[Event "Krug-50 JT (Section A)"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "(5) Branislav Djurasevic (SRB)"] [Black "?"] [Result "1-0"] [Annotator "3rd Prize"] [SetUp "1"] [FEN "8/4K2p/8/p4P2/P1kB4/8/1P2b3/8 w - - 0 1"] [PlyCount "41"] [EventDate "2017.??.??"] 1. f6 $1 (1. Bc3 $2 Kb3 2. f6 Bc4 $1 $11 {Pawn h7 is now ready to run!}) 1... Bh5 2. Bc3 (2. Bb6 $2 Kb4 $11) 2... Kb3 3. Bxa5 Kxa4 4. Bc3 $1 {Preventive protection of the b2 pawn.} Kb3 $1 (4... Bg6 5. f7 $1 Bxf7 6. Kxf7 h5 7. Ke6 h4 {And we reach a position from a study by G. Zakhodyakin, 64, (1934), ID=68578 in hhdbv.} 8. Kd5 h3 9. Kc4 h2 10. Bb4 h1=Q 11. b3#) 5. Kf8 $1 Bg6 (5... Kc4 6. Kg8 $1 {Immediately losing a tempo.} Bg6 7. Kg7 $18 {See the main line}) 6. Kg7 Kc4 {cyclic zugzwang (WTM) In order to win, white needs to reach the same position but with the other side to move! To achieve this, white uses a seven-move-long manoeuvre.} 7. Bd2 $1 (7. Be5 $6 Kb3 {zugzwang Position X'}) 7... Kb3 8. Bc1 Kb4 (8... Kc2 $2 9. b4 $1 $18) 9. Bf4 $1 Kc4 10. Bd6 $1 Kd5 ( 10... Kd4 $2 11. f7 $1 Bxf7 12. Kxf7 $18) 11. Bb4 $1 Kd4 (11... Ke6 $2 12. Bc3 Be8 13. Kxh7 $18 {Two pawns up is a technical win for white.}) (11... Kc4 $2 12. Bc3 $1 $18) 12. Be1 $3 {The crucial and the fastest move for losing another tempo.} (12. Ba5 $6 {Waste of time.} Kd5 13. f7 $2 Bxf7 14. Kxf7 h5 15. Kg6 h4 $11) 12... Kc4 (12... Kd5 13. f7 $1 Bxf7 14. Kxf7 h5 15. Kg6 h4 16. Bxh4 $18) 13. Bc3 $1 {cyclic zugzwang (BTM)} Kb3 (13... Kd5 14. f7 $1 Bxf7 15. Kxf7 h5 16. Bf6 $18) 14. Be5 $1 {Position X zugzwang The bishop controls both b2 and h2.} Kc4 15. f7 $1 {Finally this move works!} Bxf7 16. Kxf7 $18 {e.g.} h5 17. Kg6 h4 18. Kg5 h3 19. Kg4 h2 20. Bxh2 Kb3 21. Be5 1-0