Encyclopaedia of Chess Endgames
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Rd1+!
pv 1. Rd1+ Kc7 2. Rc3+ Kb6 3. Rb1+ Rb2 4. Rb3+ Ka5 5. R3xb2 Rxb2 6. Rxb2 Ka4 7. Kh1 Ka3 8. Rb8 Ka2 9. Ra8+ Kb1 10. Rc8 Ka1 11. Ra8+ Kb1
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