1234 Modern Endgames Studies
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Kb7!
pv 1. Kb7 c5 2. Kc6 c4 3. Nd5 Kg3 4. Kc5 Kxg2 5. Ne3+ Kf3 6. Nxc4 Nc2 7. a4 Na1 8. Nd6 Nc2 9. a5 Ne3
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