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For the 64th anniversary of
Osintsev, Sergei 1960
The following studies are (prelimanary) awarded:
[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Alexey Popov"] [Black "1 prize"] [Result "1/2-1/2"] [SetUp "1"] [FEN "7k/6R1/b3K3/8/R7/1p6/Q3p3/2q2B2 w - - 0 1"] [PlyCount "26"] [EventDate "2024"] 1. Rg8+ $1 (1. Qxe2 $2 Bxe2 2. Rga7 Bg4+ 3. Rxg4 Qe3+ 4. Kd5 Qxa7 $19) 1... Kh7 $3 2. Rh4+ $1 Kxg8 3. Qxb3 Bc4+ $1 4. Rxc4 e1=Q+ 5. Be2 $1 (5. Kf5 $2 Qb1+ 6. Re4+ Qxb3 7. Rxe1 Qf3+ 8. Kg5 Qg3+ $19) 5... Qxe2+ 6. Re4 $1 Qxe4+ 7. Kf6+ Kh7 (7... Qcc4 $4 8. Qb8+ Kh7 9. Qa7+ Kh6 10. Qg7+ Kh5 11. Qg5#) 8. Qg8+ $1 Kh6 $1 (8... Kxg8 $11) 9. Qh8+ Qh7 10. Qf8+ Kh5 11. Qe8+ Kg4 (11... Kh4 12. Qe1+ $1 Qxe1 $11) 12. Qe2+ Kf4 (12... Kg3 13. Qe3+ $1 Qxe3 $11) 13. Qc4+ $1 Qxc4 $11 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Eduard Eylazyan"] [Black "2 prize"] [Result "1-0"] [SetUp "1"] [FEN "4n3/5n2/k2P1P2/3KP3/4p3/1B5b/8/7N w - - 0 1"] [PlyCount "23"] [EventDate "2023.."] 1. Nf2 $1 (1. Kxe4 $2 Nfxd6+ $1 2. exd6 Nxf6+ $11) (1. Ng3 $2 Nfxd6 2. Nxe4 Bg2 3. Bc2 Bxe4+ 4. Bxe4 Nf7 $1 $11) 1... Bf5 $1 (1... Bg2 2. Ke6 e3 3. Ng4 e2 4. Bc4+ $18) 2. Nxe4 Bxe4+ 3. Ke6 $1 (3. Kxe4 $2 Nfxd6+ 4. exd6 Nxf6+ $1 5. Ke5 Nd7+ $11) 3... Bg6 4. Bc2 $1 {A logically important intermediate move. The Black Bishop is forced to move from g6 to h5. Why White needs this, we will find out later/\} ({Logical try} 4. Ba4 $2 Nc7+ $1 ({No} 4... Nexd6 $2 5. exd6 $1 Nh6 6. d7 $1 Bf5+ 7. Kd6 Bxd7 8. Bxd7 $1 Kb6 9. Be6 $1 $18) 5. dxc7 Kb7 $1 6. Be8 Nxe5 $1 {Position A1 with a protected bBg6} 7. Bxg6 Nxg6 8. Kd7 Ne5+ 9. Kd6 Ng6 10. Kd7 Ne5+ 11. Ke6 Ng6) 4... Bh5 5. Ba4 $1 Nexd6 {Main line} ({ Main line} 5... Nc7+ 6. dxc7 Kb7 7. Be8 $1 (7. Bd1 $2 Bg6 8. Bc2 Bh5 $11) 7... Nxe5 {Position A with a defenseless bBh5} 8. Bxh5 $18) 6. exd6 Ka5 (6... Kb6 7. Ke7 Kc5 8. d7 Bg6 9. Bc2 Bh5 10. Bd1 Bg6 11. Bg4 Ne5 12. Kf8 Nxd7+ 13. Bxd7 $18 ) 7. Bd1 $1 {The goal of the second logical maneuver is to move the black Bishop back from h5 to g6!} ({Logical try} 7. Bb3 $2 Nh6 $1 ({No} 7... Kb6 $2 8. Bd1 $1 Bg6 9. Ke7 $1 Ne5 10. Ba4 $1 Kc5 11. d7 $1 Nxd7 12. Bxd7 $1 Kd5 13. Be8 $1 $18) 8. Ke7 Nf5+ $1 9. Kd7 Kb6 10. Bc2 {Position B1 with bBh5} Nh6 $1 $11) (7. Be8 $2 Nxd6 8. Bxh5 Ne4 9. f7 Ng5+ $11) 7... Bg6 8. Bb3 $1 (8. Ke7 Ne5 9. Ke6 Nf7 {waste of time}) 8... Nh6 9. Ke7 $1 Nf5+ 10. Kd7 Kb6 (10... Nd4 11. Bd5 $1 (11. Kc8 Nxb3 12. d7 Bf5 13. f7) 11... Kb6 12. Kc8 Bf5+ 13. d7 Bxd7+ 14. Kxd7 $18) 11. Bc2 $1 {Position B with the bBg6} Nh6 12. Bxg6 $18 { Changing the goal of a logical maneuver.}
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Oleg Pervakov"] [Black "3 prize"] [Result "1-0"] [SetUp "1"] [FEN "6k1/6p1/2p2p1P/q2P1K1P/8/8/8/3Q4 w - - 0 1"] [PlyCount "23"] [EventDate "2024.."] 1. Kg6 Qa2 $1 (1... Qxd5 2. Qxd5+ cxd5 3. hxg7 $18) (1... Qb4 2. h7+ Kh8 3. d6 Qe4+ 4. Kf7 Qc4+ 5. Kf8 $18) 2. h7+ (2. d6 $2 Qf7+ $1 (2... Qg2+ 3. Kf5 Kf8 4. h7 Qh3+) 3. Kf5 Qd7+ 4. Kf4 gxh6 $11) 2... Kh8 3. h6 $1 (3. d6 $2 Qe6 $1 4. d7 f5+ 5. Kg5 Qh6+ 6. Kxf5 Qf6+ 7. Kg4 Qe6+ {eternal check}) (3. dxc6 $2 Qg2+ 4. Kf7 Qxc6 $11) (3. Qg4 $2 Qb1+ $1 4. Kf7 Qb7+ $11) 3... Qg2+ (3... gxh6 4. dxc6 Qg2+ 5. Kf7 $18) 4. Kf7 cxd5 5. Qe2 $1 { Only this way! To have a chance to get to the 8th horizontal} (5. Qd2 $2 Qg4 $1 $11 ({No} 5... Qg1 $2 6. Qe3 $1 Qg4 7. Qh3 $1 {main line})) ({Or} 5. Qh1 { (f1, f3)?} Qg5 $1 $11) 5... Qg3 $1 (5... Qg5 6. Qe8+ Kxh7 7. Qg8+ Kxh6 8. Qh8#) (5... Qxe2 6. hxg7+ Kxh7 7. g8=Q+ Kh6 8. Qg6#) 6. Qh2 $1 (6. Qe8+ $2 Kxh7 7. Qg8+ Kxh6 8. Qh8+ Kg5 9. Qxg7+ Kf4 $19 { Position A1 with Qg3 - The King protected the Queen}) ( 6. Qe3 $2 Qc7+ 7. Kg6 Qc2+ $1 $19) 6... Qg4 $1 7. Qh3 $1 Qg1 8. Qc8+ ({Waste of time} 8. Qe3 Qg4 9. Qh3) 8... Kxh7 9. Qg8+ Kxh6 10. Qh8+ Kg5 11. Qxg7+ Kf4 { Position A with Qg1} 12. Qxg1 {The idea of M. Matoush (Chess, Riga, 1979, 1st prize) is implemented in a purely queen form, without three pieces and with a choice of sacrifices (authors commentary).}
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "A. Avni & Y. Hoch"] [Black "4 prize"] [Result "1/2-1/2"] [SetUp "1"] [FEN "B3k3/1R3p2/8/3rp3/3n3p/1P1K1R2/p7/8 w - - 0 1"] [PlyCount "33"] [EventDate "2024.."] 1. Rf1 (1. Ra7 $2 Nc6+ $19) (1. Rb8+ $2 Rd8 2. Rxd8+ Kxd8 3. Rf1 Nxb3 4. Bd5 (4. Ke4 $2 Nd2+ $19) 4... a1=Q 5. Rxa1 Nxa1 6. Bxf7 Ke7 7. Bd5 Kf6 8. Ke4 Nc2 9. Kf3 Kg5 $19) 1... Rd8 2. Rbxf7 (2. Ke4 $2 Rxa8 3. Rfxf7 Ne6 $1 $19) 2... Nf5+ {cuts the connection between the white rooks} (2... Ne6+ 3. Kc4 (3. Ke3 Rxa8 4. R7f6 Ke7 5. Rf7+ Kd6 6. Ra1 Nf4 7. Rh7 Kd5 8. Rc7 $11) 3... Rxa8 4. R7f6 Ke7 5. Rf7+ Kd6 6. Ra1 $11) 3. Bd5 $1 {theme of unguarded guard} (3. Kc3 $2 Kxf7 4. Rxf5+ (4. Be4 Rd4 (4... a1=Q+ 5. Rxa1) 5. Bxf5 Rf4 6. Ra1 Rxf5 $19)) 3... Rxd5+ 4. Ke4 {fork} Rd4+ 5. Kxf5 {indirect defence:} Rf4+ {deflection} ( 5... Kxf7 $2 6. Kxe5+) 6. Rxf4 (6. Kxe5 $2 Rxf7 $19) 6... a1=Q { with both his rooks under attack, white seems to be lost...} 7. Ra4 Qb1+ 8. Kf6 Qf1+ 9. Kxe5 {[#] Rf7 is indirectly defended:} Qb5+ (9... Kxf7 10. Rf4+ $11) ( 9... Qxf7 10. Ra8+ Ke7 11. Ra7+ $11) 10. Kf6 Qc6+ 11. Kg7 Qg2+ 12. Kf6 Qf3+ 13. Kg5 {[#] doubling the same trick, with the king on g5} (13. Ke5 $2 Qe3+ (13... Qc3+) 14. Kf6 Qh6+ $19) 13... Qg3+ 14. Kf6 (14. Rg4 $2 Kxf7 $19) 14... Qd6+ 15. Kg7 Qg3+ 16. Kf6 Qf3+ 17. Kg5 $11 {Positional Draw} *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Valery Kalashnikov"] [Black "special prize"] [Result "1-0"] [SetUp "1"] [FEN "7q/3K2R1/6B1/8/1N6/8/2p1R3/3k4 w - - 0 1"] [PlyCount "19"] [EventDate "2020.."] 1. Rge7 Qh3+ (1... Qd4+ 2. Ke8 Qxb4 3. Bxc2+ $18) (1... c1=Q 2. Re1+ Kd2 3. R7e2+ Kc3 4. Na2+ $18) 2. Kd8 $1 (2. R7e6 $2 c1=Q 3. Re1+ Kd2 4. Rxc1 Kxc1 $11) (2. Ke8 $2 Qc8+ 3. Kf7 Qc4+ 4. R7e6 c1=Q 5. Re1+ Kd2 6. Rxc1 Kxc1 $11 (6... Qxc1)) 2... Qh8+ 3. Be8 Qd4+ 4. Rd7 {pin} c1=Q $1 {(line A)} ({line B:} 4... Kxe2 5. Bh5+ Kf1 (5... Ke3 6. Nxc2+ $18 {double attack}) (5... Kf2 6. Rxd4 c1=Q 7. Nd3+ $18 {double attack}) 6. Rxd4 c1=Q 7. Rd1+ {double attack, win}) 5. Bh5 $3 (5. Rxd4+ $2 Kxe2 6. Bh5+ Ke3 $11) (5. Ree7 $2 Qxd7+ 6. Rxd7+ Ke2 7. Bh5+ Ke3 8. Re7+ Kd4 $11) 5... Qxd7+ (5... Qcc4 6. Re4+ $18) (5... Qg5+ 6. Ree7+ $18 ) 6. Kxd7 Qh6 (6... Qg5 7. Re5+ $18 {battery attack, win}) 7. Rh2+ $1 Kc1 8. Nd3+ Kb1 9. Rh1+ Kc2 10. Bd1+ $18 {battery attack, win} *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Eduard Eylazyan"] [Black "special prize"] [Result "1/2-1/2"] [SetUp "1"] [FEN "4k3/3R2p1/8/P7/1n2Ppp1/p5b1/8/1KB5 w - - 0 1"] [PlyCount "24"] [EventDate "2024.."] 1. a6 $1 (1. Rd1 $2 a2+ $1 2. Kb2 f3 3. Be3 a1=Q+ 4. Rxa1 Be5+ $19) 1... a2+ ( 1... Nxa6 2. Rxg7 $1 f3 3. Rxg4 f2 4. Rg8+ Kf7 5. Rg5 f1=Q 6. Rf5+ Qxf5 7. exf5 Bd6 8. Ka2 Nb4+ 9. Kb3 a2 10. Bb2 $11) 2. Ka1 $1 Nxa6 3. Rxg7 f3 4. Rxg4 Be5+ { Black carries out a preliminary plan to remove two obstacles.} ({No} 4... f2 $2 5. Rg8+ Kf7 {The first obstacle} (5... Ke7 {The second obstacle} 6. Ba3+ $1 Kf7 7. Rf8+ $1 $11) 6. Rg5 $1 f1=Q 7. Rf5+ $1 Qxf5 8. exf5 $11) 5. Kxa2 Nb4+ { Black has blocked the a3-f8 diagonal.} 6. Kb1 $1 f2 { Now is the Blacks' main plan} 7. Rg8+ $1 { White carries out a preliminary plan to remove two obstacles} (7. Rg1 $2 fxg1=B (7... fxg1=N 8. Be3 Nh3 9. Bc5 Nc6 $19) 8. Be3 Bd4 $19 (8... Bxe3 $2 $11)) 7... Ke7 $1 {The goal of the preliminary plan - moving the black king to the a3-f8 diagonal - has been achieved. White's main plan} 8. Rg1 $1 {White exploits the consequences of Black's preliminary plan (King is stalemated, pawn is blocked): 8...fxg1Q(R) ïàò. Aikido effect!} fxg1=N (8... fxg1=B 9. Ba3 (9. Be3 $2 Bd4 $19 ) 9... Bc5 10. Bxb4 Bxb4 $11) 9. Be3 Nh3 10. Bc5+ Bd6 11. Bxd6+ Kxd6 12. e5+ Ke6 $11 {mutual implementation of a preliminary plan with the removal of two obstacles}
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Yuri Bazlov and Vladimir Neishtadt"] [Black "HM"] [Result "1-0"] [SetUp "1"] [FEN "4B1k1/8/7Q/6P1/2qn2KB/8/8/8 w - - 0 1"] [PlyCount "15"] [EventDate "2024.."] 1. Qg6+ (1. Qf6 $2 Qc8+ 2. Kg3 Ne2+ 3. Kf2 Qxe8 $11) 1... Kf8 2. Bf7 $1 (2. Kh5 $2 Qd5 3. Ba4 Qf3+ 4. Kh6 Nf5+ 5. Kh7 Qb7+ 6. Kh8 Qb2+ 7. Qf6+ Qxf6+ 8. gxf6 Nxh4 $11) (2. Qe4 $2 Qc8+ $19) 2... Ne6+ $1 (2... Qxf7 3. Qd6+ Kg7 4. Qxd4+ $18 ) (2... Qe2+ 3. Kf4 Qh2+ 4. Ke3 Qxh4 5. Qg8+ Ke7 6. Qe8+ Kd6 7. Qd8+ Kc6 8. Qd5+ Kc7 9. Qe5+ $18) 3. Kf5 Nd4+ 4. Ke4 Ne6+ 5. Ke5 Qf4+ 6. Kxe6 Qxg5 $1 7. Qg7+ $1 (7. Bxg5 $2 $11) (7. Qxg5 $2 $11) 7... Qxg7 8. Be7# *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Bondar I."] [Black "HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/1K2p1Pr/R2P1k2/8/3P1n2/2B5/4b2p/8 w - - 0 1"] [PlyCount "23"] [EventDate "2024.."] 1. g8=Q (1. d7+ $2 Bxa6+ $19) (1. d5+ $2 Kf7 $1 2. Ra8 Rxg7 3. Rh8 Nh5 4. d7 h1=Q 5. d8=Q Qb1+ $1 6. Kc7 (6. Ka8 Qa2+ 7. Kb8 Qb3+ $19) 6... Nf6 $1 7. Bxf6 Qc2+ (7... Kxf6 $2 8. Qf8+ $11) 8. Kb7 Qb3+ 9. Kc7 Kxf6 10. Qf8+ Kg6 $19) 1... h1=Q+ (1... Bxa6+ 2. Kxa6 h1=Q 3. d5+ $11) 2. d5+ $1 e5+ $1 (2... Kf5 3. d7 $1 Bxa6+ 4. Kxa6 Rh6+ 5. Ka7 $1 $11) 3. d7+ $1 Bxa6+ 4. Kxa6 Qf1+ $1 (4... Rxd7 5. Bxe5+ $1 Kf5 6. Qf8+ Kxe5 7. Qe8+ Kd6 8. Qf8+ Kxd5 {Position B c wKa6 and bQh1} 9. Qa8+ $1 (9. Qf5+ $2 Kd6 $19 (9... Kc6)) 9... Ke5 10. Qxh1 $11) 5. Kb6 Rxd7 6. Bxe5+ $1 Kf5 7. Qf8+ Ke4 $1 (7... Kxe5 8. Qe8+ Kd6 9. Qf8+ $1 Kxd5 { Position B1 c wKb6 and bQg1} 10. Qf5+ (10. Qa8+ $2 Ke5 $19 (10... Kd6)) 10... Kd6 11. Qf6+ Ne6 12. Qxf1 $11) 8. Kc6 $1 (8. Qxf4+ $2 Qxf4 9. Bxf4 Kxf4 10. Kc6 Rd8 $1 11. d6 Ke5 $19 {Position A1 c bRd8}) 8... Rh7 (8... Rxd5 9. Qxf4+ Qxf4 10. Bxf4 $11) 9. Qxf4+ $1 Qxf4 10. Bxf4 Kxf4 11. d6 Ke5 {Position A c bRh7} 12. d7 $11 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Michal Hlinka & Lubos Kekely"] [Black "HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "5r2/K4P1P/1B5p/3b4/7N/1p6/3P4/1k6 w - - 0 1"] [PlyCount "29"] [EventDate "2024.."] {Threat 1...Ra8 mate} 1. Ka6 $1 (1. Bd4 $2 Rxf7+ $19) 1... Bc4+ (1... Kc2 2. Bd4 b2 3. Bxb2 Kxb2 4. Ng6 Ra8+ 5. Kb5 $1 (5. Kb6 $2 Bxf7 6. h8=Q+ Rxh8 7. Nxh8 Be8 8. Kc5 Kc2 9. d4 h5 10. Kd5 Kd3) 5... Bxf7 6. h8=Q+ Rxh8 7. Nxh8 Be8+ 8. Kc4 $1 {as main}) 2. Ka5 Kc2 (2... Bxf7 3. Bd4 $11) 3. Bd4 (3. Ng6 $2 b2 $19) 3... b2 4. Bxb2 Kxb2 5. Ng6 Ra8+ 6. Kb4 $1 ({thematic try} 6. Kb6 $2 Bxf7 7. h8=Q+ Rxh8 8. Nxh8 Be8 $1 9. Kc5 Kc2 $1 10. d4 h5 11. Kd5 Kd3 $1 { echo-chameleon} 12. Ke5 Ke3 13. Kf5 (13. d5 h4 $19) 13... Kxd4 14. Ng6 Bxg6+ 15. Kxg6 h4 $19) 6... Bxf7 7. h8=Q+ Rxh8 8. Nxh8 Be8 $1 {now knight is in trap} 9. Kc4 Kc2 (9... h5 10. Kd4 $11) 10. d3 $1 {festina lente} (10. d4 $2 h5 11. Kd5 Kd3 12. Ke5 Ke3 13. Kf5 (13. d5 h4 $19) 13... Kxd4 $19) 10... h5 (10... Kd2 11. Kd4 Ke2 12. Ke4 h5 13. d4 {as main}) 11. Kd4 Kd2 {echo-chameleon} 12. Ke4 Ke2 13. d4 h4 14. Kf4 Kf2 15. Kg4 $11 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Gonzalez, Luis Miguel"] [Black "HM"] [Result "1-0"] [SetUp "1"] [FEN "2B5/2PP1K2/8/7k/8/4B3/5p2/5rr1 b - - 0 1"] [PlyCount "32"] [EventDate "2024.."] 1... Rg7+ $1 (1... Rc1 2. Bxf2 Rxc7 3. Bxg1 $18) 2. Kxg7 (2. Kf6 $2 Rxd7 3. Bxd7 Rc1 $1 $11) 2... Rg1+ 3. Kh8 $1 Rg8+ $1 (3... f1=Q 4. d8=Q Qf7 5. Bd4 $1 Rg6 6. Bg4+ $1 Rxg4 7. c8=Q $18) 4. Kxg8 f1=Q 5. d8=N $3 (5. d8=Q $2 Qf7+ $1 6. Kxf7 $11 {stalemate}) (5. d8=R $2 Qc4+ $1 6. Kf8 Qxc7 7. Rd5+ Kg6 $1 8. Bd7 Qb8+ 9. Be8+ Kf6 10. Bg5+ Ke6 $11) 5... Qf3 $1 (5... Qc4+ 6. Ne6 $18) 6. Ne6 $1 (6. Bb6 $2 Qg3+ $1 7. Kf8 Qd6+ 8. Ke8 Qg6+ $1 9. Kd7 Qxb6 $11) 6... Qa8 $1 ( 6... Qxe3 7. Bd7 $18 (7. Ng7+ Kg5 8. Bd7)) 7. Nf4+ $1 Kh4 (7... Kg5 8. Nd5+ Kg6 9. Ne7+ Kf6 10. Kf8 Qa3 11. Bd4+ $18) 8. Ng6+ Kg3 9. Ne7 Qa5 $1 10. Nf5+ $1 ( 10. Bf4+ $2 Kxf4 11. Bb7 Qg5+ $1 12. Kf7 Qh5+ 13. Ng6+ Kg5 $11) 10... Kg4 11. Ng7+ $1 (11. Nd6+ Kg3 12. Nf5+ Kg4) 11... Kg3 12. Bf4+ $1 (12. Bd7 $2 Qxc7 $11) 12... Kxf4 13. Bb7 $1 (13. Bd7 $2 Qxc7 14. Ne6+ Ke5 15. Nxc7 Kd6 $11) 13... Qa2+ (13... Qxc7 14. Ne6+ Ke5 15. Nxc7 $18) 14. Kf8 (14. Kh8 Qh2+ 15. Kg8 Qa2+) 14... Qa3+ 15. Kf7 $1 (15. Ke8 $2 Qb3 $1 16. c8=Q Qg8+ $11) 15... Qb3+ 16. Ne6+ Ke5 17. c8=Q $18 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "M.Pasman"] [Black "HM"] [Result "1-0"] [SetUp "1"] [FEN "7r/8/6q1/3pb3/2RN2bR/1B1k4/3P2P1/4KN2 w - - 0 1"] [PlyCount "19"] [EventDate "2024.."] 1. Nf3 $1 Bg3+ $1 (1... dxc4 2. Nxe5+ $18) (1... Bxf3 2. Bc2#) (1... Qe8 2. Ne3 $18) 2. Nxg3 Re8+ 3. Kd1 Bxf3+ 4. Ne2 $1 {Nowotny} (4. Kc1 $2 Re1+ $1 5. Kb2 $11) (4. gxf3 $4 Re1+ $1 5. Kxe1 Qxg3+ $19) 4... Bxe2+ 5. Kc1 { Now black has no Re1+} Bd1 $1 {against Bc2+ threat} (5... Re4 6. Rh3+ Bf3 7. Rxf3+ Ke2 8. Rxe4+ dxe4 9. Bc4+ Ke1 10. Rf1#) 6. Bxd1 (6. Kxd1 $2 Re1+ $1 { again!} 7. Kxe1 dxc4 $11) 6... Re4 $1 7. Rcxe4 (7. Rhxe4 $2 dxe4 $11) 7... Qc6+ $1 (7... dxe4 8. Bc2+ $1 Kd4 9. Rxe4+ $18) 8. Rc4 $1 {Switchback} dxc4 9. Re4 $1 {Second rook taking e4 square of the other rook} Qxe4 (9... Kxe4 10. Bf3+ $18) 10. Bc2+ $18 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Ural Khasanov"] [Black "HM"] [Result "1-0"] [SetUp "1"] [FEN "8/8/8/1q1pNK1P/k6P/1b5n/1P3B2/7R w - - 0 1"] [PlyCount "23"] [EventDate "2024"] 1. Ra1+ Ba2 (1... Kb4 2. Be1+ Kc5 3. Ra5 $18) 2. Rxa2+ Kb4 3. Bc5+ $1 (3. Be1+ $2 Kb3 4. Ra3+ Kc2 5. Rxh3 Qf1+ 6. Rf3 Qxe1 7. Rc3+ Kb1 $11) 3... Kxc5 (3... Qxc5 4. Nd3+ $18) (3... Kb3 4. Ra3+ Kxb2 5. Rxh3 Qxc5 6. Nd3+ $18) 4. Ra5 $1 Qxa5 5. b4+ $1 Qxb4 (5... Kxb4 6. Nc6+ Kb5 7. Nxa5 Kxa5 8. h6 $18) 6. Nd3+ Kd6 7. Nxb4 Ke7 8. Nd3 $1 (8. h6 $2 Kf8 9. Nd3 Kf7 10. h5 d4 $11) (8. Nxd5+ $2 Kf7 $11) 8... Kf7 (8... Kf8 9. Kg6 Kg8 10. h6 $18) 9. h6 d4 10. h5 (10. Ne5+ $2 Kg8 11. Kg6 Nf4+ $11) 10... Ng1 11. Ne5+ Kg8 12. Kg6 $18 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Ivan Belonozhko"] [Black "special HM"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/5P2/4bp1p/6pP/6nK/8/4P2k/8 w - g6 0 1"] [PlyCount "43"] [EventDate "2024"] 1. hxg6 Ne5 (1... Bxf7 2. gxf7 Ne5 3. f8=N $11) 2. f8=N $1 Bc4 3. g7 f5 (3... Bg8 4. Kh5 Kg3 5. Kxh6 Kg4 (5... Kf4 6. Ng6+ Ke4 7. Ne7 $11) 6. e4 $1 Kf4 7. Nh7 $1 Ng4+ 8. Kg6 Ne5+ (8... Ke5 9. Nf8 Kxe4 10. Nd7 Ne5+ (10... f5 11. Kg5 Ba2 12. Nc5+ $11) 11. Kxf6 Nxd7+ 12. Ke7 Ne5 13. Kf8 $11) 9. Kh6 Nf7+ 10. Kg6 Ne5+ 11. Kh6 $11) (3... Bf7 4. Nh7 Nd7 5. Nf8 Nc5 6. Kg4 h5+ 7. Kh4 $1 Ne4 8. Ng6 $1 $11) 4. Kh5 Ng4 5. Kg6 Kg3 (5... f4 6. Nd7 Kg3 7. Nc5 $1 Bd5 8. Nd7 Kf2 9. Kf5 f3 10. exf3 Kxf3 11. Kg6 Kf4 12. Nb6 $1 (12. Nc5 $2 Kg3 $1 $19) 12... Bb3 13. Nc8 $1 Bc2+ 14. Kh5 $1 $11) 6. Nd7 Kf4 7. Nc5 (7. Nb6 Be6 8. Na4 (8. Nd7 Bg8 9. Nc5) 8... Bg8 9. Nc5 Ke5 10. Nd3+) 7... Bg8 8. Nd3+ Ke4 9. Nc5+ Ke5 10. Nd3+ Ke4 11. Nc5+ Kd5 12. Nd3 Ke4 13. Nc5+ Kd4 14. Nd3 Ne5+ 15. Kxf5 Bh7+ 16. Kf6 Ng4+ 17. Kf7 h5 (17... Ke3 18. g8=Q Bxg8+ 19. Kxg8 h5 20. Ne1 Kxe2 21. Ng2 Kf3 22. Nh4+ Kg3 23. Ng6 Ne5 $1 (23... Ne3 24. Kg7 Kg4 25. Ne5+ Kf4 (25... Kg5 26. Nf3+ $11) 26. Kh6 h4 27. Ng6+ $11) 24. Nxe5 h4 25. Nc4 $1 h3 26. Ne3 $11) 18. g8=Q Bxg8+ 19. Kg6 $1 Bf7+ $1 20. Kxf7 Ke3 21. Ne1 h4 22. Ng2+ $11 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024.."] [Round ""] [White "A. Avni & M. Minski"] [Black "commendation"] [Result "1-0"] [SetUp "1"] [FEN "3q4/6p1/1kr3p1/8/8/2N1Pp2/4PBP1/5KQ1 w - - 0 1"] [PlyCount "13"] [EventDate "2024"] 1. Be1 (1. gxf3 $2 Rxc3 $11) (1. e4+ $2 Kb7 2. Bd4 fxg2+ 3. Kxg2 Qg5+ 4. Kf2 Qf4+ 5. Ke1 Rxc3 $1 6. Bxc3 Qc1+ 7. Kf2 $11) 1... f2 $1 { otherwise white will gradually win on material} 2. Qxf2 $1 (2. Kxf2 $2 { allows perpetual check}) 2... Rf6 3. Nd5+ $1 Qxd5 4. e4+ Qd4 $1 (4... Qc5 5. Qxf6+ gxf6 6. Bf2 Kc6 7. Bxc5 Kxc5 8. Kf2 Kd4 9. Kf3 $18) 5. e5 (5. Qxf6+ $4 Qxf6+ $19) 5... Rf5 $1 (5... Rf4 6. g3 Rf5 7. e4 $18) 6. e4 $1 { skips a sly trap:} (6. Qxf5 $2 gxf5 7. Bf2 Qc5 $3 (7... Qxf2+ $2 8. Kxf2 Kc5 9. Kf3 Kd5 10. Kf4 $18) 8. e6 Qxf2+ $11) (6. g4 $2 Rf4 $11) 6... Rxf2+ 7. Bxf2 $18
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Alexander Stavrieckiy"] [Black "commendation"] [Result "1-0"] [SetUp "1"] [FEN "1R6/k7/q1R1p3/1p6/1Pb3N1/2Ppp3/5PBp/5K2 w - - 0 1"] [PlyCount "13"] [EventDate "2024.."] 1. Ra8+ $1 (1. Rxa6+ $2 Kxb8 $11) 1... Kxa8 2. Rc8+ $3 (2. Rxa6+ $2 Kb8 3. Nxe3 $2 d2+ 4. Nxc4 d1=Q#) 2... Ka7 3. Ra8+ Kb6 4. Nxe3 d2+ 5. Nxc4+ Kc7 $1 (5... bxc4 6. Rxa6+ $18) 6. Ke2 (6. Nxd2 $2 Qd6 7. Ke2 Qe5+ 8. Ne4 Qh5+ $11) 6... Qxa8 7. Bxa8 $18 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Valery Kalashnikov"] [Black "special commendation"] [Result ""] [SetUp "1"] [FEN "2K5/8/8/8/k5p1/3r4/8/1R6 w - - 0 1"] [PlyCount "19"] [EventDate "2024"] 1. Kc7 g3 2. Kc6 Ka3 (2... g2 3. Kc5 Rg3 4. Rg1 $11) (2... Rd2 3. Kc5 g2 4. Kc4 $11) 3. Kc5 Ka2 {systematic move 2 figures} 4. Rg1 $1 (4. Re1 $2 Kb2 $1 5. Re2+ Kc1 $1 6. Kc4 Ra3 $1 7. Kd4 Kd1 8. Rg2 Ke1 9. Ke4 Kf1 $19) 4... Kb3 5. Rg2 Kc3 6. Ra2 $1 (6. Re2 $2 Rf3 7. Kd5 Kd3 8. Rg2 Rf5+ 9. Ke6 Rg5 10. Kf6 Rg8 11. Kf5 Ke3 $19) 6... Re3 7. Kd5 (7. Ra3+ $2 Kd2 8. Ra2+ Ke1 9. Kd4 Re2 10. Ra1+ Kf2 $19) 7... Kd3 8. Rb2 $1 ({Logic try} 8. Rg2 $2 Rf3 9. Ke5 Ke3 { ZZ White to move!} 10. Ra2 Rf1 11. Ra3+ Kf2 $19) 8... Rf3 9. Ke5 Ke3 { systematic move 4 figures} 10. Rg2 $1 $11 {ZZ Black to move!} *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Vladimir Kuzmichev"] [Black "special commendation"] [Result "1/2-1/2"] [SetUp "1"] [FEN "5B2/8/5p2/7K/8/8/8/1kr5 w - - 0 1"] [PlyCount "25"] [EventDate "2024.."] 1. Kg6 (1. Be7 $2 Rf1 (1... f5 $2 2. Kg5 Rf1 3. Bd6 Kc2 4. Bf4 $11) 2. Kg6 f5 3. Kg5 Kc2 4. Bd6 Kd3 5. Bf4 Ke4 $19) (1. Bg7 $2 f5 (1... Rf1 $2 2. Kg6 f5 3. Kf6 $1 f4 (3... Kc2 4. Ke5 $1 Kd3 5. Bh6 Rh1 6. Bg5 $11) 4. Kf5 $1 f3 5. Kf4 f2 6. Bd4 $1 $11) 2. Kg5 Rg1+ $19) 1... f5 (1... Rf1 2. Bg7 $11) 2. Kg5 (2. Bd6 $2 Rc6 $19) (2. Kxf5 $2 Rf1+ $19) 2... f4 $1 (2... Kc2 3. Bd6 Rf1 4. Bf4 $11) 3. Kg4 f3 (3... Rf1 4. Bd6 f3 5. Kf4 Kc2 (5... f2 6. Bc5 $11) 6. Ke3 $11) 4. Kg3 Kc2 5. Kf2 Kd3 6. Ba3 $1 (6. Bh6 $2 Rh1 7. Bf8 Rh5 $1 8. Bd6 (8. Kxf3 Rf5+ $19) 8... Ke4 $19) 6... Rc3 7. Bb4 Rc4 8. Ba5 Ke4 9. Bb6 Rc6 (9... Rc2+ 10. Kf1 $1 Rc6 (10... f2 11. Kg2 $1 $11 (11. Bxf2 $2 Kf3 $19)) 11. Ba7 Rc7 12. Bb6 Rb7 13. Bc5 Rb5 14. Ba7 Kf4 15. Bd4 Kg3 16. Bf2+ Kg4 17. Bd4 Rb4 18. Bc5 Rb1+ 19. Kf2 Rb2+ 20. Kf1 Kh3 21. Bd4 (21. Ba7 $2 Kg3 $19) (21. Be3 $2 Kg3 $19) 21... Rc2 22. Ba7 Kg3 (22... Kg4 23. Bd4 Kg3 24. Be5+ Kg4 25. Bd4 $11) 23. Bb8+ Kg4 24. Ba7 $11) 10. Ba7 Ra6 11. Bc5 Ra5 12. Bb6 Rb5 13. Ba7 $11 *
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[Event "Sergey Osintsev 64 JT"] [Site ""] [Date "2024"] [Round ""] [White "Rainer Staudte, Michael Schlosser"] [Black "special commendation"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/8/k4p1K/8/8/r7/7B w - - 0 1"] [PlyCount "43"] [EventDate "2024.."] 1. Bd5 (1. Kg5 $2 Rf2 2. Bb7 Kb6 $1 (2... Kb5 $2 3. Bc8 f4 4. Kf5 Kc4 5. Ke4 $11) 3. Bc8 f4 $19) 1... Rf2 (1... Rd2 2. Be6 f4 3. Kg4 $11) (1... Re2 2. Kg5 $11) 2. Kh4 Kb4 (2... Kb5 3. Kg3 Rf1 4. Kg2 Re1 5. Kf2 Re5 6. Bf7 Re7 7. Bh5 Rh7 8. Be8+ Kc4 9. Kf3 Rh4 10. Bd7 f4 11. Bg4 Kd4 12. Kxf4 $11) (2... Kb6 3. Kg3 Rf1 4. Bc4 {echo} Re1 5. Kf3 Kc5 6. Bd3 Kd4 7. Bxf5 $11) 3. Kg3 Rf1 4. Kg2 Re1 5. Kf2 Re5 6. Bf7 (6. Bg8 $2 Re8 7. Bf7 Rf8 8. Bh5 Rh8 $19) 6... Re7 (6... f4 7. Kf3 $11) 7. Bh5 Rh7 (7... Kc4 8. Kf3) 8. Be8 Rh8 (8... Re7 9. Bh5 $11) 9. Bd7 Rd8 (9... Rf8 10. Kf3 $11) 10. Be6 Rd6 (10... Re8 11. Bd7 $11) 11. Bc8 Rc6 (11... Rd8 12. Be6 $11) 12. Bd7 Rc7 13. Be6 Re7 14. Bc8 (14. Bg8 $2 Re8 $19) 14... Re8 15. Bd7 Rf8 16. Kf3 f4 17. Bg4 Kc3 18. Ke4 Kd2 19. Bh5 (19. Kf3 $2 Kd3 $19) 19... Ke1 20. Kf3 Rf6 21. Bg4 Kd2 22. Ke4 $11 *
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[Event ""] [Site ""] [Date "2024.07.08"] [Round ""] [White "Alexander Zhukov"] [Black ""] [Result "1-0"] [SetUp "1"] [FEN "1K6/8/3B2Rp/NP1k4/8/1p6/4Pq1P/8 w - - 0 1"] [PlyCount "17"] [EventDate "2024.."] 1. e4+ Kxe4 2. Nxb3 Qb6+ 3. Kc8 $1 (3. Ka8 $2 Kf5 $1 4. Rxh6 Qe3 $1 5. Rh5+ Kg6 $1 6. Re5 (6. Rc5) 6... Qxb3 $11) 3... Kf5 4. Re6 $3 (4. Rxh6 $2 Qe3 $1 5. Rh5+ Kg6 6. Re5 (6. Rc5) 6... Qxb3 $11) 4... Kxe6 (4... Kg4 5. Nc5 Qxb5 6. Rxh6 $18) 5. Bc5 $1 Qxb5 6. Nd4+ Kd5 7. Nxb5 Kxc5 8. Na3 $3 (8. Nc7 $2 Kd6 $1 9. Kd8 h5 $1 10. Ne8+ Ke5 $1 11. Ng7 h4 12. Ke7 Kf4 $11) (8. Nc3 $2 Kd4 $1 $11) 8... Kd4 9. Kd7 $18 *
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[Event "1.p Shakhmaty (Riga)"] [Site ""] [Date "1979"] [Round ""] [White "Matous=M"] [Black "(+4043.01e1h1)"] [Result "1-0"] [SetUp "1"] [FEN "8/qb6/8/2p5/2Q5/8/8/3BKn1k w - - 0 1"] [PlyCount "25"] [EventDate "1979.."] {Shakhmaty (Riga)=9 Shakhmaty (Riga)/5 (EG#05180).} 1. Kf2 $1 (1. Qxf1+ $2 Kh2) (1. Kxf1 $2 Ba6) (1. Qh4+ $2 Nh2) 1... Bg2 (1... Nh2 2. Bf3+ Nxf3 (2... Bxf3 3. Qc1+) 3. Qc1+) (1... Qa6 2. Bf3+) 2. Bf3 $1 Qg7 $1 (2... Bxf3 3. Qxf1+ Kh2 4. Qg1+ Kh3 5. Qg3#) 3. Qh4+ $1 (3. Qxf1+ $2 Kh2 4. Qg1+ Kh3 5. Bxg2+ Kh4 6. Qh2+ Kg5 7. Qg3+ Kf6) 3... Nh2 4. Qh8 $1 Qg6 (4... Qxh8 5. Bxg2#) 5. Qh7 $1 Qg5 ( 5... Qxh7 6. Bxg2#) 6. Qh6 $1 Qg8 (6... Qxh6 7. Bxg2#) 7. Qc1+ Nf1 8. Qxf1+ Kh2 9. Qg1+ Kh3 10. Bxg2+ Kh4 11. Qh2+ Kg5 12. Qg3+ Kf6 13. Qxg8 1-0
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[Event "Wege zu Schachstudien#175"] [Site ""] [Date "2006"] [Round ""] [White "Waelzel=H"] [Black "(=0410.01a6e6)"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/R7/K3k3/8/8/p5B1/4r3/8 b - - 0 1"] [PlyCount "12"] [EventDate "2006.."] {after Kovalenko=V a5h3 1972.} 1... Rb2 2. Rh7 (2. Be5 $2 Kxe5) 2... a2 3. Rh1 Rb1 4. Rh6+ Kf5 5. Rh5+ Kg4 6. Ra5 a1=Q 7. Be5 1/2-1/2
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[Event "Shakhmatnaya Skola"] [Site ""] [Date "2018.."] [Round ""] [White "Kuzmichev=V"] [Black "(=0001.11a7b5)"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/KN6/1P6/1k6/8/8/7p/8 w - - 0 1"] [PlyCount "26"] [EventDate "2018.."] 1. Na5 $1 (1. Nd6+ $2 Kc6 2. b7 h1=Q 3. b8=Q Qa1#) 1... h1=Q 2. b7 Qg1+ 3. Ka8 Qg2 4. Ka7 Qf2+ 5. Ka8 Qf3 6. Ka7 Qe3+ 7. Ka8 Qe4 8. Ka7 Qd4+ 9. Ka8 Qd5 10. Ka7 Qd7 11. Ka8 Kxa5 12. b8=Q Ka6 13. Qd6+ $1 Qxd6 1/2-1/2
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[Event "Roycroft JT EG"] [Site ""] [Date "1978.."] [Round ""] [White "Olimpiev=B"] [Black "(+0001.11d6d2) U2"] [Result "1-0"] [SetUp "1"] [FEN "8/8/3K2P1/8/8/1p6/3k3N/8 w - - 0 1"] [PlyCount "31"] [EventDate "1978.."] {EG=57 EG/7 1979 (EG#03824). U2: Pallier=A EG=170 10/2007.} 1. Nf3+ $1 (1. g7 $2 b2 2. g8=Q b1=Q 3. Nf3+ Ke3) (1. Nf1+ $2 Kc1 2. g7 b2 3. g8=Q b1=Q 4. Qg5+ Kb2 5. Qe5+ Ka3) 1... Kc3 (1... Ke3 2. Ne5 Kd4 3. Nd3 Kxd3 4. g7 b2 5. g8=Q b1=Q 6. Qg6+) (1... Kd1 2. Nd4 b2 3. Nb5 Kc2 (3... Kc1 4. Na3) (3... b1=Q 4. Nc3+) 4. g7 Kb3 5. g8=Q+) 2. g7 b2 3. g8=Q b1=Q 4. Qh8+ $1 (4. Qg7+ $2 Kc2 ( 4... Kb3 5. Nd2+) (4... Kd3 5. Qg6+) (4... Kb4 5. Qb7+) 5. Qg2+ Kc3 6. Qg7+ (6. Qd2+ Kb3 7. Nd4+ Kc4) 6... Kc2 7. Nd4+ Kc1 8. Qg5+ Kb2 (8... Kd1 9. Qg1+) 9. Qd2+ Ka1 10. Qa5+ Qa2) 4... Kc2 5. Qh2+ (5. Qc8+ $2 Kb2) (5. Qh7+ $2 Kb2) (5. Nd4+ $2 Kc1) 5... Kc3 $1 6. Qe5+ Kc2 (6... Kb4 7. Qc5+ Ka4 8. Qa7+) 7. Nd4+ (7. Qe2+ $2 Kc3 8. Qe5+ Kc2) 7... Kd2 (7... Kd1 {<main>} 8. Qe2+ Kc1 9. Qe3+ (9. Qe1+ $2 Kb2 10. Qb4+ Kc1 11. Qc3+ (11. Qc4+ Kd2 $1 (11... Kd1 12. Qf1+)) 11... Kd1 12. Qf3+ Kd2 13. Qe2+ (13. Qf4+ Kc3 14. Ne2+ Kb2 15. Qe5+ Ka3 16. Qa5+ Kb2) 13... Kc3 14. Nb5+ Kb4) (9. Kc5 $1 {<cook AP>} Qg6 10. Nb3+ Kb1 11. Nd2+ Kc1 12. Qe1+ Kc2 13. Qb1+) 9... Kb2 10. Qb3+ Ka1 11. Qa3+ (11. Nc2+ Qxc2 12. Qxc2) 11... Qa2 12. Nb3+ Kb1 13. Qc1#) (7... Kc3 8. Nb5+ Kd2 9. Qh2+ (9. Qf4+ $2 Ke1) 9... Ke3 (9... Kd1 10. Nc3+) (9... Kd3 10. Qh7+) 10. Qg3+ Kd2 (10... Ke2 11. Nc3+) (10... Ke4 11. Qg6+) 11. Qf2+ Kc1 12. Qe1+ Kb2 13. Qc3+ Ka2 14. Qa3#) 8. Qg5+ (8. Qe2+ $2 Kc3 9. Nb5+ Kb4) 8... Kc3 9. Nb5+ $1 Kb4 (9... Kb3 10. Qe3+ Kb4 11. Qc5+) 10. Qc5+ Kb3 (10... Ka5 11. Nc3+) 11. Qa3+ $1 (11. Qc3+ $2 Ka4 12. Qa3+ Kxb5 13. Qc5+ Ka4) 11... Kc4 (11... Kc2 12. Qc3+ Kd1 13. Qd4+ Kc1 14. Qe3+ Kb2 15. Qc3+ Ka2 16. Qa3#) 12. Qc3+ Kxb5 13. Qc6+ Ka5 14. Qa8+ Kb6 15. Qb8+ Ka5 16. Qxb1 1-0
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[Event "Sopra il Giuoco degli Scacchi"] [Site ""] [Date "1750"] [Round ""] [White "Del Rio=E"] [Black "(=0310.01f1g4)"] [Result "1/2-1/2"] [SetUp "1"] [FEN "8/8/8/2B5/6k1/5p2/r7/5K2 b - - 0 1"] [PlyCount "28"] [EventDate "1750.."] 1... Rc2 (1... f2 2. Kg2 $1 (2. Bxf2 $2 Kf3 $1 3. Bh4 Ra1+ 4. Be1 Rb1 5. Kg1 Rxe1+)) 2. Bd4 (2. Ba7 {<or>}) 2... Rc4 3. Ba7 Rb4 4. Bc5 $1 (4. Be3 $2 Rb1+ 5. Kf2 Rb2+ 6. Kf1 Kg3) (4. Bf2 $2 Rb1+ 5. Be1 Rxe1+ 6. Kxe1 Kg3) 4... Rb5 5. Bd4 $1 Kg3 6. Bf2+ Kf4 7. Bd4 $1 Ke4 8. Ba7 Ra5 9. Bb6 $1 Ra3 10. Bc5 Ra1+ 11. Kf2 Ra2+ 12. Kf1 Kf4 13. Bd6+ Kg4 14. Bc5 f2 15. Kg2 $1 1/2-1/2
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