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Studies awarded for the
Ceskoslovensky Sach 2021
tournament.
Also called:
Jana Lercha MT
[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.06"] [Round ""] [White "Minski, Martin"] [Black "1st prize"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/8/3q4/8/K4pN1/2k2B2/R7 w - - 0 1"] [PlyCount "27"] [EventDate "2021"] {reciprocal change of Ka3/Kb3 in solution and logical try of 6th and 9th move. } 1. Ra2+ Kb1 2. Rb2+ Ka1 3. Be1 $1 (3. Rb3 $2 Qa5#) 3... Qe5 $1 (3... Qd6+ 4. Rb4 Qd3+ (4... Qa6+ 5. Kb3 Qe6+ 6. Kc2 $11) 5. Rb3 Qa6+ 6. Kb4 Qb6+ 7. Kc3 f2 $1 8. Bxf2 Qxf2 9. Kc4 (9. Kb4 $2 Qd4+ $19) 9... Qf4+ 10. Kc5 (10. Kd5 $2 Qf7+ $19) 10... Ka2 (10... Qe5+ 11. Kc4 Qc7+ 12. Kd4 Qd6+ 13. Kc4 $11) 11. Rd3 $1 ( 11. Rc3 $2 Kb2 12. Rd3 Kc2 13. Rc3+ Kd2 $19) 11... Kb2 12. Kd5 $1 Kc2 13. Rc3+ $1 Kxc3 (13... Kd2 14. Ne4+ $11) 14. Ne2+ $11 {fork}) (3... Qa8+ 4. Kb3 Qd5+ ( 4... Qb8+ 5. Bb4 $11) 5. Kc2) 4. Rf2 $1 ({logical try:} 4. Ra2+ $2 Kb1 5. Rf2 Qxe1 6. Rf1 f2 7. Kb3 Kc1 $19 {with zugzwang for White}) ({logical try:} 4. Rh2 $2 Qxe1 5. Rh1 f2 6. Rf1 Kb1 7. Kb3 Kc1 $19 {with zugzwang for White}) 4... Qe7+ (4... Qe3+ 5. Ka4 $11 (5. Kb4 $2 Qxe1+ $19 {with check!})) (4... Kb1 5. Rf1 $11) 5. Ka4 $1 ({logical try:} 5. Kb3 $2 Qxe1 6. Rf1 f2 {zz} 7. Ka3 Kb1 8. Kb3 Kc1 $19 {with zugzwang for White}) 5... Qe8+ (5... Qxe1 6. Rf1 f2 7. Kb3 $11 {see main line}) 6. Ka3 $1 ({logical try:} 6. Kb3 $2 Qxe1 7. Rf1 f2 {zz} 8. Ka3 Kb1 9. Kb3 Kc1 $19 {with zugzwang for White}) 6... Qe7+ (6... Qxe1 7. Rf1 f2 8. Kb3 $11 {see main line}) 7. Ka4 Qxe1 8. Rf1 f2 9. Kb3 $1 {zz} ({logical ty:} 9. Ka3 $2 Kb1 10. Kb3 Kc1 {with zugzwang for White}) 9... Kb1 10. Ne4 $1 ( 10. Ka3 $2 Kc2 $19) 10... Kc1 (10... Qxf1 11. Nd2+ $11 {fork}) 11. Ng3 { with zugzwang for Black} Kd1 (11... Kd2 12. Rxf2+ $1 Kd3 (12... Kd1 13. Rf1 $11 ) 13. Rf3+ $11) 12. Kb2 {zz} Kd2 13. Rxf2+ $1 Qxf2 14. Ne4+ $11 {fork} 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.01"] [Round ""] [White "PolasekJaroslav and Vlasak,Emil and Navara,David"] [Black "2nd_3rd prize"] [Result "1-0"] [Annotator "Jara"] [SetUp "1"] [FEN "8/1K2k3/p1p5/P6p/8/8/1p2p3/5R2 w - - 0 1"] [PlyCount "71"] [EventDate "2021"] 1. Re1 {Hrozbou Vxe2+ bílý zabránil smrtelnému postupu pěšce c.} (1. Rh1 $2 c5) 1... Kd6 2. Kxa6 Kc5 3. Kb7 Kd4 4. a6 Kd3 5. a7 Kd2 6. a8=Q Kxe1 {[#]} 7. Qa2 $1 {Dáma se snaží probít na první řadu na b1, aby dala čas svému králi přispěchat na pomoc. Dostane se tam šachem přes pole f5, když černý král bude na f1(z f2 by ustoupil na e3 a dostal se k pěšci b2 s remízou). To je smysl následujících překvapujících manévrů} Kf1 8. Qf7+ Ke1 (8... Kg2 9. Qg6+ Kf2 (9... Kf3 10. Qd3+ $1 (10. Qxh5+ $2 Ke3 $11) 10... Kf2 11. Qd4+ {a dále jako v hlavní variantě}) 10. Qf6+ Ke3 (10... Kg1 11. Qg5+) 11. Qc3+ Ke4 12. Qe1 {to jsme již analyzovali u 14...Kg2} Kd3 13. Kb6 h4 14. Kc5 (14. Ka5) 14... h3 15. Kb4 h2 16. Ka3 $1 (16. Kb3 $2 b1=Q+ 17. Qxb1+ Kd2 $11 {a teď bílé dámě chybí pole b4}) 16... b1=Q 17. Qxb1+ Kd2 18. Qb4+ Kd1 (18... Ke3 19. Qe1) 19. Qd6+ Kc1 20. Qxc6+ Kd2 21. Qd5+ Ke3 22. Qh1 {a vyhraje}) 9. Qb3 Kf1 10. Qf3+ Ke1 (10... Kg1 11. Qe4 Kf2 12. Qd4+ { a dále jako v hl. var.}) 11. Qd3 Kf2 12. Qd4+ {a dále jako v hl. var.} (12. Qc2 $2 b1=Q+) 12... Kf1 (12... Kf3 13. Qc3+ Ke4 14. Qe1 {to jsme již analyzovali u 8...Kg2}) 13. Qf6+ Kg1 14. Qg5+ Kf2 15. Qc5+ $1 {nesmí krále pustit na e3, aby se přiblížil k pěšci b} (15. Qf5+ $2 Ke3 $1 16. Qb1 h4 17. Kb6 h3 18. Kc5 h2 $11 19. Kc4 h1=Q 20. Qxh1 Kd2) 15... Kg2 (15... Ke1 16. Qc2 Kf1 {a dále jako v hl. variantě}) 16. Qc2 Kf1 {[#]} 17. Qf5+ {až teď, když král nemůže na e3} Kg2 18. Qb1 Kf3 19. Kb6 $1 {musí černému nechat pěšce c6, který mu překáží} (19. Kxc6 $6 h4 20. Qd3+ Kf2 21. Qd4+ Kf1 22. Qf6+ Kg1 23. Qg5+ Kf1 24. Qf5+ Ke1 25. Qb1+ Kf2 26. Qxb2 h3 27. Qf6+ Kg2 28. Qg5+ Kf2 29. Qf4+ Kg2 30. Qe3 h2 $11 {v hlavní variantě s Pc6 bílý vyhraje}) 19... h4 (19... Ke3 20. Qe1 ({nebo} 20. Kc5 {a král stačí včas doběhnout na d2} h4 21. Kc4 h3 22. Kc3 h2 (22... Kf2 23. Kd2) 23. Qe1 (23. Kc2 {nedává smysl, stejně po} c5 {bude muset bílý hrát} 24. Qe1 {nebo Dh1}) 23... b1=Q 24. Qxb1 Kf2 25. Kd2) (20. Ka5) 20... h4 21. Kc5 ({na c3 jde jít komplikovaně i přes pole a5} 21. Ka5) 21... h3 22. Kc4 h2 23. Kc3 (23. Kb3 $2 {bílý král nestačí jít včas na d2} b1=Q+ 24. Qxb1 Kf2 25. Qf5+ Kg2 26. Qg4+) 23... b1=Q 24. Qxb1 Kf2 25. Kd2 Kg2 26. Qe4+ {to je o dost jednodušší} (26. Kxe2 {to je zbytečné, ale ilustruje další možnosti bílého} h1=Q 27. Qg6+ Kh3 28. Qh5+ Kg2 29. Qg4+ Kh2 30. Kf2 {a končí matem}) 26... Kg1 27. Qg4+ Kf2 28. Qxe2+) 20. Qd3+ ({na} 20. Kc5 {bílý čas nemá} h3 21. Kd4 (21. Kc4 Kf2 22. Qxb2 h2) 21... h2 (21... Kf2) 22. Kd3 Kg2 23. Kxe2 h1=Q 24. Qg6+ Kh3 25. Qh5+ Kg2 26. Qg4+ Kh2 27. Kf2 {teď černého zachrání pěšec b2} Qe1+ 28. Kxe1 b1=Q+ $11) 20... Kf2 21. Qd4+ Kf1 (21... Kf3 {ztrácí tempo} 22. Qc3+ Kf4 23. Qe1 h3 (23... Kf3 24. Kc5) 24. Kc5) 22. Qf6+ Kg1 23. Qg5+ Kf1 24. Qf5+ Ke1 (24... Kg2 25. Qe4+ Kf1 (25... Kg3 26. Qe3+) 26. Qh1+ Kf2 27. Qxh4+) 25. Qb1+ Kf2 26. Qxb2 {a bílý vyhraje, např.} h3 27. Qf6+ {a bílý získá pěšce e2 a kvůli svému pěšci c6 se černý nezachrání patem} Kg2 (27... Ke1 28. Kxc6) 28. Qg5+ Kf2 29. Qf4+ (29. Qh4+ Kg2 30. Qe1) 29... Kg2 30. Qe3 h2 31. Qxe2+ Kg1 32. Qg4+ Kf2 33. Qh3 Kg1 34. Qg3+ Kh1 {[#]} 35. Qf2 {Teď je vidět, proč se bílý v 25. tahu vyhnul braní pěšce c6. Bez něj by nyní byl černý v patu.} c5 36. Qf1# 1-0
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.10"] [Round ""] [White "Krug, Peter and Garcia,Mario"] [Black "2nd_3rd prize"] [Result "1-0"] [SetUp "1"] [FEN "R1N2k2/6n1/1N1K4/3PR3/5r2/8/3pp3/8 w - - 0 1"] [PlyCount "29"] [EventDate "2019"] [TimeControl "300"] 1. Nd7+ $1 (1. Ne7+ $2 Ne8+ $1 $11) (1. Rxe2 $2 d1=Q (1... Nf5+ $2 2. Ke5 d1=Q 3. Kxf4 $18) 2. Na7+ Kf7 3. Re7+ Kg6 $11) 1... Kf7 2. Ne7 $1 (2. Re7+ $2 Kg6 $1 $11) 2... Ne8+ 3. Rxe8 Kxe8 4. Ng6+ $1 (4. Nc6+ $2 Kf7 5. Rxe2 d1=Q 6. Rg2 Rf6+ 7. Nxf6 Kxf6 $11) 4... Kd8 ({main 1 :} 4... Kf7 5. Nxf4 $1 (5. Rxe2 $2 Rf6+ 6. Kc7 d1=Q 7. Nge5+ Kg7 8. Rg2+ Kh8 $1 9. Nxf6 Qc1+ 10. Kd7 Qc7+ 11. Kxc7 $11 { stalemate}) 5... e1=Q 6. Rf5+ Kg7 7. Rg5+ Kh8 (7... Kh6 8. Rg6+ Kh7 9. Nf6+ $18 ) 8. Nf6 d1=Q 9. Rg8#) 5. Rxe2 (5. Nxf4 $2 e1=Q $1 $11) 5... Rd4 6. Ne7 $1 { Switchback} ({Try :} 6. Nf4 $2 d1=Q $1 7. Rh2 Rxd5+ 8. Nxd5 Qa1 $1 {position (x)} 9. Nc5 Ke8 $1 10. Rh7 Qd1 $1 11. Ne6 Qxd5+ 12. Kxd5 {stalemate}) ({or} 6. Nf6 $2 Rxd5+ 7. Nxd5 d1=Q 8. Ra2 Qc1 $1 $11) 6... Rxd5+ (6... d1=Q {[%emt 0:00: 00]} 7. Nc6+ {[%emt 0:00:02]} Kc8 8. Re8+ Kb7 9. Nc5+ Kb6 10. Rb8#) 7. Nxd5 d1=Q 8. Ra2 $1 (8. Rg2 $2 Qh5 9. N7f6 Qf7 $1 $11) (8. Rb2 $2 Qc1 $1 $11) (8. Rh2 $2 Qa1 $1 $11 {position (x)}) 8... Qc1 9. Ra8+ $1 ({Try :} 9. Nc5 $2 Qh6+ $1 10. Ne6+ Kc8 11. Rb2 Qh7 $1 12. Nb6+ Kb7 13. Nd7+ (13. Nc5+ Ka7 14. Nbd7 Qg6+ 15. Kc7 Qg3+ 16. Kc8 Qg8+ $13) 13... Ka6 14. Nec5+ Ka5 15. Nb7+ Ka6 16. Kc7 Qg7 $1 $11) 9... Qc8 10. Ra7 $1 (10. Nb8 $2 Ke8 11. Nf6+ Kf7 $1 $11) 10... Qc1 ({main 2 :} 10... Ke8 11. Ne5 $1 Qb8+ (11... Qd8+ 12. Kc5 $1 Qc8+ 13. Kd4 Qd8 14. Rh7 $1 Qd6 15. Rh8+ Qf8 16. Nc7+ {/f6+-}) 12. Nc7+ Kf8 (12... Kd8 13. Nc6+ $18 {fork}) 13. Nd7+ {fork}) 11. Nc5 $1 (11. Nf8 $2 Kc8 $11) 11... Qh6+ 12. Ne6+ Kc8 (12... Ke8 13. Re7#) 13. Ne7+ Kb8 14. Nc6+ Kc8 15. Rc7# {Themes : Dominatio n- Culmination in mate - Elimination of the threat of stalemate} 1-0
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.10"] [Round ""] [White "Pasman, Michael"] [Black "4th Prize"] [Result "1-0"] [SetUp "1"] [FEN "7n/8/n2P2P1/5R2/3K4/8/b7/2b4k w - - 0 1"] [PlyCount "25"] [EventDate "2021"] 1. g7 $1 (1. Rf1+ $2 Kg2 2. Rxc1 Nxg6 3. d7 Nf8 $11) (1. d7 $2 Nb8 $1 {and if} 2. g7 {can play for example} Bb2+ 3. Ke3 Nxd7 4. Rf1+ Kg2 5. Rf2+ Kg3 6. Rxb2 Ng6 7. Rxa2 Nf6 8. Ra6 Ne5 $11) 1... Bb2+ (1... Ng6 2. Rf1+ Kg2 3. Rxc1 $18) ( 1... Kg2 2. d7) 2. Ke3 $1 Bxg7 3. d7 $1 Bd4+ $1 (3... Nf7 4. Rxf7 Bxf7 (4... Bd4+ 5. Kxd4) 5. d8=Q $18) 4. Kxd4 (4. Kd2 $2 Nf7 5. Rxf7 Bb6 $1 $11) 4... Nb8 $1 5. Ke3 $3 {Switchback} ({Logical try :} 5. d8=Q $2 Nc6+ 6. Ke3 Nxd8 7. Kf2 Bf7 8. Rf4 {Position X with knight on d8} Ng6 $11) 5... Nxd7 6. Kf2 $1 Bf7 { The only defence against mate} 7. Rf4 $1 {Position X with knight on d7} Ng6 { Again the only defence against mate} 8. Rxf7 Ndf8 (8... Nde5 9. Rh7+) 9. Kg3 $1 (9. Rf6 Kh2) 9... Kg1 10. Rf6 $1 {zz Reciprocal zugzwang position of Amelung} Ne5 11. Rxf8 Nd3 12. Kf3 Ne5+ 13. Ke4 1-0
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[Event "Ceskoslovensky sach 2021 "] [Site ""] [Date "2021.05"] [Round ""] [White "Amatzia, Avni"] [Black "1st HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "4r3/5b1R/8/8/4p1k1/6P1/6P1/7K w - - 0 1"] [PlyCount "15"] [EventDate "2021"] {[#]} 1. Rg7+ $1 (1. Rxf7 $2 e3 $19) 1... Bg6 $1 (1... Kf5 2. Rxf7+ $11) (1... Kh5 2. g4+ $1 (2. Rxf7 $2 e3) 2... Kh6 (2... Kh4 $4 3. Kh2 $18 {with mate}) 3. Rxf7 $11) 2. Rxg6+ Kf5 3. Ra6 $1 {the only move, far away from BK} (3. Rb6 $2 e3 4. Rb5+ Ke4 5. Kg1 Rf8 $1 6. Rb4+ Kd3 7. Rb3+ Kd2 8. Rb2+ Kd1 9. Rb1+ Kc2 10. Ra1 e2 11. g4 Rf7 $1 12. g5 Ra7 $19) 3... e3 4. Ra5+ $1 {an essential intermediate check} (4. Ra1 $2 e2 5. Re1 Kg4 6. Kh2 Re3 $19 {ZZ white to move}) 4... Kg4 (4... Ke4 5. Kg1 Rf8 6. Ra4+ Kd3 7. Ra3+ $11) 5. Kh2 $1 e2 6. Ra1 Re3 (6... e1=Q 7. Rxe1 Rxe1 $11 {stalemate}) 7. Re1 {ZZ black to move} Kf5 ({or} 7... Re6 8. Rc1 (8. Rb1) (8. Ra1) 8... Re3 9. Re1 {draw by repetition}) 8. Kg1 $11 {Themes - stalemate, reciprocal zugzwang, intermediate move, draw by repetition} 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.11"] [Round ""] [White "Aliev, Ilham"] [Black "2nd HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "3K1k2/2n5/p6P/8/8/8/8/B4r2 w - - 0 1"] [PlyCount "23"] [EventDate "2018"] {Dedicated to the 100th anniversary of the Reti manouevre.} 1. h7 (1. Kxc7 $2 Rxa1 $19) 1... Ne6+ 2. Kc8 $1 (2. Kd7 $2 Rf7+ 3. Kxe6 Rxh7 $19) 2... Rc1+ 3. Kb8 $1 (3. Kd7 $2 Rc7+ 4. Kxe6 Rxh7 $19) (3. Kb7 $2 Rc7+ 4. Kxa6 Rxh7 $19) 3... Rh1 4. h8=Q+ Rxh8 5. Bxh8 Ng7 6. Kc7 a5 7. Kd6 a4 8. Ke5 $1 {Reti manouevre} a3 ({Main:} 8... Kg8 9. Bxg7 $1 (9. Kd4 $2 Kxh8 10. Kc4 Ne6 11. Kb4 Nc5 $19) 9... Kxg7 10. Kd4 a3 11. Kc3 a2 12. Kb2 $11) 9. Kf6 a2 10. Bxg7+ Kg8 11. Kg6 a1=Q 12. Bxa1 $11 1/2-1/2
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[Event "Ceskoslovensky sach 2021 "] [Site ""] [Date "2021.05"] [Round ""] [White "Gurgenidze, David"] [Black "3rd HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "k5N1/2pK4/rP1P4/2N5/8/8/8/6q1 w - - 0 1"] [PlyCount "25"] [EventDate "2021"] 1. b7+ $1 (1. Nxa6 $2 cxd6 $1 2. Nc7+ Kb7 3. Ne7 Qxb6 $1 4. Ne6 Qb4 5. Nd5 Qa3 $19) (1. bxc7 $2 Rxd6+ $1 2. Kxd6 Qxg8 $19) (1. dxc7 $2 Qd4+ 2. Kc6 Rxb6+ $1 3. Kxb6 Qb2+ 4. Kc6 Qg2+ 5. Kd7 Qd5+ $19) 1... Ka7 2. b8=Q+ (2. dxc7 Qg4+ 3. Ke7 Qg7+ $19) (2. Nxa6 $2 Kxb7 3. dxc7 Qg4+ $19) 2... Kxb8 3. dxc7+ (3. Nxa6+ $2 Kb7 $19) 3... Ka7 4. c8=N+ $1 (4. Nxa6 $2 {/c8Q?} Qg4+) 4... Ka8 5. Nxa6 Qg4+ ( 5... Qxg8 {/Nd6} 6. Nc7+ Kb7 7. Nd6+ Kb6 8. Nc8+ $11) 6. Kc7 Qc4+ 7. Kb6 Qb3+ 8. Kc5 Qc2+ 9. Kb6 {A)} Qg6+ (9... Qxc8 {B)} 10. Nc7+ Kb8 11. Na6+ Ka8 12. Nc7+ $11) 10. Kc7 Qxa6 11. Nb6+ Ka7 12. Nc8+ Ka8 13. Nb6+ $11 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site "Chess.com"] [Date "2021.02"] [Round ""] [White "Kiryakov,Peter and Arestov,Pavel"] [Black "4th HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "5r2/4R3/3N4/8/5p2/2N4P/5r2/2B2knK w - - 0 1"] [PlyCount "18"] [EventDate "2021"] [TimeControl "600"] 1. Nce4 $1 ({Try} 1. Nde4 $2 Rh8 2. Nxf2 Nxh3 3. Re1+ Kxf2 4. Re2+ (4. Re8 Rxe8 {-+ no Nxe8}) 4... Kf1 5. Rh2 Nf2#) (1. Bxf4 $2 Rh8 {-+}) (1. Nd1 $2 Rh2+ 2. Kxh2 Nf3+ 3. Kh1 Rg8 $1 {-+ no Nd2+}) 1... Rh2+ $1 (1... Rh8 2. Nxf2 Nxh3 3. Re1+ Kxf2 4. Re8 $1 Rh7 5. Ne4+ Kf1 6. Nd2+ Kf2 7. Ne4+ {=}) 2. Kxh2 Nf3+ 3. Kh1 Rh8 (3... Rg8 4. Nd2+ $1 Nxd2 5. Bxd2 {=}) 4. Nf2 $1 (4. Ng5 $2 Nxg5 5. Bxf4 Rxh3+ 6. Bh2 Nf3 7. Rh7 (7. Re1+ Nxe1 {-+}) 7... Rxh7 {-+ no stalemate}) 4... Kxf2 5. Ne4+ Kf1 6. Ng5 $1 (6. Nf2 Kxf2 {-+}) 6... Nxg5 7. Bxf4 Rxh3+ ( 7... Nxh3 8. Kh2 Nf2+ 9. Bh6 $1 (9. Kg3 Rh3#) 9... Rxh6+ 10. Kg3 Rh3+ 11. Kf4 { =}) 8. Bh2 Nf3 9. Rh7 $1 Rxh7 {Stalemate, there is no White Nd6.} 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.05"] [Round ""] [White "Nosek,Stanislav and Kekely,Lubos"] [Black "comm."] [Result "1/2-1/2"] [SetUp "1"] [FEN "5r2/1P1P1P2/pnB2R2/P1p2pn1/3r4/2K5/P7/1k6 w - - 0 1"] [PlyCount "27"] [EventDate "2021"] 1. Rxf5 (1. axb6 $2 Rh8 2. Bg2 Rh3+ $1 3. Bxh3 Ne4+ 4. Kb3 Rd3+ 5. Kc4 Kc2 6. d8=Q Rxd8 7. Rd6 Rxd6 8. f8=Q Rd4#) 1... Na4+ (1... Nxd7 2. Rxg5 Rxf7 3. Rxc5 $11) 2. Bxa4 Ne4+ $1 3. Kb3 Rb4+ (3... c4+ 4. Ka3 Rd3+ 5. Kb4 Rd4 6. Ka3 $11) 4. Ka3 Rxa4+ $1 (4... Nd2 5. Rxc5 Rxb7 6. Rc8 Ka1 7. Bc6 Nc4+ 8. Ka4 Rb8 9. Rxb8 Rxb8 10. Bb7 $11) 5. Kxa4 Kb2 $1 {s matovou hrozbou} (5... Kxa2 6. Rf3 Rh8 7. Ra3+ Kb2 8. Rb3+ Ka2 9. Ra3+ $11) 6. Rf3 Nc3+ (6... Rh8 7. Rb3+ Kxa2 8. Ra3+ $11) 7. Rxc3 Kxc3 8. d8=Q $1 Rxd8 9. f8=Q $1 Rxf8 10. b8=Q $1 Rxb8 11. a3 $1 Rb4+ $1 {inak je pat} 12. axb4 c4 (12... cxb4 {modelovy pat}) 13. b5 axb5+ 14. Kxb5 1/2-1/2
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[Event "Ceskoslovenski sach "] [Site ""] [Date "2021.05"] [Round ""] [White "Yarmonov, Igor"] [Black "comm."] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/1pp1K3/6r1/1P4P1/3P1P2/7k/8/8 w - - 0 1"] [PlyCount "16"] [EventDate "2021"] 1. f5 $1 (1. b6 $2 Rxb6 $19) (1. Kf7 $2 Rd6 $1 $19) 1... Rxg5 2. b6 $1 cxb6 ( 2... c6 3. f6 Rg4 4. f7 Re4+ 5. Kd7 Rxd4+ 6. Kc7 Rf4 7. Kxb7 c5 8. Kc6 $11) 3. f6 Kg4 (3... b5 4. f7 Rf5 5. f8=Q Rxf8 6. Kxf8 b4 7. d5 b3 8. d6 b2 9. d7 b1=Q 10. d8=Q $11) 4. f7 Rg7 (4... Rf5 5. d5 Re5+ 6. Kd6 Rf5 7. Ke7 Kg5 8. d6 $11) 5. d5 Kf5 $1 (5... Kg5 $2 6. Ke8 $18) 6. Kd6 $1 Rg6+ 7. Ke7 Rg7 (7... Rf6 8. d6 Re6+ 9. Kd7 Rf6 $11) 8. Kd6 (8. d6 $2 Kg6 $1 $19) 8... Rxf7 {stalemate} 1/2-1/2
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[Event "Ceskoslovensky sach 2021 "] [Site ""] [Date "2021.06"] [Round ""] [White "Pasman, Michael"] [Black "comm."] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/2kPb3/6Pp/1R2P3/3r2P1/6p1/8/7K w - - 0 1"] [PlyCount "23"] [EventDate "2021"] 1. g5 $3 (1. Rb3 $2 Rxg4 $19) 1... Bxg5 (1... Rg4 2. gxh6 g2+ 3. Kg1 Bg5 4. Rb3 $11) 2. Rc5+ $1 (2. Kg2 Rxd7 3. Kxg3 Rg7 4. Ra5 Rxg6 $19) (2. g7 $2 Rg4 3. Kg2 Bd8 $19) 2... Kxd7 3. Rd5+ $3 (3. g7 $2 Rg4 4. g8=Q g2+ 5. Kg1 Be3+ $19) 3... Rxd5 4. g7 Rd1+ 5. Kg2 Rd2+ 6. Kxg3 (6. Kh3 g2 7. g8=Q g1=Q $19) 6... Bh4+ $1 7. Kh3 $1 Rd3+ 8. Kxh4 Rd1 9. e6+ $1 Kd6 $1 (9... Ke7 10. g8=N+ $1 Kxe6 11. Nxh6 Rh1+ 12. Kg5 $11) 10. e7 $1 Kxe7 (10... Rh1+ 11. Kg3 Kxe7 12. Kg2 $1 $11) 11. g8=N+ $1 Ke6 12. Nxh6 $11 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.12"] [Round ""] [White "Neistadt, Vladimir"] [Black "comm."] [Result "1/2-1/2"] [SetUp "1"] [FEN "3n4/B1k1p1q1/P1P5/7r/R1P1P3/2N5/7P/7K w - - 0 1"] [PlyCount "19"] [EventDate "2021"] {[#]} 1. Bb8+ $1 Kxb8 (1... Kc8 2. a7 Qxc3 3. a8=Q) 2. a7+ Ka8 3. c7 $1 (3. Nd5 $2 Rxd5 $1 4. exd5 Qf6 5. h4 (5. c7 $4 Qf1#) 5... Nxc6) 3... Rxh2+ 4. Kxh2 Qe5+ 5. Kg2 $1 (5. Kh1 $2 Qxc7 $19 6. Nd5 Qc6 (6... Qd6 7. c5 Qxc5 8. Rc4 Qf2) 7. Ra6 Qxa6 8. Nc7+ Kxa7 9. Nxa6 Kxa6 $19) 5... Qxc7 6. Nd5 Qc6 {/d6} 7. c5 $1 Qxc5 (7... Qxa4 8. Nb6+ Kxa7 9. Nxa4 $11) 8. Rc4 $1 Qa5 9. Ra4 $1 Qc5 10. Rc4 { pos. draw} 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.11"] [Round ""] [White "Polasek , Jaroslav"] [Black "spec.prize, venovano M. Vankovi"] [Result "1-0"] [Annotator "Jara"] [SetUp "1"] [FEN "8/p2K4/7P/5k2/2P4r/7P/8/6R1 b - - 0 1"] [PlyCount "46"] [EventDate "2021"] 1... Rd4+ (1... Rxh6 {to je zcela beznadějné, např.} 2. c5 Rh7+ 3. Kc8 Rh8+ 4. Kb7 Rh7+ 5. Kb8 Rh6 6. Rc1 Rc6 7. Kb7) (1... Rxc4 2. Rg4 $1 Rc3 3. Rh4) 2. Ke8 $1 (2. Ke7 Rxc4 3. Kf7 Rc7+ 4. Kg8 Kf6 $1 $11) 2... Rxc4 3. h7 $1 Rc7 $1 ({ Po} 3... Rc8+ 4. Kf7 {se bílý král před šachy věže ukryje na h5} Rc7+) 4. Rg7 $1 (4. h8=Q Rc8+) 4... Rc8+ 5. Ke7 $1 (5. Kd7 $2 Rb8 $1 $11 {s opakováním pozice} (5... Rh8) 6. Kc6 Rh8 (6... Rb6+ {take staci} 7. Kd7 Rb8 $1 {s opakováním pozice}) 7. h4 Kf6 $11) (5. Kf7 {jen ztrácí čas} Rc7+ 6. Kf8 Rc8+ 7. Ke7) 5... Rb8 $1 (5... Rc7+ $2 6. Kd6 (6. Kd8) 6... Rc8 7. Rg8) ( 5... a5 6. h4 {hrozí Vg5+} a4 7. Rg5+ Kf4 8. Rh5 (8. Kf7 a3 9. Rg8) 8... Rh8 9. Kf7 Kg4 10. Kg7) (5... Rh8 6. Kf7 a5 7. h4 a4 8. Rg5+) 6. h4 $1 {Hrozí Vg5+ s odehnáním černého krále} Rb7+ {Černý musí krále odehnat} ({Po} 6... a5 7. Rg5+ Kf4 {je nejjednodušší} 8. Rh5 ({stačí i} 8. Rxa5 Rb7+ 9. Kf6 Rxh7 10. h5)) 7. Kd6 (7. Kd8 $6 {vede jen k opakování pozice} Rb8+ 8. Ke7 $1 ({po} 8. Kc7 $2 {by se bílý král příliš vzdálil a nezabránil by vniku černého krále na pole f6} Rh8) 8... Rb7+) 7... Rb6+ (7... Rb8 8. Rg8) 8. Kd7 $1 (8. Kc7 $2 Rh6 $11 9. Kd7 Kf6) 8... Rb8 (8... Rh6 9. Ke7) 9. h5 $1 ( 9. Kc6 {vede k opakování tahů} Rb6+ 10. Kd7 $1 Rb8 11. h5) (9. Kc7 $2 Rh8 10. h5 Kf6 (10... a5 11. h6 a4 12. Kd6 a3) 11. h6 a5 $11 {a bílý pěšce a5 nezíská}) 9... Kf6 (9... a5 10. Kc6 Rh8 11. Kb5 Kf6 12. h6) 10. h6 a5 11. Kc6 {hrozí Vg8. Tím získal bílý tempo k chycení čPa5} (11. Kd6) 11... Rh8 12. Kb5 {Bílý sebere pěšce a, králem doběhne na královské křídlo a vytlačí černého Ale úplně jednoduché to není. Musí obejít králem zespodu. Nestačí doběhnout králem na e7, odamtut by ho černý vyhnal Např.} Ke5 13. Kxa5 Ke4 14. Kb6 Kd5 15. Kb5 {zde je pěkně vidět systém vytlačování} (15. Kc7 Ke5 16. Kd7 Kf5 17. Ke7 Ra8 18. Kf7 Rh8 19. Ke7 { 48 DTZ - musí obíhat znovu [#]} Ra8 20. Kd7 Ra7+ 21. Kc8 $1 (21. Kc6 { ztrata času} Ra6+ 22. Kd7) 21... Ra8+ 22. Kb7 Rh8 23. Kc6 Ke6 (23... Rc8+ 24. Kd6 Rd8+ (24... Rh8 25. Kd5 Rd8+ 26. Kc4 Rh8 27. Kd3 Kf4 28. Ke2) 25. Kc5 Rh8 26. Kd5 Rd8+ 27. Kc4) 24. Kc5 (24. Kb5 Kd5 25. Kb4 Kd4 26. Rd7+ Ke4 27. Rf7 Kd4 28. Rg7 Rb8+ 29. Ka3 Rh8 30. Kb2 Kd3 31. Kc1 Ke2 32. Kc2 {přes tuhle pozici se asi musí přejít}) 24... Ke5 25. Kc4 Ke4 26. Kc3 Ke3 27. Rf7 Rc8+ 28. Kb2 {to je nejrychlejší} Kd2 29. Rd7+ Ke3 30. Rg7 Rh8 31. Kc1 Ke2 32. Kc2 Ke3 33. Kd1 Kf2 34. Kd2 Kf3 35. Ke1) 15... Kd4 (15... Rb8+ 16. Ka4 Rh8 17. Kb3 Kd4 18. Kc2 Ke3 19. Kd1 Kf2 20. Kd2 Kf3 21. Ke1) 16. Kc6 Ke5 17. Kc5 $1 Ke4 18. Kd6 Kf5 19. Kd5 Rd8+ 20. Kc4 Rh8 21. Kd3 Kf4 22. Ke2 Ke4 23. Kf2 Kf4 24. Kg2 1-0
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[Event "Ceskoslovensky sach 2021 "] [Site ""] [Date "2021.05"] [Round ""] [White "Krug, Peter"] [Black "spec. HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "4nB2/2b1P1NP/4n3/5p2/6k1/1P1pp1p1/4r3/1NK4R w - - 0 1"] [PlyCount "26"] [EventDate "2021"] [TimeControl "300"] 1. Nc3 Re1+ (1... g2 2. h8=Q gxh1=Q+ 3. Qxh1 Re1+ 4. Qxe1 d2+ 5. Qxd2 exd2+ 6. Kxd2 N6xg7 7. Bxg7 Nxg7 8. Nd5 Bd6 9. b4 f4 10. Ke2 Kg3 11. Kf1 f3 12. b5 f2 13. Nf6 Bxe7 14. Ne4+ $11) 2. Rxe1 d2+ 3. Kd1 dxe1=Q+ 4. Kxe1 Ba5 5. b4 {!} (5. h8=Q $2 Bxc3+ 6. Ke2 Nf4+ 7. Kxe3 Nc7 $1 $19 8. Qh4+ Kxh4 9. Nxf5+ Kg4 10. Ke4 Ng6 $19) 5... Bxb4 6. h8=Q Bxc3+ 7. Ke2 Nf4+ 8. Kxe3 Nc7 9. Qh4+ $1 Kxh4 10. Nxf5+ Kg4 11. Nxg3 Kxg3 12. e8=N {!!} (12. e8=Q {?} Ncd5+ {!} 13. Ke4 Nf6+ 14. Ke3 N4d5+ 15. Kd3 Nxe8 16. Kc4 Nef6 $19) 12... Nxe8 (12... Nfd5+ 13. Ke4 Nxe8 14. Kxd5 $11) 13. Bd6 $1 Nxd6 {stalemate} 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.11"] [Round ""] [White "Vlasak, Emil"] [Black "spec. comm., venovano M. Vankovi"] [Result "1/2-1/2"] [SetUp "1"] [FEN "7N/8/4B3/2N2K2/8/2p2pkp/2P5/3b4 w - - 0 1"] [PlyCount "17"] [EventDate "2019"] 1. Ne4+ Kg2 2. Ng6 Bxc2 (2... h2 3. Nf4+ Kg1 4. Nh3+) 3. Nh4+ (3. Nf4+ $2 Kh2 4. Bc4 Bxe4+ 5. Kxe4 c2 6. Kxf3 c1=Q) 3... Kh1 $1 (3... Kf1 4. Nxf3 (4. Bc4+ Ke1 5. Nxf3+) 4... Bxe4+ 5. Kxe4 c2 6. Bxh3+ Kf2 7. Ne5) 4. Nxf3 (4. Bd5 $2 f2 5. Kg4 Bd1+ $1 (5... f1=Q $2 6. Ng5+ $1 Kg1 7. Nxh3+ Kh2 (7... Qxh3+ 8. Kxh3 Bf5+ $2 9. Nxf5 c2 10. Nd4) 8. Nf3+ Qxf3+ 9. Kxf3 Bd1+ 10. Ke3 c2 11. Kd2) 6. Kg5 Kg1) 4... Bxe4+ (4... h2 5. Bb3) 5. Kxe4 c2 6. Bg4 $1 (6. Bxh3 $2 c1=Q {VZ} ) 6... c1=Q (6... h2 7. Nd4 c1=Q $2 (7... Kg1 8. Bf3) 8. Bf3+ Kg1 9. Ne2+ { a bílý dokonce vyhraje}) 7. Bxh3 Qh6 8. Bf1 Qc1 9. Bh3 1/2-1/2
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[Event "Ceskoslovensky sach 2021"] [Site ""] [Date "2021.11"] [Round ""] [White "Tarasiuk, Vladislav"] [Black "spec. comm."] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/1Np3Kp/p1P5/P2P4/1k6/8/1p6/8 w - - 0 1"] [PlyCount "25"] [EventDate "2021"] {Dedicated to the 100th anniversary of the study by R. Reti (1921)} 1. d6 b1=Q (1... cxd6 2. c7 b1=Q 3. c8=Q $11) 2. d7 $1 (2. dxc7 $2 {e.g.} Qg6+ 3. Kf8 Qxc6 $19) 2... Qg6+ 3. Kh8 $1 (3. Kf8 $2 Qf6+ $1 4. Kg8 h5 $19) 3... Qd3 $1 (3... Qxc6 4. d8=Q Qxb7 5. Qd2+ Ka3 6. Qc3+ Qb3 7. Qxc7 $11) 4. d8=Q (4. Kg7 $2 h5 $19) 4... Qxd8+ 5. Nxd8 h5 6. Ne6 $1 (6. Kg7 $2 Kxa5 7. Ne6 Kb6 $19) 6... Kxa5 7. Nxc7 Kb6 8. Nxa6 $1 (8. Nd5+ $2 Kxc6 9. Nf4 h4 10. Kg7 a5 $19) 8... Kxa6 { Initial position of Reti's study.} 9. Kg7 $1 h4 10. Kf6 Kb6 11. Ke5 h3 12. Kd6 h2 13. c7 {draw.} 1/2-1/2
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