Encyclopaedia of Chess Endgames
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b7!
pv 1. b7 Re4 2. Be5 Re2+ 3. Kg3 Rb2 4. b8=Q Rxb8 5. Bxb8 Kb2 6. Be5 Kxa1 7. Bxd4+ Kb1 8. Kh4 Kc1 9. Kg5
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