[Event "Internet (www.twitter.com)"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "Surya Sekhar Ganguly"] [Black "(Fortress 3)"] [Result "1-0"] [Annotator "correction by Rusz"] [SetUp "1"] [FEN "7k/8/7p/2p1p1pP/1pPpPpP1/1P1P1P2/4K3/2N5 w - - 0 1"] [PlyCount "37"] [EventDate "2017.??.??"] 1. Kd2 $1 (1. Na2 $6 Kg7 (1... Kg8) 2. Nxb4 $2 cxb4 $11) 1... Kg7 2. Ne2 Kf7 3. Ng1 Kf6 4. Nh3 Ke6 5. Nf2 (5. Nxg5+ $2 hxg5 $11) 5... Kf6 6. Nd1 $1 {This move explains why we have not chosen 1.Kd1?!} Ke6 7. Nb2 Kd6 8. Na4 Kc6 9. Kc1 $1 { Another precise move which puts black into zugzwang.} Kd6 10. Nb6 Ke7 11. Nd5+ ({minor dual} 11. Nc8+ Ke6 12. Na7 Kd7 13. Nb5) 11... Ke6 12. Nc7+ Kd7 13. Nb5 Kc6 14. Na3 $1 {Preparing this sacrifice was the reason of moving the white king to the c-file.} Kd6 15. Nc2 $1 {This move explains why we have not chosen 9.Kc2?!} Ke6 16. Ne1 Kf6 17. Ng2 Ke6 18. Kd1 (18. Kd2) 18... Kf6 19. Nh4 $1 1-0