www.arves.org - Borodavkin-50 JT 2019

Studies awarded for the Sergey Borodavkin 50 Jubilee Tournament 2019.

Borodavkin, Sergey 1969

[Event"1 Prize, S.Borodavkin-50 JT 2019"] [Site ""] [Date "2020"] [Round ""] [White "O.Pervakov and A.Stavrietsky"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "7k/p4Rq1/P4p1p/Q1np1P1P/3p1KPb/1p3P2/1PP5/4r3 w - - 0 1"] [PlyCount "55"] 
 1. Qd8+ {Первый отказ от взятия ферзя} (1. Rxg7 $2 bxc2 $19) 1... Qg8 2. Rf8 Kh7 $1 3. Qc7+ $1 (3. Rxg8 $2 Nd3+ $1 4. cxd3 Bg3+ $1 5. Kxg3 Rg1+ 6. Kf4 Rxg4+ 7. Rxg4 $11) 3... Qg7 4. Rf7 Kh8 (4... Qxf7 5. Qxf7+ Kh8 6. Qf8+ Kh7 7. Qxc5 $18) 5. Qb8+ $1 ({После} 5. Rxg7 $2 Nd3+ $1 6. cxd3 Bg3+ $1 7. Kxg3 Rg1+ 8. Kh3 Rh1+ 9. Qh2 {(иначе бешеную ладью не укротить)} Rxh2+ 10. Kxh2 Kxg7 $11 { пешечный эндшпиль ничеен}) 5... Re8 $1 {Необходимая жертва} ({В случае} 5... Qg8 6. Rf8 Kh7 7. Qxa7+ $1 Qg7 8. Rf7 Kh8 9. Qb8+ Qg8 10. Rf8 Kh7 11. Rxg8 $1 Nd3+ 12. cxd3 Bg3+ 13. Kxg3 Rg1+ {ферзь вносил решающий вклад в победу белых:} 14. Kh3 $1 Rh1+ 15. Qh2 $18) 6. Qxe8+ Qg8 7. Rf8 Kh7 8. Qe7+ $1 ({ Тематически ложно} 8. Qg6+ $2 Qxg6 9. fxg6+ Kg7 10. Rf7+ Kg8 $11) ({Пат после } 8. Rxg8 $2 Nd3+ $1 9. cxd3 Bg3+ 10. Kxg3 $11) 8... Qg7 9. Rf7 Kh8 10. Qd8+ ({ Снова пат при} 10. Rxg7 $2 Nd3+ 11. cxd3 Bg3+ 12. Kxg3 $11) 10... Qg8 11. Rf8 Kh7 12. Qc7+ Qg7 13. Rf7 Kh8 14. Qb8+ Qg8 15. Rf8 Kh7 16. Qxa7+ Qg7 17. Rf7 Kh8 18. Qb8+ $1 ({Бессмысленно} 18. Qa8+ Qg8 19. Rf8 Kh7 {, и} 20. Qb7+ $2 { ведет даже к поражению:} Nxb7 21. Rxg8 Nc5 $1 22. Rc8 Nxa6 23. cxb3 Nb4 $19) 18... Qg8 19. Rf8 ({После} 19. Qxg8+ Kxg8 20. a7 bxc2 21. a8=Q+ Kxf7 22. Qa7+ Kg8 {белые вынуждены смириться с вечным шахом, ибо даже проигрывает} 23. Qxc5 $2 c1=Q+) 19... Kh7 20. Qc7+ Qg7 21. Rf7 Kh8 22. Qd8+ Qg8 23. Rf8 Kh7 24. Qe7+ Qg7 25. Rf7 Kh8 26. Qe8+ Qg8 27. Rf8 Kh7 28. Qg6+ $1 { с решающим, 14-м отказом от взятия черного ферзя!} 1-0

[Event"2 Prize, S.Borodavkin-50 JT 2019"] [Site ""] [Date "2020"] [Round ""] [White "M.Micaloni and A.Rusz"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/1P2p3/4p3/8/K7/B7/2k4b/8 w - - 0 1"] [PlyCount "43"] 
 1. Bc5 $1 {The white bishop must hurry to reach... the h2 square!} ({ Thematic try:} 1. Bxe7 $2 Bb8 $1 2. Bh4 e5 3. Bg3 { Now the bishop is too close to the black king.} Kd3 4. Kb5 Ke3 5. Kc6 Kf3 6. Bh2 Kg2 $1 $11 {catching the bishop}) 1... Bb8 $1 {The black bishop makes an anticritical move preparing the advance of the e6 pawn.} 2. Bg1 $1 e5 3. Bh2 $1 {This is white's counter-play: it pins the pawn!} Kd3 4. Kb5 Kd4 (4... Ke3 5. Kc6 Kf3 6. Kd5 Kg2 {As in the thematic try, but now the bishop escapes.} 7. Bxe5 $18) 5. Kc6 Kc4 {This position is a cyclic zugzwang with WTM. White will try to return to the same position but with BTM.} 6. Bg3 $1 ({Logical try:} 6. Bg1 $2 e4 7. Bb6 Kd3 $11 {Position X'}) 6... Kd3 7. Kd7 $1 (7. Kd5 $2 e6+ $1 8. Kxe6 (8. Kc6 Ke3 (8... Ke4) 9. Kd7 Kf3 10. Bh2 Kg2 $11) 8... Kc4 $1 9. Bxe5 Kb5 (9... Kc5) 10. Bxb8 Kb6 $11) 7... Bd6 8. Kc8 $1 { 1st Triangulation ( clockwise )} (8. Kd8 $2 Kc4 9. Bf2 Kb5 $11) 8... Kd2 { The black king has to be in touch with the e3 square.} 9. Kd8 $1 Kd3 ({ The black king cannot triangulate because it would block the pawn's way to promotion. White would have enough time to sacrifice the bishop on e7:} 9... Ke2 10. Bh4 e4 11. Bxe7 $1 Bb8 12. Kc8 Ba7 13. Bc5 $1 $18) 10. Kd7 $1 Kc4 11. Kc6 Bb8 12. Bh2 $1 {Cyclic zugzwang - BTM} (12. Bf2 $2 e4 13. Bb6 Kd3 $10 { position X'}) 12... Kd4 (12... Kd3 13. Kd5 e6+ $1 14. Kc6 $1 Kc4 15. Bg3 $18) 13. Kd7 Kd3 14. Kd8 $1 {2nd Triangulation ( anti-clockwise )} (14. Kc8 $6 Bd6 15. Kd8 $2 Kc4 16. Bg1 Kb5 $11) 14... Bd6 15. Kc8 $1 Kd2 ({ The counter-attack fails because the white king is on c8:} 15... Kc4 16. Bg1 Kb5 17. Ba7 e4 18. Bb8 $18) 16. Kd7 $1 (16. Bg1 $2 e4 17. Bb6 e3 $11) 16... Kd3 17. Kc6 Kc4 {If we compare this position to the cyclic zugzwang, the only difference is that the black bishop is on d6 instead of b8.} 18. Bg1 $1 { Unpinning the pawn!} e4 19. Bb6 Bb8 { The black bishop must lose a precious tempo...} 20. Kd7 Kd3 { Position X - White has won a tempo! (see Position X' from the logical try)} 21. Kc8 Bd6 22. Bc7 1-0

[Event"sp. Prize, S.Borodavkin-50 JT 2019"] [Site ""] [Date "2020"] [Round ""] [White "Pavel Arestov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/8/7p/3p2p1/1k3p2/8/3KR3 w - - 0 1"] [PlyCount "25"] 
 1. Rf1 $1 (1. Rh1 $2 g3 $1 2. Rh3 h4 $1 $19) 1... h4 ({B)} 1... Kc3 2. Ke1 $1 d3 3. Kf2 Kd4 $1 (3... d2 4. Ke3 h4 5. Rd1 $11) 4. Rd1 $1 Ke4 5. Kg3 $1 (5. Re1+ $2 Kf4 $1 6. Rd1 g3+ $19) 5... Ke3 (5... h4+ 6. Kxh4 $1 Ke3 7. Kg3 $1 $11) 6. Re1+ Kd4 7. Rd1 $1 Kc3 8. Rc1+ Kd2 (8... Kd4 9. Rd1 $1 Ke3 10. Re1+ { positional draw}) 9. Rh1 $1 (9. Ra1 $2 Ke2 $1 $19) 9... Kc2 10. Rxh5 $1 d2 11. Rc5+ Kd3 12. Rd5+ Ke2 13. Re5+ Kf1 14. Rd5 Ke2 15. Re5+ {positional draw}) 2. Kd2 $1 (2. Ke1 $2 d3 {(Kc2) -+}) 2... Kc4 (2... h3 3. Ke1 $1 d3 4. Kf2 d2 5. Kg3 $1 h2 $1 6. Kxg4 $1 (6. Kxh2 $2 Kc2 $19) 6... Kc2 7. Kxf3 d1=Q+ 8. Rxd1 Kxd1 9. Kg2 $11) 3. Ke1 $1 d3 4. Kf2 d2 5. Ke3 $1 Kc3 6. Rd1 $1 f2 $1 (6... h3 7. Rxd2 $11) 7. Kxf2 g3+ 8. Kf3 $1 (8. Ke2 $2 g2 $19) 8... Kd3 $1 (8... Kc2 $2 9. Ke2 $18) 9. Ra1 $1 (9. Rh1 $2 Kc2 $19) 9... Kc2 10. Ra2+ Kc1 11. Ra1+ Kb2 12. Rd1 $1 Kc3 13. Ra1 $1 {positional draw} 1/2-1/2

[Event"2 hm. S.Borodavkin-50 JT 2019"] [Site ""] [Date "2020"] [Round ""] [White "M.Minski and S.Nielsen"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "4q2k/2P5/5P2/2B3K1/1b2b3/8/8/2Q5 w - - 0 1"] [PlyCount "17"] 
 {Black is threatening 1...Qg6+ or 1...Qe5+.} 1. Kh4 {Threatening 2. Qh6+} (1. Bxb4 $2 Qg6+ (1... Qe5+)) 1... Bh7 (1... Kh7 2. Bxb4 $18) 2. c8=Q ({After} 2. Be7 $2 {Black creates af known fortress} Bxe7 3. c8=Q Bxf6+ 4. Kg4 Qxc8+ 5. Qxc8+ Kg7 $11) 2... Qxc8 3. Bd4 $1 { The threat of 4. f7# keeps White queen immune.} Qd8 $1 { Keeping an eye on d4 and pinning the pawn.} 4. Qc8 $1 { A queen sac on the square just vacated.} Ba5 (4... Qxc8 5. f7#) 5. Kg3 $1 { Moving out of the pin.} ({The more obvious} 5. Kh5 $2 {fails to} Bd3 $3 { and White cannot win a queen due to} 6. f7+ Kh7 7. Qxd8 (7. f8=N+ $11) 7... Bxd8 8. f8=Q $2 Be2+ {mating}) 5... Bc7+ (5... Kg8 6. Qc4+ (6. Qe6+) 6... Kh8 7. f7+) (5... Qg8+ 6. Kh2 $1 (6. Kf2 Bb6 $11 (6... Bc3 $11)) 6... Bc3 $5 7. f7+ (7. Qxc3 $2 Qf7 $11) (7. Bxc3 $2 Qxc8) 7... Bxd4 8. fxg8=Q+ { and Black does not get his fortress.}) 6. Kf2 (6. Kf3 $2 Be4+ $19) 6... Kg8 7. Qe6+ Kh8 (7... Kf8 8. Bc5+) 8. Qe8+ $1 Qxe8 9. f7+ 1-0

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