Encyclopaedia of Chess Endgames
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Rcc2!
pv 1. Rcc2 Kg1 2. Rg2+ Kf1 3. Raf2+ Ke1 4. Re2+ Kd1 5. Rd2+ Ke1 6. Rge2+ Kf1 7. Rf2+ Kg1 8. Rg2+ Kf1 9. Kh2 Ke1 10. Kg1 f4 11. Rge2#
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