[Event ".p Halberstadt-MT"] [Site "?"] [Date "2016.??.??"] [Round "?"] [White "Van_der_Heijden=H Dobrescu=E"] [Black "148a"] [Result "1-0"] [Annotator "Hoetmer,Michel"] [SetUp "1"] [FEN "K1N5/8/N1k5/4p2p/3p1b1P/5P1Q/q1P5/8 w - - 0 1"] [PlyCount "45"] [EventDate "2016.??.??"] {[%evp 0,45,212,245,104,228,237,240,305,280,280,280,286,286,262,262,254,252, 262,267,262,244,254,254,292,291,262,270,278,266,258,222,288,288,224,288,238, 238,268,268,268,224,268,224,365,367,445,441]} 1. Qf1 $1 ({Logical try:} 1. Na7+ $2 Kb6 2. Qc8 Qxa6 3. Qe6+ Ka5 4. Qb3 $1 {Black is in zugzwang now, but} Bg3 $3 (4... Be3 $2 5. c3 {(c4), e.g.} dxc3 6. Qxc3+ Kb6 7. Qxe3+ $18) (4... Bh2 $2 5. c4 {(c3)} dxc3 6. Qxc3+ {e.g.} Kb6 7. Qc6+ Ka5 8. Qc5+ Ka4 9. Qc2+) (4... Bc1 $2 {e.g.} 5. c3 dxc3 6. Qxc3+ Kb6 7. Qc6+ Ka5 8. Qxc1) (4... Bd2 $2 5. Qa3+ { (Qa2+)} Kb6 6. Qd6+ Ka5 7. Qxe5+ Kb4 8. Qxd4+ $18) 5. c3 dxc3 6. Qxc3+ Kb6 $1 7. Qb4+ Kc7 8. Qe7+ Kb6 9. Qf6+ Ka5 $11) 1... Qg8 2. Nb8+ $1 Kc7 3. Qb5 {(Qa6)} Qxc8 4. Qc4+ (4. Qc5+ $2 Kd8 5. Qf8+ Kc7 6. Qe7+ Kb6 7. Qb4+ Kc7 8. Qc4+ { waste of time}) (4. Qc6+ $2 Kd8 5. Qf6+ Kc7 6. Qe7+ Kb6 7. Qb4+ Kc7 8. Qc4+ { waste of time}) 4... Kd8 5. Qf7 $1 {Black is in zugzwang now} Bh2 (5... Bd2 { (Bc1)} 6. Qf6+ (6. Qg8+ $2 Kc7 7. Qc4+ Kd8 8. Qf7 Bf4 $1 {and White must lose a tempo and put Black in zugzwang again} 9. Qf8+ Kc7 10. Qe7+ Kb6 11. Qb4+ Kc7 12. Qc4+ Kd8 13. Qf7) 6... Kc7 7. Qxe5+ Kb6 8. Qxd4+ $18 {e.g.} Kc7 9. Qc5+ Kd8 10. Qd6+ Ke8 11. Qxd2) (5... Be3 6. c4 {(c3)} dxc3 7. Qf8+ (7. Qf6+ Kc7 8. Qe7+ $1) 7... Kc7 8. Qe7+ Kb6 9. Qb4+ Kc7 10. Qxc3+ Kd8 11. Qxe3 $18) (5... Bg3 6. Qf8+ Kc7 7. Qc5+ Kd8 8. Qd6+ Ke8 9. Qg6+ Kf8 10. Qxg3 $18 {e.g.} Qxc2 11. Qxe5 Qa4+ 12. Kb7 Qb3+ 13. Kc7 Qxf3 14. Qxd4) 6. c4 {(c3)} dxc3 7. Qf6+ {(Qf8+)} Kc7 8. Qe7+ Kb6 9. Qb4+ Kc7 10. Qxc3+ Kd8 11. Qd2+ Kc7 12. Qc2+ $1 Kd8 13. Qxh2 Qc3 14. Qe2 $1 (14. Qa2 $2 Qxf3+ 15. Ka7 Ke7 $11) 14... Kc7 15. Qf1 $1 (15. f4 $2 Qa5+ 16. Na6+ Kd6 17. f5 e4 18. Ka7 Qxf5 $11) 15... Qa3+ (15... Qa5+ 16. Na6+ Kb6 (16... Kd6 17. Ka7 $18) 17. Qb1+ Kxa6 18. Qb7#) 16. Na6+ Kb6 17. Qf2+ Kb5 ( 17... Kxa6 18. Qa7+ Kb5 19. Qxa3 $18) 18. Kb8 $1 Qb3 (18... Qxa6 19. Qe2+ Kb6 20. Qxa6+ Kxa6 21. Kc7 $18) 19. Nc5 Qf7 (19... Qb4 20. Nb7 $1 $18) 20. Nb7 Qf8+ 21. Kc7 Qe7+ 22. Kc8 Qe8+ 23. Nd8 1-0