www.arves.org - UAPA 22th 2023

Studies Provisionaly awarded for the

22th INTERNATIONAL INTERNET TOURNAMENT (UAPA) – 2023

Section A : Thematic: Logic study with false try in a preliminary plan

[Event "1.p. UAPA 22th Ty Sec.A (tt)"] [Site ""] [Date "2023"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "6Nn/8/2p5/3P1k2/P7/6P1/7n/4K3 w - - 0 1"] [PlyCount "21"] [EventDate "2023"] 
 {Thematic: Logic study with false try in a preliminary plan Main plan of white :advancing and promoting a-pawn} 1. Ke2 $1 ({Prematurely} 1. a5 $2 Nf3+ 2. Ke2 Nd4+ $11) (1. Ne7+ $2 {/h6} Ke5 2. a5 Nf3+ 3. Kf2 Nd4 $11) ({ Thematic logical try} 1. dxc6 $2 Ke6 $11) 1... Nf7 $1 (1... Ng6 2. a5 $18) ( 1... Ng4 2. a5 $18) 2. Nh6+ $1 ({Prematurely} 2. a5 $2 Nd6 $1 3. a6 Nb5 $11) ({ Thematic logical try} 2. dxc6 $2 Ke6 $11) 2... Nxh6 3. a5 Nf1 $1 { Again - main plan of white :advancing and promoting a-pawn} (3... Nf7 4. a6 $18 ) 4. g4+ $3 (4. Kxf1 $2 Ng4 5. Ke2 (5. a6 Ne3+ 6. Ke2 Nxd5) 5... Nf6 $1 6. g4+ Ke5 $1 7. a6 Nxd5 8. a7 Nb6 $1 $11) ({Thematic logical try :} 4. dxc6 $2 Nxg3+ 5. Ke1 Ng8 $1 6. a6 Ne7 7. a7 Nxc6 8. a8=Q Ne5 $11 { Position X1 Theoretical draw}) ({Prematurely} 4. a6 $2 {because black will save his both knights , capturing second white pawn with theoretical draw (or stop a-pawn)} Nxg3+ 5. Kf3 ({or} 5. Ke1 cxd5 6. a7 { is theoretical draw with 2 defended knights vs queen}) 5... Ne4 6. dxc6 Ng5+ 7. Ke2 Ne6 8. a7 Nc7 $11 {stopping the pawn}) 4... Nxg4 (4... Ke5 5. a6 Ng3+ 6. Kf3 Ne4 7. a7 $18) (4... Kxg4 5. Kxf1 $1 $18) 5. dxc6 Ng3+ 6. Ke1 $1 { Switchback} Ke6 7. a6 Ne5 8. a7 Nxc6 9. a8=Q Ne5 { Position X2 - black king on e6} ({ With other moves one of the knights will also be trapped :} 9... Kd7 10. Qb7+ Kd6 11. Qh7 Ne5 12. Kf2 $18) (9... Kd6 10. Qa3+ $18) (9... Kd5 10. Qg8+ $18) 10. Qg8+ Kf6 11. Qxg3 $18 {winning} 1-0

[Event "2.p. UAPA 22th Ty Sec.A (tt)"] [Site ""] [Date "2023"] [Round ""] [White "Oleg Pervakov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "K2N1R2/b1k2p2/2n4P/6P1/2p5/8/bP6/8 b - - 0 1"] [PlyCount "21"] [EventDate "2023"] 
 {Thematic: Logic study with false try in a preliminary plan} {#} 1... c3 $1 ( 1... Nxd8 2. Kxa7 c3 3. bxc3 Nc6+ 4. Ka8 $1 $11) 2. h7 (2. bxc3 $2 Bc5 $1 3. Nxc6 Bxf8 4. Nb4 Bc4 $19) (2. Nxc6 $2 cxb2 3. h7 b1=Q 4. Rc8+ Kxc8 5. h8=Q+ Kc7 6. Qd8+ Kxc6 $19) 2... Bd4 (2... cxb2 3. h8=Q b1=Q 4. Qh2+ $1 $11) 3. bxc3 (3. Nxc6 $2 Bd5 $1 4. Rxf7+ Kxc6 $1 5. bxc3 Kb6+ 6. Kb8 Be5+ 7. Kc8 Bxf7 $19) 3... Bd5 $1 4. Ne6+ $3 ({Prematurely} 4. Rxf7+ $2 Ne7+ $1 5. Nc6 Bxc6#) ({ Logical try} 4. cxd4 $2 Nxd8+ 5. Ka7 Nc6+ 6. Ka8 Nxd4+ 7. Ka7 Nc6+ 8. Ka8 Ne5+ $1 9. Ka7 Bb7 10. Rxf7+ Nxf7 11. h8=Q Nxh8 12. g6 Bd5 $1 13. g7 Ng6 $19) 4... fxe6 (4... Kb6 5. Nf4 $1 Be4 6. cxd4 Nxd4+ 7. Kb8 Nc6+ 8. Ka8 $11) 5. cxd4 Nxd4+ 6. Ka7 Nc6+ 7. Ka8 (7. Ka6 $4 Bc4#) 7... Ne5+ $1 8. Ka7 Bb7 $1 9. Rf7+ $1 (9. h8=Q $4 Nc6#) 9... Nxf7 10. h8=Q $1 Nxh8 11. g6 Nxg6 {Stalemate} 1/2-1/2

[Event "3.p. UAPA 22th Ty Sec.A (tt)"] [Site ""] [Date "2023.12"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/3k1P2/1K6/pp2b3/8/2P4R/8/5r2 w - - 0 1"] [PlyCount "23"] [EventDate "2023"] 
 {Thematic: Logic study with false try in a preliminary plan White has to eliminate black pawns for a draw} 1. Rh7 $1 ({Thematic logical try :} 1. Rh1 $2 Rxf7 2. Rd1+ Bd6 $19) ({Prematurely} 1. Kxa5 $2 Kc6 $19) ({Prematurely} 1. Kxb5 $2 Bc7 $19) 1... Kd6 $1 (1... Ke7 2. Kxa5 Rb1 3. Rh3 Kxf7 4. Kb6 Rb3 5. Rh5 $11 ) (1... Bc7+ 2. Kb7 Ke6 3. Rh6+ Kxf7 4. Kxc7 $11) 2. Rh1 $1 { The black king should be kept away from protecting pawns} ({ Thematic logical try :} 2. Rh6+ $2 Kd5 3. Kxa5 (3. Kxb5 Bxc3 $19) 3... Kc5 $19) ({Prematurely} 2. Kxa5 $2 Kc5 {/c6 -+}) ({Prematurely} 2. Kxb5 $2 Bxc3 $19) 2... Rf5 $1 (2... Rxf7 3. Rd1+ Ke6 4. Kxa5 $1 Rb7 5. Ka6 Rb8 6. Rb1 $11) (2... Rf4 3. Rd1+ $11) 3. Rh5 $1 (3. Rd1+ $2 Ke7 4. Kxa5 Bxc3+ $19) 3... Rf4 $1 (3... Rxf7 4. Kxa5 $1 {black king can't defend pawns because e5 is under attak} Rb7 5. Ka6 $11) 4. f8=Q+ $1 ({Prematurely} 4. Kxa5 $2 Kc6 $1 5. Rxe5 Ra4#) (4. Kxb5 $2 Bxc3 $19) 4... Rxf8 5. Kxa5 $1 {Only now} Rb8 { Black succeeded to defend his second pawn, but his pieces are badly placed} 6. Kb4 $1 Ke6 7. Rg5 $1 (7. Rh6+ $2 Kd7 8. c4 Bd6+ $1 $19) 7... Bd6+ 8. Ka5 Bc7+ 9. Kb4 $1 Be5 10. Rh5 $1 (10. Rg6+ $2 Kd7 11. Rg5 Bd6+ $19) 10... Bd6+ 11. Ka5 Be5 12. Kb4 $11 {Positional draw} 1/2-1/2

[Event "hm. UAPA 22th Ty Sec.A (tt)"] [Site ""] [Date "2023"] [Round ""] [White "Mario.Garcia & Vasily, Murashov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "1b2R3/1P3P1K/p2k4/2p3Pn/8/6p1/1P6/5r2 w - - 0 1"] [PlyCount "23"] [EventDate "2023"] 
 {Thematic: Logic study with false try in a preliminary plan} 1. f8=Q+ $1 (1. g6 $2 Kc7 $19 {similar to solution}) 1... Rxf8 2. Rxf8 Kc7 3. Rf7+ $1 ({ Prematurely} 3. g6 $2 Kxb7 {(ab)} 4. Rf5 g2 {(ba)} 5. g7 g1=Q 6. g8=Q Qxg8+ 7. Kxg8 Nf4 8. Rxc5 Kb6 9. Rc3 Bd6 10. Rb3+ (10. Kf7 a5 11. Rc4 Kb5 $19) 10... Kc5 11. Ra3 Kb5 12. Rb3+ Bb4 13. Rf3 Ne6 $1 $19) ({Logical try:} 3. Rf1 $2 Kxb7 $1 (3... c4 $2 4. g6 $1 (4. Kh6 $2 Ba7 5. Rc1 g2 6. Rxc4+ Kxb7 7. Rg4 g1=Q 8. Rxg1 Bxg1 $19) 4... Ba7 5. g7 Nxg7 6. Rf7+ Kb8 7. Rxg7 $1 (7. Rf8+ $2 Kxb7 8. Rf7+ Kb6 9. Rxg7 Bb8 10. Rg6+ Kb5 11. Rg8 Bc7 12. Kg6 a5 13. Kf5 a4 14. Ke4 c3 15. Kd3 cxb2 16. Kc2 a3 $19) 7... Bf2 8. Kg8 a5 9. Kf7 Kxb7 10. Ke6+ Kc6 11. Rg4 Kc5 12. Ke5 a4 13. Ke4 $11) 4. Re1 c4 5. g6 Bf4 6. Re2 a5 $19) 3... Kc6 4. Re7 $1 (4. Rf1 $2 Kxb7 5. Kh6 (5. Re1 c4 $19 {similar to logical try}) (5. g6 Be5 $19) 5... Nf4 6. g6 Be5 7. Rg1 (7. g7 Bxg7+ 8. Kxg7 Ne2 {/h3-+}) 7... Ne2 8. Rg2 Nd4 $1 9. g7 Nf5+ $19) 4... g2 5. Re1 Kxb7 (5... Bh2 6. Rg1 $1 $11) 6. Rg1 Nf4 7. g6 Be5 8. g7 Nh5 9. g8=Q {/R} (9. g8=N $2 Nf4 $1 10. Ne7 Bd4 $19) 9... Nf6+ 10. Kg7 Nxg8+ 11. Kxg8 Bxb2 12. Rxg2 $1 {positional draw} (12. Kf7 $2 c4 13. Rxg2 c3 14. Ke6 Kc6 $1 15. Ke5 c2+ $19) 1/2-1/2

[Event "sp.hm. UAPA 22th Ty Sec.A (tt)"] [Site ""] [Date "2023"] [Round ""] [White "Pavel Arestov & Peter Krug"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "6N1/3k4/8/6P1/6P1/1n6/8/7K w - - 0 1"] [PlyCount "29"] [EventDate "2023"] 
 {Thematic: Logic study with false try in a preliminary plan} 1. g6 $1 (1. Kg2 $2 Ke8 2. Nh6 Nd4 3. g6 Ne6 4. Kf3 Ke7 $11) 1... Ke8 2. Nh6 $1 ({Prematurely}  2. g7 $2 Kf7 3. Nf6 Kxg7 $11) ({Logiical try:} 2. Nf6+ $2 Kf8 3. Nh5 Nd4 {/a5} 4. Kg2 Nc6 $1 5. Kg3 Ne7 6. Nf4 Kg7 $11) 2... Kf8 3. Nf5 Nc1 $1 4. Kg2 $1 (4. Kh2 $2 Ne2 5. g7+ Kg8 6. Kh3 Nf4+ 7. Kh4 Ne6 8. Kh5 Kh7 $11) 4... Nd3 5. Kg3 Ne5 6. g7+ Kg8 7. Kf4 Nd7 (7... Ng6+ 8. Kg5 Ne5 9. Kh5 $1 $18) 8. Kg5 $1 ({Try: } 8. g5 $2 Nc5 9. Ke5 Kf7 10. Kd5 Na6 $3 11. g6+ Kg8 12. Kd6 Nb4 13. Ke5 Nd5 $1 14. Kxd5 $11 {stalemate}) 8... Kh7 9. Kh5 $1 Nf6+ 10. Kh4 Nd7 (10... Ne8 11. Kg5 Nxg7 12. Kf6 $1 Ne8+ 13. Kf7 Nc7 14. g5 Ne6 $1 15. g6+ $1 Kh8 16. Kxe6 $18) 11. g5 Ne5 12. Kh5 $1 {zz} Kg8 (12... Ng6 13. g8=Q+ $1 $18) 13. g6 $1 ({Try:}  13. Kh6 Ng6 $1 14. Kh5 Nf4+ 15. Kh6 Ng6 16. Kxg6 $11 {stalemate}) 13... Nxg6 ( 13... Ng4 14. Ne7+ $18) 14. Kh6 $1 {zz} (14. Kxg6 $2 {stalemate}) 14... Nf8 15. Ne7+ $18 1-0

"STUDIES WIN"

SECTION THEME FREE: B.1.

[Event "1/2 p. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023.09.03"] [Round ""] [White "Oleg Pervakov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "5B2/1N3Pp1/8/1r6/k4Kp1/1p6/8/8 w - - 0 1"] [PlyCount "41"] [EventDate "2023"] 
 {[#]} 1. Ba3 $1 ({Logical try} 1. Bxg7 $2 b2 2. Bxb2 Rxb2 3. Kg3 Rb3+ 4. Kxg4 Rb4+ 5. Kg3 Rb3+ 6. Kf2 Rb2+ 7. Ke3 Rb3+ 8. Ke4 Rb4+ 9. Ke5 Rb5+ 10. Ke6 Rb6+ 11. Nd6 Rb8 12. Ne8 Rb6+ 13. Ke5 Rb5+ 14. Ke4 Rb4+ 15. Ke3 Rb3+ 16. Kf2 Rb2+ 17. Kg3 Rb3+ 18. Kg4 Rb4+ 19. Kg5 Rb5+ 20. Kg6 Rb6+ 21. Nf6 (21. Kg7 Rb7 $11) 21... Rb8 22. Ne8 Rb6+ $11 {Positional draw}) (1. Nc5+ $2 Rxc5 2. Bxc5 b2 3. f8=Q b1=Q 4. Qa8+ Kb3 $11) 1... b2 (1... Kxa3 2. f8=Q+ Rb4+ 3. Ke5 b2 4. Nd6 $1 b1=Q 5. Nc4+ Ka4 6. Qa8+ $18) (1... g6 2. f8=Q Rf5+ 3. Qxf5 gxf5 4. Bb2 $18) 2. Bxb2 Rxb2 3. Kg3 $1 Rb3+ 4. Kxg4 Rb4+ 5. Kg3 $1 (5. Kf3 $2 g5 $1 $11) ({ Logical try} 5. Kg5 Rb5+ 6. Kg6 $2 Rb6+ 7. Kh7 (7. Kxg7 Rxb7 $11) 7... Rf6 $1 $11) 5... Rb3+ 6. Kf2 Rb2+ $1 (6... Rb6 7. Nc5+ $1 Ka5 8. Nd7 $18) 7. Ke3 Rb3+ 8. Ke4 Rb4+ 9. Ke5 Rb5+ 10. Ke6 Rb6+ 11. Nd6 $1 Rb8 12. Ne8 Rb6+ 13. Ke5 {(d5)} Rb5+ 14. Ke4 Rb4+ 15. Ke3 $1 (15. Kf3 $2 g5 $1 $11) 15... Rb3+ 16. Kf2 Rb2+ 17. Kg3 Rb3+ 18. Kg4 Rb4+ 19. Kg5 Rb5+ 20. Kg6 Rb6+ 21. Kh7 $1 { New ideas in Troitzky's mechanism (Bohemia, 1911 and Bohemia, 1912)} 1-0

[Event "1/2 p. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023.02.20"] [Round ""] [White "JanTimman. Steffen. Nielsen, Mario Garcia"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/k1p5/2P5/8/1Pp5/1p6/1n4K1/3R3B w - - 0 1"] [PlyCount "27"] [EventDate "2020"] 
 1. Rg1 $1 ({Try :} 1. Ra1+ $2 Kb6 2. Kf2 c3 {(ab)} (2... Nd3+ 3. Ke3 Nxb4 4. Be4 Kc5 5. Ra5+ Kb6 6. Ra8 Kc5) 3. Ke2 Kb5 {(ba)} 4. Bd5 (4. Rg1 Kxb4 5. Bd5 Na4 $11) 4... Kxb4 5. Rh1 Na4 $1 6. Bg8 (6. Rh4+ Ka3 7. Bg8 c2 8. Kd2 Nc3 $1 $11) 6... c2 7. Kd2 Nc3 $1 8. Bh7 (8. Rh4+ Ka3 $11) 8... Na2 $1 $11) ({or} 1. Rf1 $2 c3 $1 (1... Nd3 $2 2. Kf3 $1 {see solution}) 2. Kf2 c2 $1 3. Ke3 Nd1+ 4. Kd2 b2 5. Kxc2 Ne3+ $11) 1... Nd3 ({Main:} 1... Nd1 $1 2. Rxd1 c3 3. Kf2 $1 { according to the study of S. Nielsen in ChessStar 2019 (g2-b6)} c2 (3... b2 4. Be4 $18) 4. Ra1+ Kb6 (4... Kb8 5. Be4 b2 6. Ra8+ $1 Kxa8 7. Bxc2 $18) 5. Be4 b2 6. Ra7 $1 ({a ensay in this line :} 6. Ra6+ $2 Kxa6 7. Bxc2 Kb5 8. Ke3 Kxc6 9. Kd4 Kb5 10. Kc3 c5 11. Bd3+ Kb6 12. b5 b1=Q 13. Bxb1 Kxb5 $11) 6... Kxa7 (6... b1=Q 7. Rb7+ Ka6 8. Bd3#) ({or} 6... c1=Q 7. Rb7+ Ka6 8. Bd3+ Qc4 9. Bxc4#) 7. Bxc2 Kb6 8. Be4 b1=Q 9. Bxb1 Kxc6 10. Bd3 $1 $18) 2. Kf3 $1 Nxb4 3. Ke3 {/e4} c3 4. Kd4 $1 Na2 (4... c2 5. Kc3 Na2+ 6. Kb2 $18) 5. Bd5 $1 c2 (5... b2 6. Be4 $18) 6. Bxb3 c1=Q 7. Rxc1 Nxc1 8. Bc4 $1 {domination !} Kb6 (8... Kb8 9. Ke5 Ka7 10. Ke6 Kb6 11. Kd7 $18) 9. Kd5 $1 Ka5 (9... Ka7 10. Ke6 Kb6 11. Kd7 Kc5 12. Kxc7 $18) 10. Ke6 $1 (10. Kc5 $2 Ka4 $11) 10... Kb4 11. Kd7 $1 Kxc4 12. Kxc7 {with : a)} Nb3 ({b)} 12... Nd3 13. Kd6 $1 (13. Kb7 $2 Nc5+ $11) 13... Nc5 14. c7 $18) 13. Kb6 $1 $18 (13. Kd6 $2 Nd4 14. c7 Nb5+ $1 $11) (13. Kd7 Nc5+ $1 $11) 13... Nc5 14. c7 $18 {In two sub-lines ZZ} 1-0

[Event "3.p. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023.09.27"] [Round ""] [White "Oleg Pervakov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "2b5/P7/8/8/1P6/1k6/1p1KB3/8 w - - 0 1"] [PlyCount "27"] [EventDate "2023"] 
 {#} 1. Bd1+ $1 ({Thematic try} 1. a8=Q $2 b1=Q 2. Qd5+ (2. Qxc8 Qb2+ $1 $11) 2... Ka3 $1 3. Qa5+ Kb3 $1 (3... Kb2 $2 4. Qe5+ Ka3 5. Qc3+ Qb3 6. b5 $1 $18) 4. Bd1+ Kb2 5. Qe5+ Ka2 $1 6. Qd5+ Ka3 $1 7. Qa8+ Kxb4 $1 8. Qb8+ Bb7 $1 9. Qxb7+ Ka3 10. Qxb1 $11 {Stalemate}) 1... Kxb4 (1... Kc4 2. a8=Q b1=Q 3. Qc6+ Kxb4 (3... Kd4 4. Qd6+) 4. Qb6+ $18) 2. a8=R $1 (2. a8=Q $2 b1=Q 3. Qb8+ Bb7 $1 4. Qxb7+ Ka3 5. Qxb1 $11) 2... b1=N+ $1 3. Kc1 Bf5 4. Rf8 Bd3 5. Rf3 $1 (5. Rf4+ $2 Kc3 $11) (5. Rd8 $2 Kc3 $11) 5... Bg6 $1 (5... Be4 6. Rf4 Nc3 7. Kd2 $1 Kc4 (7... Nb1+ 8. Ke1 $18) 8. Bc2 Kd4 9. Rh4 $18) (5... Bh7 6. Rh3 $1 Bf5 7. Rh5 Bd3 8. Rh4+ Kc3 9. Rh3 Kd4 10. Bc2 $18) (5... Kc4 6. Bc2 $18) 6. Rg3 $1 (6. Rf4+ Kc3 7. Rf2 $2 Kd4 $1 8. Kb2 Be4 9. Bc2 Ke3 $11) 6... Bf5 7. Rg5 Bh7 $1 ( 7... Bd3 8. Rg4+ $1 Kc3 9. Rg3 $18) 8. Rh5 $1 (8. Rg4+ $2 Kc3 $1 9. Rg3+ (9. Rg2 Be4 10. Rg3+ Kd4 $1 11. Bc2 Nc3 $11) 9... Kd4 $1 10. Bc2 Nc3 $1 11. Rg4+ Ne4 $11) 8... Bg6 (8... Bd3 9. Rh4+ $1 Kc3 10. Rh3 $18) 9. Rh4+ $1 { The key check} Kc5 $1 (9... Kc3 10. Rh2 $1 Kd4 (10... Na3 11. Rh3+ Kb4 12. Rb3+ $18) 11. Kb2 $1 Nc3 (11... Be4 12. Bc2 $18) 12. Rd2+ Kc4 13. Bb3+ $18) 10. Bh5 $1 Bf5 $1 (10... Bd3 11. Kb2 $1 Nd2 12. Kc3 $18) 11. Bf7 $1 (11. Kb2 $2 Nd2 $11 ) 11... Kd6 (11... Bd3 12. Kb2 $1 $18) 12. Rh5 $1 Be4 13. Rh3 $1 Ke5 14. Ba2 $18 1-0

[Event "sp. p. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023"] [Round ""] [White "Pavel Arestov & Michal Hlinka"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "4N3/N5p1/7b/8/3k4/8/1P6/3K4 w - - 0 1"] [PlyCount "23"] [EventDate "2022"] 
 {[#]} 1. Nc6+ (1. Kc2 $2 Kc5 $1 2. Nc8 Kc6 3. Ncd6 Kd7 $11) 1... Kd5 (1... Kc4 2. Kc2 $18) 2. Nd8 (2. Nb4+ $2 Kc4 3. Nc6 Kb3 $1 $11) (2. Ne7+ $2 Ke6 3. Nc6 Kd7 $11) 2... Bf4 $1 (2... Bg5 3. Nf7 Be7 4. Nc7+ $1 (4. Nxg7 $2 Bf6 $11) 4... Ke4 5. Ke2 g5 6. Nh6 Kd4 (6... Bf6 7. b3 $1 Kd4 8. Kd2 Be5 9. Na6 Bf4+ 10. Kc2 $18) 7. Kd2 Kc4 8. Kc2 $18) (2... Be3 3. b3 $1 g5 4. Nf6+ Ke5 5. Ng4+ Kd4 6. Kc2 $1 $18) 3. b3 $3 (3. Nxg7 $2 Be5 $11) 3... g5 4. Nf6+ (4. Kc2 $2 Be5 $1 5. Nf7 g4 6. Nxe5 Kxe5 7. Kd3 g3 8. Ke3 g2 $11) 4... Kd4 $1 (4... Ke5 5. Nh5 $1 ( 5. Ng4+ $2 Ke4 6. Ke2 Kd4 $1 $11) 5... Bh2 6. Nf7+ Kf5 7. Nh6+ Kg6 8. Nf6 $18 { or} (8. Ng4 Bc7 9. Nhf6 $18)) 5. Kc2 Ke5 6. Nh5 $1 (6. Ng4+ $2 Kf5 7. Nh6+ Kg6 8. Ng4 Kf5 9. Nf2 g4 10. Nc6 Bg3 $1 11. Nd1 Ke4 12. Kd2 Bd6 $1 13. Nc3+ Kf4 14. Ke2 g3 $11) 6... Bh2 7. Nf7+ (7. Kd3 $2 g4 8. Nf7+ Kf5 9. Nh6+ Kg5 $1 10. Nf6 $1 g3 $1 $11) 7... Kf5 8. Nh6+ $1 Kg6 9. Nf6 $1 (9. Ng4 $2 Bb8 {Bd6} 10. Nhf6 Kf5 $1 $11 11. Kd3 Ba7 $1 12. b4 Bg1 13. b5 Ba7 14. Kc4 Bg1 15. Kd5 Ba7 $11) 9... Bg1 (9... Kxf6 10. Ng4+ $18) 10. Nfg4 $1 $18 {for example try} (10. Nhg4 $2 Kf5 $1 11. Kd3 Ba7 $1 12. b4 Bg1 $1 13. Kc4 Ba7 $1 14. Kd5 Bg1 15. b5 Ba7 $11) 10... Kh5 11. Kd3 Bc5 12. Ke4 $18 1-0

[Event "sp. p. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023.09.14"] [Round ""] [White "Oleg Pervakov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/8/1p2p3/3P4/5P1K/8/P3b3/1k6 w - - 0 1"] [PlyCount "37"] [EventDate "2023"] 
 {[#]} 1. d6 $1 (1. dxe6 $2 Kxa2 2. f5 Bc4 $1 3. Kg5 b5 4. e7 Bf7 5. Kf6 Be8 6. Ke6 b4 7. f6 b3 8. f7 Bxf7+ 9. Kxf7 b2 10. e8=Q b1=Q $11) 1... Bb5 2. a3 $3 (2. Kg5 $2 Kxa2 3. Kf6 Bc6 4. Kxe6 b5 5. f5 b4 6. f6 b3 7. f7 b2 8. f8=Q b1=Q $11) 2... Kb2 3. Kg5 Kxa3 4. Kf6 Bd7 $1 (4... Bc6 5. Kxe6 b5 6. f5 b4 7. f6 b3 8. f7 b2 9. f8=Q b1=Q 10. d7+ $18) 5. Ke7 Bc8 6. Kd8 Ba6 7. Kd7 $1 (7. Kc7 $2 Bb5 8. Kxb6 Kb4 $1 $11) 7... Ka4 (7... Ka2 8. Kc7 Bb5 9. Kxb6 $18) 8. Ke7 $1 (8. Kxe6 $2 Bc8+ 9. d7 Bxd7+ 10. Kxd7 b5 11. f5 b4 12. f6 b3 13. f7 b2 14. f8=Q b1=Q 15. Qa8+ Kb3 $1 $11) 8... Bc8 9. Kd8 Ba6 10. Kd7 $1 {zugzwang} Ka5 (10... Ka3 11. Kxe6 Bc8+ 12. d7 Bxd7+ 13. Kxd7 b5 14. f5 b4 15. f6 b3 16. f7 b2 17. f8=Q+ $18 {, check}) (10... Bb5+ 11. Kxe6 Bc6 12. f5 b5 13. f6 b4 14. f7 b3 15. f8=Q $18) 11. Kxe6 Bc8+ 12. d7 Bxd7+ 13. Kxd7 b5 14. f5 b4 15. f6 b3 16. f7 b2 17. f8=Q b1=Q 18. Qa8+ Kb6 19. Qb8+ 1-0

[Event "hm.. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023.08"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "2K4k/5P1p/3Pn3/7P/8/1P2P3/Br6/8 w - - 0 1"] [PlyCount "23"] [EventDate "2023"] 
 1. Kd7 $1 Nf8+ 2. Ke7 $1 ({Thematic try :} 2. Ke8 $2 Kg7 3. h6+ Kf6 $1 4. Kxf8 Rxa2 5. Kg8 Rg2+ $1 6. Kf8 Ra2 $1 $11 {Positional draw}) 2... Kg7 3. h6+ Kh8 $1 4. Kxf8 Rxb3 $1 5. Bb1 $3 (5. d7 $2 Rxe3 6. d8=Q Re8+ $1 $11) 5... Rd3 $1 (5... Rxb1 6. Ke7 (6. Ke8 Rb8+ 7. Ke7 {waste of time}) 6... Rb7+ 7. Kf6 $1 (7. Ke6 Re7+ $1 8. Kd5 Re5+ $1 9. Kc6 Rc5+ $1 10. Kd7 Rc7+ $11) 7... Rxf7+ $1 8. Ke6 $1 Rf3 9. e4 $1 Kg8 10. d7 Rd3 11. Ke7 $1 $18) 6. d7 $1 (6. Ke7 $2 Rxe3+ 7. Kd8 Rf3 $1 8. Bg6 (8. Bf5 Rxf5 9. Ke7) 8... Rxf7 $1 9. Bxf7 $11) 6... Rxd7 7. Bxh7 $1 ({Logical try :} 7. Bg6 $2 Rd3 $3 (7... hxg6 8. Ke8 $18) 8. e4 Re3 9. Ke7 Rxe4+ 10. Kf6 Rf4+ $1 11. Bf5 {Position X2 with h7 pawn} Rxf5+ 12. Kxf5 { model stalemate}) 7... Rd3 $1 {Switchback} (7... Kxh7 8. Ke8 $18) 8. e4 $1 Re3 9. Ke7 Rxe4+ 10. Kf6 Kxh7 (10... Rf4+ 11. Bf5 {Position X1} Rxf5+ 12. Kxf5 { no stalemate}) 11. Kg5 $1 (11. f8=Q $2 Rf4+ $11) 11... Re8 (11... Re5+ 12. Kg4 $1 $18) 12. fxe8=N $1 {with final position of Kakovin,1952} 1-0

[Event "hm.. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023.05.02"] [Round ""] [White "Alexander Zhukov &, Sergey Osintsev"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/8/2R4R/4k3/6q1/8/5P1p/5K2 w - - 0 1"] [PlyCount "11"] [EventDate "2023"] 
 {White must save material 2 Rook and Pawn vs. Queen to win} 1. Rh5+ $1 (1. Rc5+ $2 Kd4 $11) (1. Rxh2 $2 Qd1+ $11) 1... Kd4 (1... Qxh5 2. Rc5+ $18 {skewer}) ( 1... Ke4 2. Rc4+ $18 {skewer}) 2. Rd6+ (2. Rxh2 $2 Qd1+ 3. Kg2 Qg4+ $11 { perpetual check}) 2... Ke4 (2... Kc3 3. Rxh2 Qe4 4. Rh3+ $18) 3. Rxh2 Qf4 { double attack} 4. Rd2 $3 {indirect Rook defense main line A} ({thematic try} 4. Rdh6 $2 {direct Rook defense} Qc1+ 5. Kg2 Qg5+ 6. Kh1 Qc1+ $11 {perpetual check }) ({thematic try} 4. Rhh6 $2 {direct Rook defense} Qc1+ 5. Kg2 Qg5+ $11) 4... Kf5 ({main line B} 4... Qxd2 5. f3+ Kxf3 6. Rxd2 $18) ({main line C} 4... Qxh2 5. f3+ Kxf3 6. Rxh2 $18) 5. Rh5+ $1 ({thematic try} 5. Rd5+ $2 Ke6 $1 6. Rhh5 { direct Rook defense} Qc4+ $1 7. Kg1 Qg4+ $1 (7... Qxd5 $2 {bad exchange} 8. Rxd5 Kxd5 9. Kg2 Ke4 10. Kg3 Ke5 11. Kg4 Kf6 12. Kf4 $18) 8. Kh2 Qf4+ (8... Qf3 $2 9. Rhe5+ $1 Kf6 10. Kg1 $1 (10. Rf5+ $2 {bad exchange} Qxf5 11. Rxf5+ Kxf5 12. Kg3 Kg5 $11) 10... Qg4+ 11. Kf1 Qc4+ 12. Ke1 Qc3+ 13. Ke2 Qb2+ (13... Qxe5+ {bad exchange} 14. Rxe5 Kxe5 15. Ke3 $18) 14. Kf3 $1 (14. Ke3 $2 Qxe5+ { good exchange} 15. Rxe5 Kxe5 16. Kf3 Kf5 17. Kg3 Kg5 $11) 14... Qxe5 15. Rxe5 Kxe5 16. Kg4 Kf6 17. Kf4 $18) 9. Kg2 Qg4+ $11 {perpetual check}) 5... Kg6 6. Rhd5 $1 $18 {direct Rook defense} ({thematic try} 6. Rdd5 $2 { direct Rook defense} Qc4+ $1 7. Kg1 Qg4+ 8. Kh2 Qf4+ $1 (8... Qxh5+ $2 { bad exchange} 9. Rxh5 Kxh5 10. Kh3 $1 Kg5 11. Kg3 Kf5 12. Kf3 $18) 9. Kg2 Qg4+ $1 10. Kf1 Qc4+ $11 {perpetual check}) 1-0

[Event "hm.. UAPA 22th Ty Sec. B1 Win"] [Site ""] [Date "2023"] [Round ""] [White "Evgeny Kopylov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "1r6/1Pp5/Rp2K3/1P6/pPP5/1k6/6B1/2r5 w - - 0 1"] [PlyCount "19"] [EventDate "2023"] 
 {#} 1. Kd7 $1 (1. Ra8 $2 Rxb7 2. Bxb7 Kxc4 $1 3. Rxa4 Kxb5 $11) 1... Rxc4 $1 ( 1... Kxc4 2. Kxc7 Rxb7+ 3. Kxb7 Kxb4 4. Kxb6 Rg1 5. Bc6 $18) 2. Bd5 (2. Ra8 $2 Rxb7 3. Bxb7 Kxb4 4. Bc6 Rc5 $11) 2... Rxb7 $1 {Take any rook! But...} 3. Kc8 $1 (3. Bxb7 $2 Kxb4 4. Bc6 Rc5 5. Kxc7 Rxb5 6. Bxb5 Kxb5 7. Ra8 Kb4 $11) (3. Bxc4+ $2 Kxc4 4. Kc6 Rb8 5. Rxa4 Rh8 $11) 3... Kxb4 {Main A} ({Main B} 3... Kc3 4. Bxc4 (4. Kxb7 $2 Rxb4 5. Kc6 Rd4 $1 6. Ra7 Kb4 7. Rxc7 a3 8. Ra7 Rh4 9. Kxb6 Rh5 $1 10. Bc6 Kb3 11. Be8 Re5 $1 12. Bf7+ Kb4 $11) 4... Kxc4 5. Rxa4 Kxb5 6. Ra1 $1 ({Try} 6. Ra8 $2 c5 7. Kxb7 cxb4 $1 8. Rc8 b3 $11) 6... c5 7. Kxb7 cxb4 8. Rb1 $1 Kc5 9. Ka6 Kc4 10. Kxb6 b3 11. Ka5 Kc3 12. Ka4 b2 13. Ka3 $18) 4. Bxc4 Kxc4 5. Rxa4+ Kxb5 6. Ra8 $1 ({Try} 6. Ra1 $2 c5 7. Kxb7 c4 8. Rc1 Kc5 $1 9. Ka6 Kb4 10. Kxb6 c3 $11) 6... c5 (6... Kc6 7. Ra6 $1 $18) 7. Kxb7 c4 8. Rc8 Kb4 9. Kc6 $1 c3 10. Kd5 {Change solutions and tries (Ra8, Ra1) in two variants. Rook attacks pawn from back and front - training position} 1-0

[Event "c. UAPA 22th Ty Sec. B1 Win"] [Site "Композиция"] [Date "2023"] [Round ""] [White "Mario G. Garcia & Valery, Kalashnikov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "8/6P1/8/k7/8/2bP4/2n1K2B/7r w - - 0 1"] [PlyCount "17"] [EventDate "2022"] [TimeControl "300"] 
 1. Bc7+ Kb5 $1 (1... Ka4 2. g8=Q Re1+ 3. Kf2 Nb4 4. Qg4 Kb3 5. Qc4+ Kc2 6. d4 Re4 7. Bb6 $18) (1... Kb4 2. Bd6+ Kb5 3. g8=Q Re1+ 4. Kf3 Rf1+ 5. Kg2 Ne3+ 6. Kh3 $18) 2. g8=Q Re1+ (2... Nd4+ 3. Kf2 Be1+ 4. Kg2 $18) 3. Kf2 $1 ({Logic try } 3. Kf3 $2 Re3+ 4. Kg4 Rxd3 {and poorly} 5. Qd5+ $4 (5. Qe8+ Kc4 $11) 5... Rxd5 $19) 3... Bd4+ 4. Kf3 Re3+ (4... Rf1+ 5. Ke4 Re1+ 6. Kd5 $1 $18 ({But not } 6. Kf5 $2 Ne3+ 7. Kf4 Kc6 8. Kf3 Rf1+ 9. Ke4 Kxc7 10. Kxd4 Nf5+ $11)) 5. Kg4 $1 ({Try} 5. Kf4 $2 Rxd3 6. Qd5+ Ka4 $1 7. Qc4+ Nb4 8. Bd6 Be3+ 9. Ke5 Rd4 $11) 5... Rxd3 6. Qd5+ $1 {Now it is possible!} Ka4 $1 (6... Kb4 7. Qb7+ $1 Kc4 8. Qa6+ Kc3 9. Ba5+ $18) 7. Qc4+ (7. Qc6+ $2 Kb3 8. Qb5+ Nb4 9. Bd6 Bc3 10. Bxb4 Rd4+ $11) 7... Nb4 8. Bd6 Bc3 9. Bc5 $1 {win} 1-0

"STUDIES DRAW"

SECTION THEME FREE: B.2.

[Event "2.p. UAPA 22th Ty Sec. B2 Draw"] [Site ""] [Date "2023"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/2P2kpP/5Pn1/4b1PK/2r5/3b4/2N5/R2B4 w - - 0 1"] [PlyCount "17"] [EventDate "2023"] 
 1. Nd4 $3 {Interference and Deflection} (1. Ra4 $2 Rxa4 $19) 1... Rxd4 (1... Bxd4 $2 {4-th rank is closed}) 2. Ra4 $1 {against mate on h4 threat} (2. c8=Q $2 Rh4#) ({Thematic try :} 2. h8=N+ Nxh8 3. Bb3+ Bc4 4. fxg7 ({or} 4. c8=Q g6+ 5. Kh6 Rh4#) 4... Kxg7 5. c8=Q Be2+ $19) 2... Be2+ $1 {removing a4 defender} ( 2... Rxa4 3. Bb3+ Rc4 4. h8=N+ Nxh8 5. Bxc4+ Bxc4 6. c8=Q Be2+ 7. Kh4 Ng6+ 8. Kh3 $11) 3. Bxe2 Rxa4 4. h8=N+ $3 {First knight promotion} Nxh8 5. fxg7 (5. c8=Q $2 g6+ 6. Kh6 Rh4+) 5... Ra8 (5... Ng6 $2 6. g8=Q+ Kxg8 7. c8=Q+) 6. Ba6 $1 (6. Bg4 $2 Bxc7 7. Kh6 Ng6 {/Be5-+}) 6... Bxc7 7. Kh6 $1 { Bc4 and Kh7 is threatened} Rxa6+ (7... Kg8 {/Ng6/Be5} 8. Bc4+ $11) 8. Kh7 Rg6 ( 8... Ra8 9. gxh8=Q $11) 9. gxh8=N+ $1 $11 { Second knight promotion on the same square} ({Thematic try :} 9. gxh8=Q $2 Rxg5 10. Kh6 Bf4 11. Qd4 Rf5+ 12. Kh7 Rh5#) 1/2-1/2

[Event "4.p. UAPA 22th Ty Sec. B2 Draw"] [Site ""] [Date "2023"] [Round ""] [White "Michael Pasman"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "5b2/3K4/8/6P1/3B2Pp/1k1n2p1/8/5N2 w - - 0 1"] [PlyCount "29"] [EventDate "2023"] 
 1. g6 $1 (1. Ke8 $2 Bc5 2. Bxc5 Nxc5 3. Ke7 g2 4. Nd2+ Kc3 5. Nf3 Nd3 6. g6 Ne5 7. g7 Nxf3 8. g8=Q g1=Q $19) 1... Kc4 (1... Nf4 2. g7 Bxg7 3. Bxg7 g2 4. Nd2+ Kc2 5. Nf3 Kd3 6. Bd4 Ke4 {double attack} 7. Nxh4 $11) (1... g2 2. Nd2+ Kc2 ( 2... Kb4 3. Bg1 Nf4 4. Nf3 h3 5. Bh2 Nxg6 6. Ng1 Kc4 7. Ke6 $11) 3. Nf3 $11) 2. Ba7 $1 (2. Bb6 $2 Kb5 $1 3. Bg1 Nf4 $19) 2... Ne5+ (2... Nf4 3. Bb8 g2 4. Ne3+ $11) (2... g2 3. Ne3+ Kc3 4. Nxg2 h3 5. Bg1 hxg2 6. Ke8 Bg7 7. Kf7 Bh8 8. g7 Ne5+ 9. Kg8 Bxg7 10. Kxg7 $11) 3. Ke6 $1 ({Logical try :} 3. Ke8 $2 Nxg6 4. Bb8 g2 5. Ne3+ Kc5 6. Nxg2 {position X1 with white king on e8} h3 7. Ne3 { black has :} Bd6 $19) 3... Nxg6 4. Bb8 $1 g2 5. Ne3+ Kd4 (5... Kc5 6. Nxg2 { position X2 black has no Bd6}) (5... Kd3 6. Nxg2 h3 7. Ne1+ Ke4 {as main}) 6. Nxg2 h3 7. Ne1 $1 (7. Nh4 $2 Nxh4 $19) 7... Ke4 8. Nd3 $1 (8. Kf7 $2 { double attack, too early} Nf4 $1 $19 9. Nd3 Nxd3 $19) 8... Kxd3 9. Kf7 { double attack} Nf4 10. Bxf4 Bh6 11. Bh2 Ke3 12. Kg6 Bf4 13. Kh5 $1 Bxh2 14. Kh4 Kf3 15. Kxh3 $11 1/2-1/2

[Event "sp'.p. UAPA 22th Ty Sec. B2 Draw"] [Site ""] [Date "2023"] [Round ""] [White "Igor Zaitsev, Oleg Pervakov"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "n1N3R1/7k/6NP/2n5/1K1P4/8/3p4/b7 w - - 0 1"] [PlyCount "23"] [EventDate "2023"] 
 {#} 1. Nce7 $1 ({Try} 1. Nge7 $2 Bxd4 $1 2. Rg7+ Kxh6 $1 3. Nf5+ Kh5 4. Rh7+ Kg5 5. Rh1 Nd3+ $1 6. Kc4 Ne1 7. Nxd4 d1=Q 8. Rxe1 Qa4+ $1 9. Kd3 Qa6+ $19) (1. Rh8+ $2 Kxg6 2. Rg8+ Kxh6 3. Rg1 Nd3+ 4. Kc4 Ne1 $19) 1... Bxd4 2. Rg7+ $1 Kxh6 $1 (2... Bxg7 3. hxg7 Kxg7 4. Nf5+ Kxg6 5. Ne3 $11) 3. Nf5+ Kg5 (3... Kh5 $4 4. Nf4#) 4. Nxd4 Nd3+ {Main A} ({Main B} 4... Na6+ 5. Kc3 $1 d1=Q 6. Nh4+ $3 (6. Nh8+ $2 Kf4 7. Rf7+ Ke5 8. Ng6+ Kd6 9. Rf6+ Kd7 $1 10. Ne5+ Kc8 11. Rxa6 Nc7 $19) (6. Ne5+ $2 Kf6 7. Rg6+ Kxe5 $19) (6. Nf8+ $2 Kf6 7. Rg6+ Kf7 8. Rxa6 Qe1+ $19) 6... Kh5 (6... Kf6 7. Rg6+ Kf7 8. Rxa6 $11) 7. Rh7+ Kg4 8. Rg7+ Kxh4 (8... Kh3 9. Ndf5 Nb6 10. Rg3+ Kh2 11. Rg2+ Kh3 12. Rg3+ $11) (8... Kf4 9. Rf7+ Ke5 10. Nhf3+ Kd6 11. Rf6+ Kc5 12. Rxa6 $11) 9. Nf5+ Kh5 (9... Kh3 $2 10. Rh7+ Kg4 11. Ne3+ $18) 10. Ng3+ Kh6 11. Nf5+ $11 {Perpetual check}) ({Main C} 4... d1=Q 5. Kxc5 Qc1+ 6. Kd6 $1 Qa3+ (6... Kf6 7. Ra7 $1 Nb6 8. Ne7 $11) 7. Ke6 $1 Qa6+ 8. Ke5 $1 (8. Kf7 $2 Qf6+ 9. Kg8 Kh6 $1 $19) 8... Qa5+ (8... Qf6+ 9. Ke4 Qxg7 10. Ne6+ $11) 9. Ke6 (9. Ke4 $2 Kf6 $19) 9... Nc7+ (9... Qb6+ 10. Ke5 Qc5+ 11. Ke4 Kf6 12. Rg8 Nb6 13. Nf4 $1 $11) 10. Rxc7 $1 Qxc7 11. Ne7 $1 (11. Ne5 $2 Kf4 $1 $19) 11... Qc4+ (11... Qc5 12. Ndc6 $1 $11) 12. Ke5 Qc7+ (12... Qc5+ 13. Nd5 $11) 13. Ke6 $11 {Positional draw}) 5. Ka3 $1 (5. Kc3 $2 d1=Q 6. Ne5+ Kf6 7. Rg6+ Kxe5 8. Rg1 Ne1 $11 (8... Qa4 $11)) 5... d1=Q (5... Kf6 6. Ne5 $1 Kxg7 7. Nf5+ Kf6 8. Ne3 Kxe5 9. Nc4+ $11) 6. Ne5+ Kh5 7. Rh7+ Kg5 8. Rg7+ Kf4 {Main A1} ({Main A2} 8... Kf6 9. Rg6+ Ke7 $5 10. Nf5+ Kf8 11. Rf6+ Ke8 12. Re6+ Kd8 13. Rd6+ Kc7 $1 14. Rd7+ $1 (14. Rxd3 $2 Qa1+ $19) (14. Nxd3 $2 Qf3 $19) 14... Kb8 15. Rd8+ (15. Nxd3 $2 Qf3 $1 16. Ne7 Nb6 $19) 15... Ka7 $1 (15... Kb7 16. Nd6+ $11) 16. Nxd3 (16. Rd7+ $2 Ka6 17. Nxd3 Qf3 $1 18. Ne7 Nb6 $19) 16... Qf3 ( 16... Nb6 17. Rd4 $1 Qf3 18. Nd6 $11) (16... Qc2 17. Rd7+ Kb8 18. Kb4 $1 Nb6 19. Rd4 $11) 17. Ne7 Nb6 18. Ng6 $1 Qf6 (18... Nc4+ 19. Kb4 $11) 19. Nge5 $1 ( 19. Nde5 $2 Nc4+ $1 20. Nxc4 Qc3+ $1 $19) 19... Qxd8 (19... Nc4+ 20. Nxc4 Qxd8 21. Nde5 $11) 20. Nc6+ $11) 9. Rg4+ $1 Kxe5 ({Or} 9... Ke3 10. Nc4+ Kf2 11. Rg2+ $1 Kxg2 12. Ne3+ $11) 10. Rg1 $1 {Domination} Qh5 ({Or} 10... Ne1 11. Rxe1+ Qxe1 12. Nf3+ $11) 11. Rg5+ $1 Qxg5 12. Nf3+ $11 1/2-1/2

[Event "hm. UAPA 22th Ty Sec. B2 Draw"] [Site ""] [Date "2023.12.11"] [Round ""] [White "Vladimir Neistadt, Sergey Osintsev"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "2B1k2r/1N6/P6p/N7/rp1p2pp/3p4/1pRP4/bK6 w k - 0 1"] [PlyCount "27"] [EventDate "2023"] 
 1. Rc7 ({Try} 1. Rc5 $2 O-O $1 2. Be6+ Kg7 $1 3. Rc7+ Kg6 ({no} 3... Kf6 $2 4. Bxg4 Re8 5. Rc6+ Kg5 6. Re6 Rf8 7. Bh3 $11) 4. Rf7 Re8 $19) (1. Nd6+ $2 Ke7 $1 2. Rc7+ Kxd6 $19) 1... O-O $1 2. Be6+ Kh8 3. Rc8 (3. Rf7 $2 Re8 $1 $19) 3... Rxc8 4. Bxc8 Ra3 $1 5. Bxg4 $1 ({Thematic try} 5. Be6 $2 Rc3 $1 6. Nb3 Rc6 ({no } 6... g3 $2 7. a7 Rc8 8. Bxc8 g2 9. Nxa1 bxa1=Q+ 10. Kxa1 g1=Q+ 11. Kb2 Qd1 12. a8=Q Qc2+ 13. Ka1 Qc1+ 14. Ka2 $11 {Black gives perpetual check}) 7. N7c5 ( 7. a7 Ra6 $19) 7... Rc7 8. Bxg4 Rg7 9. a7 {Position A1 with bRg7} Rxa7 $19) 5... Rc3 $1 6. Nb3 $1 (6. dxc3 $2 bxc3 $1 ({no} 6... dxc3 $2 7. Bd1 c2+ 8. Bxc2 dxc2+ 9. Kxc2 {Position B1 with b4-pawn} b1=Q+ 10. Kxb1 Bd4 11. Nd6 $11) 7. Bd1 c2+ 8. Bxc2 dxc2+ 9. Kxc2 {Position B with d4-pawn} d3+ $19) 6... Rxb3 (6... Rc6 7. N7c5 Rg6 8. a7 {Position A with bRg6} Rg8 $11) 7. Bd1 $1 (7. Bd7 $2 Rc3 $1 $19) (7. a7 $2 Ra3 $19) (7. Nc5 $2 Ra3 $19) 7... Ra3 (7... Rc3 $4 8. dxc3 $18) 8. Ba4 $1 Rxa4 (8... h3 9. a7 Rxa4 10. Na5 Rxa5 11. a8=Q+ Rxa8 $11 { stalemate}) 9. Na5 $1 Rxa5 10. a7 Rg5 $1 (10... Rxa7 $11 {stalemate}) 11. a8=Q+ Rg8 12. Qh1 $1 Rc8 $1 13. Qa8 $1 ({Try} 13. Ka2 $2 b3+ $1 14. Ka3 b1=Q $1 15. Qxb1 b2 $1 $19 ({no} 15... Ra8+ $2 16. Kb4 b2 17. Kc5 $1 Rc8+ 18. Kd6 $1 Rc1 19. Qa2 Rg1 ({or} 19... b1=Q 20. Qa8+ Kg7 21. Qg2+ Kh8 22. Qa8+ Kh7 23. Qe4+ $11 {perpetual check}) 20. Qa8+ Kh7 21. Qb7+ Kg6 22. Qe4+ $11 {perpetual check} )) 13... Rg8 (13... Rxa8 $11 {stalemate}) 14. Qh1 $11 {positional draw} 1/2-1/2

[Event "c. UAPA 22th Ty Sec. B2 Draw"] [Site ""] [Date "2024.02.29"] [Round ""] [White "Mario Garcia"] [Black ""] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/5k2/1P6/2P1np2/1K6/8/6R1/5r2 w - - 0 1"] [PlyCount "17"] [EventDate "2024"] 
 1. Rb2 $1 {with two lines : A)} (1. Kb5 $2 Rb1+ 2. Ka6 Nd3 $1 (2... Rc1 $2 3. Rd2 Rxc5 4. b7 $11) 3. c6 Nb4+ 4. Kb7 Nd5 $19) (1. Kc3 $2 Rc1+ 2. Kd4 Ke6 3. Rg8 Rc4+ 4. Ke3 Rb4 5. Rf8 Rb3+ 6. Ke2 Nc6 $19) 1... Rc1 ({B)} 1... Nd3+ 2. Kc3 Rf3 (2... Nxc5 3. Kd4 Nd7 4. Ke3 $1 Kf6 5. b7 $1 f4+ 6. Ke2 $14) 3. c6 $3 (3. b7 $2 Nxc5+ 4. Kd4 Nxb7 5. Rxb7+ Kf6 $1 $19) (3. Rb1 $2 Nxc5+ 4. Kd4 Nd7 5. b7 Kf6 $1 6. b8=Q Nxb8 7. Rxb8 Kg5 {/Rg3-+}) (3. Rh2 $2 Nxc5+ 4. Kc4 Ne4 $1 5. b7 Nd6+ 6. Kd5 Nxb7 7. Rh7+ Kf6 {/g6-+}) 3... Ne5+ 4. Kd2 $1 (4. Kd4 $2 Nxc6+ 5. Kd5 Nb8 6. Ke5 Nd7+ 7. Kd6 Nxb6 $19) 4... Rf2+ (4... Nxc6 5. Rb1 {/b5} Kf6 6. b7 Nb8 7. Ke2 $11) 5. Kd1 $1 (5. Ke1 $2 Nd3+ 6. Kd1 Nxb2+ 7. Ke1 Nd3+ 8. Kd1 Rd2+ $1 9. Kxd2 Ne5 10. c7 Nc4+ $19) 5... Rxb2 6. c7 Rb1+ 7. Ke2 $1 (7. Kc2 $2 Rxb6 8. c8=Q Rc6+ 9. Qxc6 Nxc6 $19) 7... Rc1 8. b7 $11) 2. Kb5 $1 (2. b7 $2 Nd7 $19) 2... Ke6 (2... Nd7 3. Rd2 Nxc5 4. Rd5 $1 $11) 3. b7 Nd7 4. Re2+ $3 (4. c6 $2 Rc5+ $1 (4... Nb8 $2 5. Rh2 Nxc6 6. Rh8 Kd6 7. Rf8 Rb1+ 8. Ka6 $11) 5. Ka6 Rxc6+ $19) 4... Kf6 5. Kc6 $1 (5. Rd2 $2 Rb1+ 6. Kc6 Nxc5 7. Kxc5 Rxb7 $19) 5... Nxc5 6. Re1 $1 {suicide rook} (6. b8=Q $2 Na6+ $19) 6... Rc2 7. Re2 $1 Rc3 8. Re3 $1 Rc1 (8... Rxe3 9. b8=Q $11) 9. Re1 $11 {positional draw} 1/2-1/2