[Event "JPA-85 JT"] [Site "?"] [Date "2017.??.??"] [Round "?"] [White "(4) Oleg Pervakov (RUS)"] [Black "?"] [Result "1/2-1/2"] [Annotator "1st Prize"] [SetUp "1"] [FEN "4n2k/1p6/7K/1p4N1/4p3/6Rp/1P1qPn1P/7Q w - - 0 1"] [PlyCount "35"] [EventDate "2017.??.??"] 1. Qe1 $1 Qd6+ (1... Qxe1 $2 2. Nf7#) 2. Ne6 $1 Qxe6+ 3. Rg6 Nf6 $1 (3... Ng4+ $4 4. Kg5 $1 Nef6 (4... Qe5+ 5. Kxg4 Kh7 6. Rb6 $1 $18) 5. Qh4+ Nh7+ 6. Qxh7+ Kxh7 7. Rxe6 $18) 4. Qc3 $1 {Pinning knight f6} (4. Qxf2 $2 Ng4+ 5. Kg5 Qxg6+ 6. Kxg6 Nxf2 $19) 4... N2g4+ $1 5. Rxg4 (5. Kg5 $2 Ne5 $1 {Unpinning knight f6. } 6. Rxf6 Qg4+ $19) 5... Qf5 $1 6. Rh4 (6. Rg5 $2 Qh7#) 6... b4 $1 {Black begins counterplay and wants to take the diagonal a1-d4 from the white queen.} 7. Qd4 b3 $1 (7... e3 $4 8. b3 $18) 8. Qc3 $1 ({1st logical try:} 8. e3 $2 { White wants to play for stalemate or perpetual check.} b6 $1 9. Qc3 b5 10. Qd4 b4 11. Qd8+ Ng8+ 12. Qxg8+ Kxg8 13. Rg4+ $1 Kf7 14. Rg7+ Ke6 15. Rg6+ Kd5 $1 16. Rg5 Qxg5+ 17. Kxg5 Kc4 18. Kf4 Kd3 $19) 8... e3 $1 (8... b6 $2 9. Rxh3 $18) 9. Qd4 $1 ({2nd logical try:} 9. Qc4 $2 Ng8+ 10. Qxg8+ Kxg8 11. Rg4+ $1 Kf8 12. Rg8+ $1 Ke7 13. Rg7+ Kd6 14. Rg6+ Kc7 15. Rg7+ Kb8 16. Rg8+ Ka7 $1 $19) 9... b6 $1 {Black wants to lose a tempo.} 10. Qc3 $1 ({3rd logical try:} 10. Qd8+ $2 Ng8+ 11. Qxg8+ Kxg8 12. Rg4+ $1 Kf7 13. Rg7+ Ke6 14. Rg6+ Kd7 15. Rg7+ Kc6 16. Rg6+ Kb7 17. Rg7+ Ka6 $1 $19) (10. Rxh3 $2 Qxh3+ 11. Kg5 Qg2+ $1 12. Kf5 (12. Kxf6 Qg7+ $19) 12... Qd5+ 13. Qxd5 Nxd5 14. Ke4 Nc3+ $1 $19) 10... b5 11. Qd4 b4 {Now white is in zugzwang! But...} 12. Qd8+ $1 (12. Qc4) 12... Ng8+ 13. Qxg8+ Kxg8 14. Rg4+ $1 Kf8 (14... Qxg4 {stalemate}) 15. Rg8+ $1 Ke7 (15... Kxg8 {stalemate}) 16. Rg7+ Kd6 (16... Kf6 17. Rf7+ $1 Kxf7 {stalemate}) 17. Rg6+ Ke7 18. Rg7+ {Perpetual check or stalemate} 1/2-1/2