[Event "EG-50"] [Site "?"] [Date "2016.??.??"] [Round "?"] [White "(3) Oleg Pervakov (RUS)"] [Black "?"] [Result "1/2-1/2"] [Annotator "1st Prize"] [SetUp "1"] [FEN "4K3/k3N3/p7/3p1N2/2r3b1/1R6/q2pn3/4BQ2 w - - 0 1"] [PlyCount "20"] [EventDate "2016.??.??"] 1. Qf2+ $1 ({Try} 1. Bf2+ $2 Ka8 $1 2. Rb6 Qa4+ 3. Kd8 Bxf5 4. Nxf5 Nd4 $1 5. Bxd4 (5. Nxd4 d1=Q 6. Qxd1 Qxd1 7. Nc6 Rxc6 8. Rxc6 d4 $19) 5... d1=Q 6. Qf4 ( 6. Qg2 Qxd4 $1 7. Nxd4 Qa5 $1 8. Ke8 Rc8+ 9. Kd7 Qxb6 10. Kxc8 Qxd4 $19) 6... Rc8+ $1 7. Kxc8 Qe8+ 8. Kc7 Qc2+ 9. Kd6 Qcc8 $1 10. Kxd5 Qg8+ 11. Ke4 Qc2+ 12. Ke5 Qc7+ 13. Ke4 Qg2+ 14. Qf3 Qcc2+ 15. Ke3+ Qxf3+ 16. Kxf3 Qxf5+ $19) 1... d4 $1 (1... Ka8 2. Rb8+ $1 Kxb8 3. Qb6+ $11) 2. Nc6+ $1 (2. Nxd4 $2 Bd7+ $1 3. Kxd7 Rxd4+ $19) 2... Rxc6 3. Nxd4 Bd7+ $1 {Open counterplay} (3... Nxd4 $4 4. Qf7+ $1 $18) 4. Kxd7 (4. Ke7 $2 Nxd4 5. Qxd4+ Ka8 $19) 4... d1=Q ({After} 4... d1=R $5 {White builds a new battery:} 5. Qf7 $1 $11) 5. Bd2 $3 {The echo-sacrifice!} (5. Kxc6 $2 Nxd4+ 6. Qxd4+ Qxd4 $19 {, and no stalemate - bishop on the board!}) 5... Qaxd2 $1 (5... Qdxd2 6. Kxc6 Nxd4+ 7. Qxd4+ Qxd4 8. Rb7+ Ka8 9. Rb8+ $1 Kxb8 {stalemate}) 6. Kxc6 Qh1+ ({Main} 6... Qh6+ 7. Ne6+ Nd4+ 8. Qxd4+ $1 Qxd4 9. Rb7+ Ka8 10. Rb8+ $1 Kxb8 $11 {The 1st mirror ideal stalemate with pin knight}) ({Main} 6... Q1c1+ 7. Nc2+ Nd4+ 8. Qxd4+ $1 Qxd4 9. Rb7+ Ka8 10. Rb8+ $1 Kxb8 $11 {The 2nd mirror ideal stalemate with pin knight}) 7. Nf3+ Nd4+ (7... Qd4 8. Rb7+ Ka8 9. Rb8+ $1 Kxb8 10. Qg3+ $1 Nxg3 {stalemate} ) 8. Qxd4+ $1 Qxd4 9. Rb7+ Ka8 10. Rb8+ $1 Kxb8 $11 {And the 3rd mirror ideal stalemate with pin knight!} 1/2-1/2