Endgamepuzzle - Series 8

White to move

GM_Knockout said ;

1. Rc2+!! Kb7
2. Rc4! Rd1
3. Kf7 Rf1+
4. Ke6 Re1+
5. Kd6 Rd1+
6. Ke5 Re1+
7. Re4 Rxe4
8. Kxe4 Kc7
9. e8=Q

Or

1. Rc2+!! Kb6
2. Kd8 Re1+
3. Kc8 Re1
4. Rc7 Re6
5. Kd8 Re1
6. Rd7 Kc5
7. e8=Q

Or

1. Rc2+!! Kb7
2. Rc4! Kb6
3. Kd8 Rd1+
4. Kc8 Re1
5. Rc7 Re6
6. Kd8 Re1
7. Rd7 Kc5
8. e8=Q

Or

1. Rc2+!! Kb7
2. Rc4! Rf1
3. Kd7 Rd1+
4. Ke6 Re1+
5. Kd6 Re2
6. Rc5 Rd2+
7. Rd5 Re2
8. Kd7 Kb6
9. e8=Q

- Black resigned 1-0