[Event "?"] [Site "?"] [Date "2021.06.12"] [Round "?"] [White "White to play and win"] [Black "?"] [Result "*"] [Annotator "peter"] [SetUp "1"] [FEN "8/8/5Kpk/2p4p/1p2N2P/pP6/P7/1n6 w - - 0 1"] [PlyCount "15"] [EventDate "1999.??.??"] [SourceVersionDate "2020.04.01"] {[#]} 1. Ng5 {threatening mate by Kf7 followed by Kg8 and Nf7.} Nc3 (1... c4 { is too slow to defuse the threat} 2. Kf7 c3 3. Kg8 c2 4. Nf7#) (1... Nd2 2. Kf7 Nf3 {a knight sac to prevent mate} 3. Nxf3 Kh7 4. Ng5+ Kh8 5. Ne4 $18 c4 6. bxc4 b3 7. Nc3 $18) 2. Kf7 Nb5 (2... Ne4 {saccing the knight leaves a lost position} 3. Nxe4 Kh7 4. Nxc5 g5 5. hxg5 h4 6. Ne4 $18) 3. Kf8 $1 {losing a tempo in order to zugzwang Black} (3. Kg8 $2 Nd6 4. Kf8 Ne4 5. Nxe4 g5 { and it is Black who wins!}) 3... Nd6 (3... c4 4. bxc4 Nd6 (4... b3 5. cxb5 bxa2 6. Kg8 a1=Q 7. Nf7#) 5. Kg8 b3 6. c5 bxa2 7. cxd6 a1=Q 8. Nf7#) 4. Kg8 { zugzwang} c4 5. bxc4 b3 6. c5 b2 (6... bxa2 {leads to the same finish}) 7. cxd6 b1=Q 8. Nf7# *