Mate in 17

White to play and mate in 17 moves.

1. e3 Rxe3
2. c3 Rxc3
3. Ka2 Ra3+
4. Kb1 Ra1+
5. Kc2 Rc1+
6. Kd3 Rc3+
7. Ke2 Re3+
8. Kf1 Re1+
9. Kg2 Rg1+
10. Kf3 Rxg3+
11. Ke2 Re3+
12. Kd1 Re1+
13. Kc2 Rc1+
14. Kb3 Rc3+
15. Ka2 Rxc7
16. Rh8+ Rc8
17. Rxc8#

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