Endgame Puzzle - Series 215

               

( 2R + 3P + K vs R + N + 4P + K )

Black to move

GM_Knockout said ;

1. ...Rxb5+!! 
2. axb5 c4!
3. b6 Kc6
4. Rb1 Kb7
5. Kc2 Ne2!!
6. Rh1 d3+!
7. Kd2 Kxb6
8. Rxh3 c3+
9. Kxd3 Nf4+
10. Kxc3 Nxh3
11. Kd4 Kc6!!
12. Ke4 Kd6
13. Kd4 Nf4
14. Ke4 Ke6
15. Kd4 Nd5!
16. Ke4 Nf6+
17. Kd4 Kd6!!
18. f4 gxf4
19. g5 Nh5!
20. g6 Ke7
21. g7 Nxg7
22. Ke4 Nh5

OR

1. ...Rxb5+!! 
2. axb5 c4!
3. b6 Kc6
4. Rb1 Kb7
5. Kc2 Ne2!!
6. Rh1 d3+!
7. Kd2 Kxb6
8. Rxh3 c3+
9. Kxd3 Nf4+
10. Kxc3 Nxh3
11. Kd4 Kc6!!
12. Ke5 Kc5!
13. f4 Nxf4
14. Kf6 Nh3
15. Ke5 Kc4!!
16. Ke4 Kc3
17. Ke2 Nf4!
18. Ke4 Kd2
19. Kf5 Nh3
20. Ke4 Ke2

- White resigned 0-1