Encyclopaedia of Chess Endgames
Click here for answer
Re7+!
pv 1. Re7+ Kf3 2. Kd7 f4 3. Kd6 Kg3 4. Rg7+ Kf2 5. Kd5 f3 6. Kc4 Ke1 7. Re7+ Kd2 8. Rf7 Ke3 9. Rf8 f2 10. Kc3 Ke2 11. Re8+ Kf3
menu