www.arves.org - Solidarity 2011-2012

Studies awarded for the Magazine tournament Solidarity 2011-2012.

[Event "3.p Sredba na Solidarnosty 17"] [Site ""] [Date "2011"] [Round ""] [White "Peter Krug"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "2N2k2/1q3p2/6P1/6NK/5p2/4n3/4P3/6R1 w - - 0 1"] [PlyCount "45"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 1. Nh7+ Kg7 2. gxf7+ Kxh7 3. f8=N+ $1 {Not immediately clear why can not to promoute the queen. Let's see what happens in this case:} (3. f8=Q $2 Qd5+ 4. Kh4 Nf5+ 5. Kh3 Qe6 $1 6. Kg4 Nd4+ 7. Kh4 Nf3+ 8. exf3 Qf6+ {(Qh3)=}) 3... Kh8 4. Ne7 $1 Qb5+ 5. Kh6 Nf5+ 6. Nxf5 Qxe2 $1 (6... Qxf5 7. Ng6+ $18) 7. Ng6+ Kg8 8. Nxf4+ Kh8 9. Ra1 $1 ({loss of time} 9. Ng6+ Kg8 10. Nf4+ Kh8 11. Ra1 Qh2+ 12. Kg5) (9. Rc1 $2 Qa6+ 10. Ng6+ Kg8 11. Rc7 Qa1 $1 12. Rc8+ Kf7 13. Rf8+ Ke6 $11) 9... Qh2+ (9... Qe4 10. Rf1 Qxf5 11. Ng6+ Kg8 12. Ne7+ $18) 10. Kg5 $1 ( 10. Kg6 Qh7+ 11. Kf6 Qb7 $1 $11) 10... Kg8 11. Re1 $1 (11. Ra8+ $2 Kf7 12. Ra7+ Kf8 13. Ne6+ Kg8 14. Rg7+ Kh8 $11) 11... Qd2 12. Re8+ (12. Re7 $2 Qc1 $1 $11) 12... Kh7 13. Re7+ Kh8 14. Kg6 Qa2 15. Rh7+ Kg8 16. Rd7 Kh8 17. Kg5 Kg8 18. Rg7+ Kf8 19. Re7 Qd2 20. Kg6 Qxf4 21. Rf7+ Kg8 22. Ne7+ Kh8 23. Rh7# 1-0

[Event "2-3.sp.prize  Sredba na Solidarnosty 17"] [Site ""] [Date "2011"] [Round ""] [White "Peter Krug"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "6r1/pp1K4/5P2/PP6/p2R4/1p5R/2b2pN1/6k1 w - - 0 1"] [PlyCount "51"] [EventDate "2011"] [SourceDate "2005.01.24"] 
 1. f7 Rg7 2. Ne3 f1=Q 3. Nxf1 Rxf7+ 4. Kd8 $3 {unexpected logical choice (looking ahead)} ({Thematic try} 4. Kd6 $2 Rxf1 5. Rg4+ Kf2 6. Rxa4 b2 7. Ra2 b1=Q 8. Rxc2+ Ke1 9. Rhh2 {now, if compare this position to the same move in the main line all will be clear - Black has two ways for win 9.Qb4+, or Qd1+}) (4. Kc8 $2 Bf5+ 5. Kb8 Bxh3 $19) 4... Rxf1 5. Rg4+ $1 {logical maneuvre - It is necessary to force the bK to take the 2nd rank} (5. Rxa4 $2 b2 6. Rg4+ Kf2 7. Rb4 b1=Q 8. Rxb1 Bxb1 $19) 5... Kf2 6. Rxa4 b2 7. Ra2 b1=Q 8. Rxc2+ {now, if Qxc2 will be Rh2+, because bK on f2} Ke1 9. Rhh2 {compare wih the thematic try.} Qd1+ {and White King has the neutral square} 10. Ke8 $1 (10. Ke7 $2 b6 11. axb6 axb6 12. Rc6 Qa1 $1 13. Re6+ Kd1 {and easy win of Black}) 10... Rg1 ( 10... b6 11. a6 Rg1 12. Ke7 {mutual zugzwang with BTM} Rg7+ 13. Kf8 $11) 11. Ke7 $1 {again mutual zugzwang with BTM} b6 12. a6 Rg7+ (12... Rf1 13. Ke8 $1 { zz BTM} (13. Ke6 $2 Qg4+ $19) 13... Rg1 14. Ke7 {positional draw}) 13. Kf8 Rh7 $1 14. Rxh7 Qd8+ 15. Kf7 $1 (15. Kg7 $2 Qg5+ 16. Kh8 Qf6+ $19) 15... Qd7+ 16. Kg8 Qg4+ 17. Kh8 Qd4+ 18. Kg8 (18. Rg7 $2 Qd8+ 19. Kh7 Qd3+ $19) 18... Qd8+ 19. Kf7 Qd7+ 20. Kg8 Qe8+ 21. Kg7 Qe5+ 22. Kg8 Qg5+ 23. Rg7 Qd8+ 24. Kf7 Qd7+ 25. Kf6 Qd6+ 26. Kf7 {positional draw. Known idea Gurgenidze 1975 (added 2 pawns)} *