Encyclopaedia of Chess Endgames
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Rb4!
pv 1. ... Rb4 2. cxd6+ Kf7 3. Rh7+ Kf6 4. d7 Rd4+ 5. Ke3 Bb5 6. g3 Rd3+ 7. Kf2 a5 8. g4 a4 9. Ke2
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