b-file, allowing Qxb2+ and picking up the rook on a1.

Homework:
Play it out and see if you can get away from checks by the White Queen.