[Event "Troizky-150 MT"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "(1) Alexey Sochnev (RUS)"] [Black "?"] [Result "1-0"] [Annotator "1st Prize"] [SetUp "1"] [FEN "8/K2p3p/2p3PN/4kP2/4P3/8/p7/8 w - - 0 1"] [PlyCount "49"] [EventDate "2017.??.??"] 1. g7 a1=Q+ 2. Kb8 $3 ({Logical try:} 2. Kb7 $2 Qg1 3. g8=Q Qxg8 4. Nxg8 d5 $1 5. f6 Ke6 6. e5 d4 7. Nh6 d3 8. f7 $1 Ke7 9. e6 d2 10. Ng8+ $1 Kf8 11. Nf6 d1=Q 12. Nxh7+ $1 Ke7 $1 13. f8=Q+ Kxe6 14. Qf6+ Kd7 15. Nf8+ Ke8 16. Ne6 Qd6 $3 {zz } 17. Kc8 (17. Nc7+ Kd7 18. Qf7+ Qe7 19. Qf5+ Kd6 20. Qd3+ Ke5 21. Qe3+ Kf6 $11 ) 17... Qd7+ 18. Kb8 Qe7 $3 ({(The only way! It would be easy to make a mistake:} 18... Qd6+ $2 19. Kb7 $1 {zz as in the main solution}) 19. Nc7+ (19. Ng7+ Kd7 20. Qf5+ Kd6 21. Qd3+ Ke5 22. Qe3+ Kf6 23. Nh5+ Kf7 $11) 19... Kd7 $3 (19... Kd8 $2 20. Qf4 $1 {etc. as in the main solution}) 20. Qd4+ Qd6 21. Qg7+ Kd8 $1 22. Qg8+ Ke7 $1 23. Qg7+ Kd8 24. Qg5+ Kd7 {positional draw}) 2... Qg1 $1 (2... Kxe4 3. g8=Q Qf6 4. Qxh7 d5 5. Qg6 Qd8+ 6. Kb7 Qd7+ 7. Kb6 Qd8+ 8. Kxc6 $18) (2... Qa6 3. g8=Q Qb6+ 4. Kc8 Qa6+ 5. Kxd7 $18) 3. g8=Q Qxg8+ 4. Nxg8 d5 $1 (4... c5 5. Nh6 c4 6. Ng4+ Kxe4 7. f6 c3 8. Ne3 $1 Kxe3 9. f7 c2 10. f8=Q c1=Q 11. Qh6+ $18) (4... h5 5. Kc7 h4 6. Nh6 h3 7. Ng4+ Kf4 8. Nh2 $18) 5. f6 Ke6 6. e5 d4 7. Nh6 d3 8. f7 $1 (8. Ng4 $2 h5 9. Nf2 d2 10. Kc7 h4 $1 11. f7 Kxf7 12. Kd7 h3 13. e6+ Kg7 14. e7 h2 $11) 8... Ke7 9. e6 d2 {Systematic movement} 10. Ng8+ $1 (10. Nf5+ $2 Kxe6 11. f8=Q d1=Q 12. Ng7+ Ke5 $1 13. Qf5+ Kd6 14. Qf8+ Ke5 $1 15. Qf5+ Kd6 {positional draw}) 10... Kf8 (10... Kxe6 11. f8=Q d1=Q 12. Qf6+ Kd5 13. Qd8+ $18) 11. Nf6 d1=Q {Black excelsior!} 12. Nxh7+ $1 (12. Nd7+ $2 Ke7 13. f8=Q+ Kxe6 14. Nc5+ Ke5 15. Qe7+ Kf4 $11 (15... Kf5)) 12... Ke7 $1 (12... Kg7 13. f8=Q+ Kxh7 14. Qf7+ Kh6 15. e7 $18) 13. f8=Q+ Kxe6 14. Qf6+ Kd7 15. Nf8+ Ke8 16. Ne6 $1 Qd6+ (16... Qb3+ 17. Kc8 $18) 17. Kb7 $3 { zz} Qe7+ $1 18. Nc7+ $1 Kd8 (18... Kd7 19. Qxc6+ {With a king on b7, this is both possible and necessary.} Kd8 20. Qd5+ {with a quick mate}) 19. Qf4 $1 (19. Qh8+ $2 Kd7 20. Qd4+ Qd6 21. Qg7+ Kd8 $1 22. Qg8+ Ke7 23. Qg7+ Kd8 24. Qg5+ Kd7 $1 {positional draw, as in Logical try}) 19... Qa3 20. Qd4+ (20. Qg5+) 20... Ke7 21. Qg7+ Kd8 22. Ne6+ Ke8 23. Qg8+ Kd7 24. Qc8+ Kd6 25. Qf8+ {Judge Yuri Bazlov: “Large-scale study of the grandmaster level with a record range effect of foresight, original systematic movement, mutual tricks and bright finale”.} 1-0