Chess Puzzle - Series 2775

White to move. How should white proceed ?

Awonder Liang & Alex Bian 

( 2018 US Junior Chess Championship )

Source : chessdailynews.com

GM_Knockout said ;

1. Rc1!! Rc8
2. Rxc6! Rxc6
3. d7 Rc1+
4. Kg2 Rd1
5. d8=Q+ Rxd8
6. Bxd8

Or

1. Rc1!! Re8
2. Rxc6! bxc6
3. d7 Rb8
4. d8=Q+ Rxd8
5. Bxd8

- Black resigned 1-0