Encyclopaedia of Chess Endgames
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Rg1!
pv 1. Rg1 Bc2 2. Rc1 Kh3 3. Rxc2 Kh4 4. Ke1 Kg3 5. Rc1 Kf3 6. Rc6 Kg2 7. Rh6 Kg1 8. Ke2 Kg2
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