[Event "Problemist of Ukraine"]
[Site ""]
[Date "2022"]
[Round "?"]
[White "169. Krug=P Garcia=M"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/8/8/3ppn2/R7/P6K/1P5N/3n3k w - - 0 1"]
[PlyCount "25"]
[EventDate "2021"]

1. Ng4 $1 (1. Rg4 $4 Nf2#) 1... e4 (1... Kg1 2. Ra8 e4 3. Rg8 $18) 2. Ra5 (2.
Ra8 $2 e3 $1 $11) 2... e3 3. Rxd5 e2 4. Rd2 $1 (4. Rxd1+ exd1=N $1 $11 ({not} 
4... exd1=Q $2 5. Nf2+ Kg1 6. Nxd1 Kf1 7. Kg4 $18)) 4... Ng3 $1 (4... e1=Q 5.
Rxd1 Qxd1 6. Nf2+ Kg1 7. Nxd1 $18) 5. Rxd1+ $1 exd1=N $1 6. Kxg3 $1 ({Try:} 6.
Nf2+ $2 Nxf2+ 7. Kxg3 Nd3 $1 (7... Nd1 $2 8. b3 $18) 8. b4 Ne5 9. a4 Nc6 10. b5
Na5 11. Kf4 (11. b6 Kg1 $1 12. Kf3 Kf1 13. Ke4 Nc4 14. b7 Nd6+ $11) 11... Nc4
12. Ke4 Nb6 {/b2} 13. a5 Nc4 14. a6 Nd6+ 15. Kd5 Nxb5 16. Kc6 Na7+ 17. Kb6 Nc8+
18. Kb7 Nd6+ {positional draw.}) 6... Nxb2 7. Kf3 $1 (7. Ne5 $2 Na4 8. Nc4 Kg1
$1 $11) (7. Kf2 $2 Na4 $1 {zz} 8. Kf3 Kg1 9. Ke3 Kg2 10. Ne5 Kg3 11. Kd4 Kf4
$11) 7... Na4 (7... Kg1 8. Ne5 Kf1 9. Ke3 Ke1 10. Nd3+ $18) 8. Nf2+ $1 (8. Ke3
$2 Kg2 9. Ne5 Kg3 10. Nd7 Kg4 (10... Nb2 $2 11. Nb6 Kg4 12. Kd2 Kf5 13. Kc2 $18
) 11. Kd3 Kf5 $13) 8... Kg1 (8... Kh2 9. Nd1 $1 Kg1 10. Ke2 {/e3} Kg2 11. Kd3
Kf3 12. Kc4 $18) 9. Ke2 Kg2 10. Nd1 Kg3 (10... Nc5 11. Ke3 Kg3 12. Kd4 Nb3+ 13.
Kc4 Na5+ 14. Kb5 Nb3 15. Kb4 Nd4 16. Kc4 $18) 11. Kd3 $1 (11. Ke3 $2 Kg4 12.
Kd4 Kf5 13. Kd5 Nb6+ 14. Kc6 Nc4 $11) 11... Kf4 12. Kc4 Ke5 (12... Nb6+ 13. Kc5
Nd7+ 14. Kc6 Nb8+ 15. Kd5 Nd7 16. Nb2 Ke3 17. Kd6 Nb6 18. Kc6 Nc8 19. Kc5 $18)
13. Kb5 $1 {domination.} 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "170. Basisty=M Frolkin=A Tkach"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "2N2R2/2q4p/2B5/2p5/2k2p2/8/2K2P2/8 w - - 0 1"]
[PlyCount "29"]
[EventDate "2022"]

1. Rf7 $1 Qxc6 (1... Qxc8 2. Rxf4#) (1... Qxf7 2. Nd6+) 2. Rxf4+ Kd5 3. Ne7+
Ke5 4. Rf5+ $1 Ke6 5. Nxc6 Kxf5 6. Kd3 Kf4 7. Ke2 h5 8. Ne7 $1 c4 (8... h4 9.
Ng6+ Kg5 10. Ne5 $18) 9. Nd5+ Ke5 10. Nc3 Kf4 11. f3 $1 Kg3 12. Ne4+ Kf4 13.
Kf2 h4 14. Nc3 h3 15. Ne2+ $18 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "171. Ryabtsev=V Gorbunov=V"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "N2k4/K1p3r1/3BP2p/n3N2P/7P/1r1p4/4q3/2Q5 w - - 0 1"]
[PlyCount "16"]
[EventDate "2022"]

1. Nf7+ $1 (1. e7+ $2 Rxe7 2. Bxe7+ Kxe7 3. Qc5+ Kf6 4. Nd7+ Ke6 $19) 1... Rxf7
2. Bxc7+ Kc8 (2... Ke7 3. Qc5+ Ke8 (3... Kf6 4. Qd4+) 4. exf7+ Kxf7 5. Qf5+ ({
or} 5. Bxa5 Qe7+ 6. Qxe7+ Kxe7 7. Bd2 $11)) (2... Ke8 3. exf7+ Kxf7 4. Qf4+ Kg8
5. Qg3+ Kf8 6. Qf4+ Kg8 (6... Ke7 7. Qd6+ ({or} 7. Bxa5 $11)) 7. Qg3+ {
perpetual check.}) 3. Nb6+ $1 (3. exf7 $2 Rb7+ 4. Ka6 d2+ 5. Kxa5 Qb5#) 3...
Rxb6 4. exf7 Ra6+ (4... Rf6 5. Be5+ $1 (5. Bxa5+ $2 Qc2) 5... Nc6+ 6. Qxc6+
Rxc6 7. f8=Q+ Kd7 8. Qf7+ Kd8 9. Qf8+ {perpetual check.}) 5. Kxa6 d2+ 6. Kxa5
dxc1=Q (6... dxc1=R 7. f8=Q+ Kxc7 8. Qf4+ Kb7 9. Qxc1 $11) 7. f8=Q+ Kxc7 (7...
Kb7 8. Qb4+ $1 (8. Qb8+ Kc6 9. Qb6+ Kd5 $19) 8... Kc6 9. Qd6+) 8. Qf4+ $1 Qxf4
{stalemate.} 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "172. Boreisho=V"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "1q6/1pkP1p2/1p1p3p/1P2p3/3R1N1P/4P2K/4P3/8 w - - 0 1"]
[PlyCount "19"]
[EventDate "2022"]

1. Nd5+ Kxd7 2. Ra4 Qh8 3. Ra8 Qg7 (3... Qxa8 4. Nxb6+ Ke6 5. Nxa8 $18) 4. Rg8
Qxg8 5. Nf6+ Ke6 6. Nxg8 h5 7. e4 f5 8. exf5+ Kf7 9. Nh6+ Kg7 10. Ng4 $18 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "173. Hlinka=M Kekely=L"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/5B2/8/1K6/3k3P/1P4p1/2P5/8 w - - 0 1"]
[PlyCount "19"]
[EventDate "2022"]

1. c3+ (1. h5 $2 g2 2. h6 g1=Q 3. h7 Qg5+ $19) 1... Ke5 (1... Kxc3 2. Bd5 $18)
2. h5 g2 3. h6 g1=Q 4. h7 Qh2 (4... Qg7 5. Bg8 Ke4 6. Kc4 Qc7+ 7. Kb4 Qb6+ 8.
Kc4 Qc6+ 9. Kb4 Qf6 10. Kc4 Ke3 11. b4 Kd2 12. b5 Qxc3+ 13. Kd5 $11) (4... Qh1
5. Bg8 $1 (5. Bg6 $2 Qb7+ 6. Kc4 Qc8+ 7. Kd3 Qh3+ 8. Kd2 Kf4 9. b4 Qg2+ 10. Kc1
Qh2 11. b5 Ke3 12. b6 Qd2+ 13. Kb1 Qxc3 $19) 5... Kd6 6. Kb4 $1 ({Thematic try
} 6. Kc4 $2 Qe4+ 7. Kb5 Qc6+ 8. Kb4 Qc5+ 9. Ka4 Qxc3 $19) (6. Ka5 $2 Kc7 7. c4
Qh5+ 8. Kb4 Kb6 9. Bd5 Qh4 $19) 6... Qb7+ (6... Qe4+ 7. Ka3 $11) (6... Qh3 7.
Kc4 $11) 7. Ka3 (7. Kc4 Qd5+) 7... Qa7+ (7... Qg7 8. Kb2 Qe5 9. b4 $11) 8. Kb2
(8. Kb4 $2 Qc5+ $19) 8... Qf2+ 9. Ka3 Qc5+ 10. Kb2 Qe5 11. b4 {draw.} (11. Kc2
$2 Qe2+ 12. Kc1 Qh2 $19)) 5. Bg8 Kd6 6. Kc4 ({Thematic try} 6. Kb4 $2 Qe5 7. c4
Kc6 8. Ka3 Qa1+ 9. Kb4 Kb6 10. c5+ Kc6) (6. b4 $2 Qe2+ 7. c4 Qh2 8. c5+ Kd7 9.
Kc4 Qc2+ 10. Kd4 Kc6 11. Bd5+ Kb5 12. Be4 Qd2+ 13. Ke5 Qxb4 $19) 6... Qe2+ 7.
Kd4 Qd2+ 8. Kc4 Qe2+ 9. Kd4 Qe5+ 10. Kd3 {draw.} (10. Kc4 $2 Qe4+ {as after 6.
Kc4?}) 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "174. Hlinka=M Kekely=L"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "k2n4/P3N3/p2P4/1p1K3N/8/1p6/4bpB1/8 w - - 0 1"]
[PlyCount "33"]
[EventDate "2021"]

1. Ng3 $1 (1. Kd4+ $2 Kxa7 2. Ng3 b2 3. Be4 f1=Q 4. Nxf1 Bxf1 5. Kc3 Kb6 6.
Kxb2 Bh3 7. Nf5 Bxf5 8. Bxf5 Nf7 9. d7 Kc7 10. Kb3 Ne5 11. Kb4 Nxd7 12. Ka5 Nc5
$19) 1... b2 2. Nc8 (2. Kd4+ $2 Kxa7 3. Be4 f1=Q {as after 1.Kd4+?}) 2... f1=Q
(2... Nb7 3. Kc6 $1 f1=Q (3... b1=Q $2 4. Kb6 $18) 4. Nxf1 Bxf1 5. Kc7 $1 Bxg2
6. Nb6+ Kxa7 7. Nc8+ Ka8 8. Nb6+ {perpetual check}) 3. Nxf1 Bxf1 4. Be4 $1 ({
Try} 4. Bf3 $2 Be2 $1 5. Be4 Bf3 6. Bxf3 b1=Q 7. Kc5+ Nb7+ 8. Kb6 Qg1+ 9. Kc7
Qg7+ 10. Ne7 Qc3+ 11. Bc6 Qa5+ 12. Kc8 Qd8#) 4... Bg2 $1 5. Bxg2 b1=Q 6. Kc5+
Nb7+ 7. Kb6 Qg1+ (7... Qh7 $2 8. Kxa6 $18) 8. Kc7 {now Qg7+ is unpossible} (8.
Kxa6 $2 Qa1+ 9. Kb6 Qa5+ 10. Kc6 Qc3+ 11. Kd7 Qg7+ $19) 8... Qc5+ (8... Qxg2 9.
Nb6+ Kxa7 10. Nc8+ {perp. check}) 9. Bc6 a5 (9... b4 10. Nb6+ Kxa7 11. Nc8+ {
perp. check}) 10. d7 Qe5+ (10... b4 11. d8=Q Qxc6+ 12. Kxc6 Nxd8+ 13. Kb5 $11)
11. Kb6 Qf6 12. Kxb5 $1 a4 13. Bxb7+ $1 Kxb7 14. Kxa4 {positional draw, or}
Qd4+ 15. Kb3 {(Ka3)} Qxd7 16. a8=Q+ $1 Kxa8 17. Nb6+ {fork.} 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "175. Mironenko=M Samilo=V"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/B7/6p1/R7/6pk/2p5/2Ppr1PP/7K w - - 0 1"]
[PlyCount "17"]
[EventDate "2022"]

1. g3+ Kh3 2. Ra1 (2. Rd5 $2 Rxh2+ (2... Re1+ 3. Bg1 $11) 3. Kg1 Re2 $19) 2...
Rxh2+ (2... Re1+ 3. Bg1 d1=Q 4. Rxd1 Rxd1 {stalemate.}) 3. Kg1 Rg2+ 4. Kf1 Kxg3
5. Bd4 $1 (5. Bb8+ $2 Kh3 6. Be5 g3 7. Bxc3 Rf2+ $19) 5... Kh2 (5... d1=Q+ 6.
Rxd1 Rxc2 7. Be5+) 6. Bxc3 g3 7. Bd4 d1=Q+ 8. Rxd1 Rxc2 9. Be5 $11 (9. Ke1 $2
g2 10. Be5+ Kh1 $19) 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "176. Rudenko=T Samilo=V Tarasiuk=V"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/8/BpR5/5N2/5p2/1P4p1/p2K1p2/6bk w - - 0 1"]
[PlyCount "21"]
[EventDate "2022"]

1. Rc1 (1. Bb7 $2 g2 (1... f1=N+ $2 2. Kd3 g2 3. Rc1 Kh2 4. Bxg2 Kxg2 5. Nh4+
Kf2 6. Ra1 Bh2 7. Rxa2+ $18) 2. Rc1 Kh2 3. Bxg2 Kxg2 4. Nh4+ Kg3 $11) (1. Rh6+
$2 Bh2 2. Bb7+ g2 3. Bxg2+ Kxg2 4. Nh4+ Kh3 $11) 1... g2 2. Bf1 (2. Bb7 $2 Kh2
3. Bxg2 Kxg2 4. Nh4+ Kg3 5. Ke2 Kxh4 $11) (2. Kc2 $2 Kh2 $1 3. Nh4 f1=Q 4. Bxf1
gxf1=Q 5. Rxf1 Bd4 6. Nf3+ Kg2 7. Nxd4 Kxf1 8. Kb2 Kf2 $11) 2... gxf1=Q 3. Rxf1
Kg2 4. Ke2 f3+ (4... a1=Q 5. Nh4+ Kg3 6. Rxa1 $18) 5. Kd2 Bh2 (5... Kxf1 6.
Ne3#) 6. Ne3+ Kh3 7. Rh1 (7. Ra1 $2 Be5 8. Rxa2 Bd4 9. Nf1 Kg2 $11) 7... b5 $1
(7... f1=Q 8. Rxf1 Be5 9. Rxf3+ Kh4 10. Nc2 $18) (7... Kg3 8. Ra1 $18) 8. Kd3
$1 (8. Kc2 $2 f1=Q 9. Rxf1 Be5 $11) 8... f1=Q+ 9. Rxf1 Be5 10. Rxf3+ (10. Nc2
$2 Kg2 $1) 10... Kh4 11. Nc2 $18 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "177. Pasman=M"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "B3k3/8/1RP5/1n1r1r2/1K6/3PP3/8/8 w - - 0 1"]
[PlyCount "17"]
[EventDate "2022"]

{Looks that white has to look for a way for a fork with e4...} 1. c7 $1 ({Not} 
1. e4 Rd4+ $1) 1... Nxc7 2. Bc6+ $1 (2. Bxd5 Nxd5+ {Black fork}) (2. Rb8+ Rd8)
2... Kf8 (2... Ke7 3. Rb7) 3. Rb8+ ({Thematic try :} 3. e4 {fork} Rf4 $1 4.
Rb8+ Ke7 5. Rb7 Rd8 $1 6. Kc5 (6. Rxc7+ Kd6 {double attack}) 6... Rc8 $1 7. Kb6
Kd8 $1 $19) 3... Ke7 4. Rb7 $1 (4. Bxd5 Na6+ $1 {Black fork with the knight})
4... Rc5 $1 5. e4 $1 (5. Rxc7+ Kd6 6. Rc8 Rxc6 $19) 5... Rh5 (5... Rg5 {
is the same} 6. Rxc7+ Kd6 7. e5+ $1 Rgxe5 (7... Kxc7 8. Kxc5) (7... Rcxe5 8.
Rc8) 8. d4 {as main}) 6. Rxc7+ Kd6 7. e5+ $3 Rhxe5 (7... Rcxe5 8. Rc8 $11) 8.
d4 $1 {Now comes the fork with d-pawn} Kxc7 (8... Re4 9. Bxe4 $11) (8... Rxc6
9. Rxc6+) 9. Ba4 $1 {While thematic try is the fork with e-pawn to black d5
and f5 rooks, the real solution and main line is with rooks moved one file to
left and fork with d-pawn} 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "178. Minski=M"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "2b3r1/P4Q2/8/8/7r/8/pqP1N1N1/2b2K1k w - - 0 1"]
[PlyCount "37"]
[EventDate "2022"]

1. Qf2 {(threatens 2.Qg1# and 2.Qxh4+)} Qd4 $1 2. Nxd4 Ba6+ 3. c4 $3 ({logical
try} 3. Ne2 $2 Bxe2+ 4. Kxe2 Re4+ 5. Ne3 $1 Rxe3+ 6. Kf1 Re1+ $1 7. Qxe1 Rg1+
8. Kf2 Be3+ $3 {the point} 9. Qxe3 Rg2+ 10. Kf3 a1=Q 11. Qh6+ Rh2 (11... Kg1 $2
12. Qe3+ Kh2 13. Qh6+ Kg1 14. Qe3+ Kh1 15. Qh6+) 12. Qc6 Qxa7 13. Kg3+ Kg1 $19
{position X}) 3... Bxc4+ 4. Ne2 Bxe2+ 5. Kxe2 Re4+ (5... a1=Q 6. Qxh4+ Kxg2 7.
Qf2+ $11) 6. Ne3 $1 (6. Kf1 $2 Be3 $1 7. Qf3 Kh2 $1 8. Qxe4 (8. Qh5+ Kg3 $19)
8... a1=Q+ $19) 6... Rxe3+ 7. Kf1 Re1+ $1 8. Qxe1 Rg1+ 9. Kf2 Be3+ $1 10. Qxe3
(10. Kf3 $2 Rxe1 11. a8=Q a1=Q $19) 10... Rg2+ 11. Kf3 a1=Q 12. Qh6+ Rh2 13.
Qc6 $1 Qf1+ ({compare with the logical try:} 13... Qxa7 $4 14. Kg3+ Kg1 {
position X without the wPc2} 15. Qc1#) 14. Ke3+ Kg1 15. a8=Q Qe2+ (15... Qf2+
16. Kd3 Rh3+ 17. Kc4 $11) 16. Kd4 Qd2+ 17. Kc4 (17. Kc5 $2 Qe3+ $19) 17... Rh4+
18. Qe4 (18. Kc5 $2 Qb4+ $19) (18. Kb5 $2 Rb4+ $19) 18... Qc2+ 19. Kd4 $11
1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "179. Hlinka=M Kekely=L"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "2b5/2p5/q4P2/6p1/5k2/1B2R2R/1b4K1/8 w - - 0 1"]
[PlyCount "29"]
[EventDate "2021"]

1. Rhf3+ Kg4 2. f7 Bg7 3. f8=Q Bxf8 4. Rxf8 Bb7+ 5. Kf2 Qd6 {against Bd1+} (
5... Qa1 6. Be6+ Kh5 7. Rh8+ Kg6 8. Rg8+ Kf6 9. Rf8+ Ke7 10. Rf7+ Kd6 11. Rd7+
Kc6 12. Rd2 Ba6 13. Bd5+ Kc5 14. Bg2 Bc4 15. Rd7 $11) 6. Be6+ Kh5 7. Rh3+ Kg6
8. Rg8+ Kf6 9. Rh6+ Ke5 10. Rxg5+ Kd4 11. Rg4+ Be4 (11... Kc5 12. Rc4+ Kb6 13.
Rch4 Qd2+ 14. Kg3 Qe3+ 15. Kg4 Bf3+ 16. Kf5 $11) (11... Kc3 12. Rc4+ Kb2 ({or} 
12... Kd2) 13. Rc2+ $1 Kxc2 14. Bf5+ Kc3 15. Rxd6 $11) 12. Rxe4+ $1 Kxe4 13.
Bf5+ Kxf5 14. Rxd6 cxd6 15. Kf3 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "180. Hlinka=M Kekely=L"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/5p2/8/2n5/8/8/2P1PP2/4K1k1 w - - 0 1"]
[PlyCount "21"]
[EventDate "2022"]

1. e4 $1 Kg2 2. Ke2 Nxe4 3. Ke3 Nd6 (3... Nxf2 4. Kf4 $1 $11) 4. Kf4 $1 (4. c3
$2 Kh3 5. Kf4 Kh4 6. Ke5 Ne8 7. Kf5 Kh5 8. c4 Kh6 9. c5 Kg7 $19) 4... Kxf2 5.
Ke5 Ne8 6. c4 Ke3 (6... Kg3 7. Kf5 Kh4 8. c5 Kh5 9. c6 $11) 7. c5 f6+ 8. Kf5 $1
(8. Ke6 $2 Ke4 $19) 8... Kd4 9. c6 Kd5 10. c7 Nxc7 11. Kxf6 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "181. Nielsen=S Minski=M"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "3R4/R2P1p2/1k3p2/1n3K2/8/3r4/3p2b1/3B1N2 w - - 0 1"]
[PlyCount "17"]
[EventDate "2022"]

1. Ra2 $1 (1. Rb8+ $2 Kxa7 $11) 1... Kc7 (1... Bxf1 2. Rb8+ Kc7 3. Rxb5 $18) 2.
Rf8 $3 ({logical try:} 2. Rg8 $2 Bxf1 3. d8=Q+ Rxd8 4. Rc2+ Kd7 5. Rxd2+ Bd3+
6. Rxd3+ Nd6+ 7. Rxd6+ Ke7 8. Ba4 Rxg8 $11) ({logical try:} 2. Rh8 $2 Bxf1 3.
d8=Q+ Rxd8 4. Rc2+ Kd7 5. Rxd2+ Bd3+ 6. Rxd3+ Nd6+ 7. Rxd6+ Ke7 8. Ba4 Rxh8 $11
) 2... Bxf1 (2... Kxd7 3. Rxf7+ $18) 3. d8=Q+ (3. Rc2+ $2 Kxd7 $11) 3... Rxd8
4. Rc2+ Kd7 5. Rxd2+ Bd3+ $1 {play for stalemate} 6. Rxd3+ Nd6+ 7. Rxd6+ Ke7 $1
8. Ba4 $1 (8. Rdxd8 $2 {stalemate}) (8. Rfxd8 $2 {stalemate}) 8... Rxf8 (8...
Rxd6 9. Re8#) 9. Rd7+ $18 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "182. Trakhtman=E"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/6PP/4N3/1Pp2kp1/Rb6/1p2n1p1/1P2P1Pp/Q4BRK b - - 0 1"]
[PlyCount "22"]

1... Ng4 2. Qe1 $1 (2. Qb1+ $2 Ke5 3. Qe4+ Kxe4 4. Nxc5+ Ke3 5. Ne4 Nf2+ 6.
Nxf2 Kxf2 7. g8=Q hxg1=Q#) 2... Bxe1 3. Rxg4 Bf2 4. e4+ (4. Rxg5+ $2 Kf6 $1 5.
g8=N+ Kxe6 6. Rg6+ Kd7 7. Nf6+ Ke7 (7... Kc7 $2 8. Rg7+ Kb6 9. Nd5+ Ka5 10.
Ra7+ Kxb5 11. e4+) 8. Nd5+ Kd7 9. Rg7+ Kd6 10. Rg6+ Kd7 11. Nb6+ Kc7 12. Nd5+
Kd7 $11) 4... Ke5 (4... Kxg4 5. Be2+) 5. Rxg5+ Kd6 6. Rd5+ Ke7 7. g8=N+ Kxe6 8.
Re5+ Kd6 9. Re6+ Kc7 (9... Kd7 10. Nf6+ Kxe6 11. Bc4+) 10. b6+ Kb8 11. Re8+ Kb7
12. Ba6+ $18 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "183. Trakhtman=E"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "kqB1N3/p3b1r1/PPp1P3/8/2n5/3r4/3P3P/5K2 w - - 0 1"]
[PlyCount "15"]

1. Nc7+ Qxc7 2. bxc7 Nxd2+ ({Main B:} 2... Ne3+ 3. Ke2 $1 (3. dxe3 $2 Rd1+ 4.
Ke2 Re1+ 5. Kd3 Rxe3+ 6. Kd2 Bb4+) 3... Rxd2+ 4. Kf3 Rf2+ 5. Ke4 Rf4+ 6. Kd3
Rd4+ 7. Ke2 Rd2+ 8. Kf3 $11) 3. Ke2 Re3+ 4. Kd1 Re1+ 5. Kc2 (5. Kxe1 $2 Bh4+ 6.
Kd1 Rxc7) 5... Rc1+ 6. Kd3 Rc3+ 7. Ke2 Re3+ 8. Kd1 $11 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "184. Chernyavsky=M Tarasiuk=V"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "K7/p6p/1P6/N4p2/6b1/8/2B1k3/7r w - - 0 1"]
[PlyCount "21"]

1. b7 $1 (1. bxa7 $2 Bf3+ 2. Kb8 Rh6 3. Ba4 f4 $19) 1... Bf3 2. Bxf5 Rh5 3. Bg4
$1 (3. Kxa7 $2 Bxb7 4. Bg4+ Bf3 5. Bxh5 Bxh5 $19) 3... Rb5 4. Nc6 $1 (4. Bxf3+
$2 Kxf3 5. Nc6 Ke4 $1 6. Kxa7 h5 $19) 4... Rxb7 (4... Bxg4 5. Nd4+ Kf2 6. Nxb5
Bf3 7. Kxa7 Bxb7 8. Kxb7 h5 9. Nd6 $1 h4 10. Ne4+ Kg2 11. Ng5 $11) 5. Bxf3+
Kxf3 6. Kxb7 h5 7. Kxa7 ({or} 7. Ka6) 7... Ke4 $1 (7... h4 8. Ne5+ Kg3 9. Nc4
Kf2 10. Ne5 h3 11. Ng4+ Kg3 12. Ne3 $11) 8. Na5 $1 {(Grigoriev 1932)} h4 9. Nc4
h3 10. Nd2+ Kf4 11. Nf1 $11 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "XXX. Rudenko=T Samilo=V Tarasiuk=V"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "3K4/bp6/p1pN3p/8/pk6/8/pPB1P3/4N3 w - - 0 1"]
[PlyCount "21"]
[EventDate "2022"]

{Dedicated to Igor Yarmonov (Mariupol).} 1. Nd3+ Ka5 2. Kc7 Bb8+ $1 (2... a1=Q 3. Nxb7+ Kb5 4. Nd6+ Ka5 5. Kxc6 Qa2 6. Nb7#) 3. Kxb8 a1=Q 4. Bb1 $1 ( {Try:} 4. Nc4+ $2 Kb5 5. Na3+ Kb6 $1 (5... Ka5 $2 6. Bb1 $1 Kb6 7. Ne1 $1 {see main line} ) 6. Nc4+ Kb5 7. Nd6+ Kb6 $1 {positional draw.}) 4... Kb6 $1 (4... Qxb1 5. Nc4+ Kb5 6. Na3+ {(fork)} Kb6 7. Nxb1 $18) 5. Nc4+ Kb5 6. Na3+ Kb6 7. Ne1 $1 (7. Ne5 $2 Kc5 8. e4 Kd6 $11) 7... Kc5 8. e4 $3 (8. Nec2 $2 Qxb2 $19) 8... Kd6 (8... h5 9. Kc7 $1 h4 10. Nd3+ Kd4 11. Nc2+ {(fork)} Kxd3 12. Nxa1+ $18) (8... b5 9. Kc7 $1 Qxb2 10. Nd3+ {(fork)} Kd4 11. Nxb2 $18) 9. Nec2 Qxb2 10. Nc4+ {(fork)} Kc5 11. Nxb2 {win.} 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "185. Maly=I"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "3k4/n7/8/2K5/4P3/2b1P3/6R1/8 w - - 0 1"]
[PlyCount "21"]
[EventDate "2022"]

1. Kc4 $1 (1. Kd5 $2 Kd7 $11) 1... Be1 (1... Ba5 2. Rg8+ Kc7 3. Rg7+ $18) 2.
Kd5 $1 (2. Rg8+ $2 Kc7 3. Rg7+ Kb6 4. e5 (4. Kd5 Bf2) 4... Nc6 5. e6 Bh4 6. Kd5
Ne7+ 7. Ke5 Kc5 8. Rh7 Bg5 9. e4 Nc6+ 10. Kf5 Be7 $11) (2. Rb2 $2 Nc6 3. Kd5
Ne5 4. Ke6 (4. Rb1 Nf3 5. Ke6 Bf2 6. Rf1 Ng5+ 7. Kf5 Bxe3 $11) 4... Nd7 5. Rb1
Bd2 6. Rd1 Nc5+ 7. Ke5 Nb3 $11) 2... Nb5 3. Ke6 Nc7+ 4. Kf7 (4. Kd6 $2 Bb4+)
4... Kd7 (4... Bc3 5. Rg1 $1 $18) 5. Rg1 $1 Bf2 6. Rd1+ Kc6 7. Rd3 Bg3 8. Kf6
Ne8+ 9. Ke6 $1 Nd6 10. Rc3+ Kb5 11. Kd5 $1 $18 (11. e5 $2 Nc4 12. e4 Bh2 13.
Kf5 Kb4 $11) 1-0

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "186. Topko=L"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "2B5/8/8/6N1/8/1p2K3/p7/5k2 w - - 0 1"]
[PlyCount "15"]
[EventDate "2022"]

1. Bh3+ Ke1 (1... Kg1 2. Nf3+ Kh1 3. Kf2 a1=Q 4. Bg2#) 2. Bg4 ({Дуаль} 2.
Nf3+ $1 Kd1 3. Nd4 b2 (3... a1=Q 4. Bg4+ Ke1 5. Nf3+) 4. Bg4+ Kc1 5. Ne2+ Kc2
6. Bf5+ Kb3 7. Be6+ Ka3 8. Bxa2 $11) 2... Kf1 3. Bh3+ Ke1 4. Bg4 a1=Q 5. Nf3+
Kd1 6. Nd4+ Ke1 7. Nf3+ Kd1 8. Nd4+ $11 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "187. Sprenger=J"]
[Black "?"]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "5k2/8/1K2b1r1/1P2p3/1P6/8/3N4/6N1 w - - 0 1"]
[PlyCount "35"]
[EventDate "2022"]

{Themes: 11th WCCT theme - sacrifice in solution and try; reciprocal change of
solution and try in the two main lines} 1. Ngf3 e4 $1 2. Ne5 (2. Nxe4 $4 Bd5+
$19 {/Bf5+}) (2. Nd4 $2 e3 3. N2f3 Bg4+ 4. Kc5 Ke7 $19 {Even without engine it
is clear that Black can always reach the won endgame RB vs. NN. Probably he
will also win faster.}) 2... Rh6 3. Nxe4 $1 {Otherwise Black plays e4-e3,
winning like in the line 2. Nd4. Now Black has to decide how to fire from the
battery:} Bf5+ $1 {Main B. Prevents the tactic 3. ...Bd5+ 4. Nf6!, but now the
bishop does not control the square b7.} (3... Bd5+ {Main A. Here the bishop is
in the range of the white king and so White can play} 4. Nf6 $1 {11th WCCT
theme} ({logical try} 4. Nd6 $2 Rxd6+ 5. Kc5 {no threat Kxd5} Ke7 $1 $19 (5...
Rd8 $2 6. Nc6 $1 Rd7 7. Ne5 $10)) 4... Rxf6+ 5. Kc5 $1 {with the double threat
Nd7+ and Kxd5, forcing the bishop to leave the long diagonal.} Be6 6. b6 Bc8 7.
b7 {/Nd7+ followed by b6-b7 also works} Bxb7 8. Nd7+ Ke7 9. Nxf6 $10) 4. Nd6 $3
{11th WCCT theme. Only this sacrifice keeps the black king out of play.} ({
logical try} 4. Nf6 $2 Ke7 $1 {/or Kg7 with transposition} (4... Rxf6+ $2 5.
Kc7 Rh6 6. Nc6 {transposes to the main line}) 5. Kc7 Kxf6 6. Nc6 Rh7+ 7. Kb8
Bd7 $1 8. Nd4 {position X with bKf6} Ke5 $1 9. b6 Kxd4 $19) ({try} 4. Kc7 $2
Bxe4 {is hopeless for White: the bishop stands on the right diagonal and the
rook is not threatened.} 5. Nc4 Rh7+ $1 $19) 4... Rxd6+ 5. Kc7 Rh6 (5... Rd5 6.
b6 $1 Rxe5 7. b7 Re7+ 8. Kb6 $1 $10) 6. Nc6 $1 ({try} 6. b6 Rh7+ $1 7. Kb8 Be4
8. Nc4 Rb7+ $1 9. Kc8 {eg} Ke7 $19) 6... Rh7+ 7. Kb8 Bd7 $1 (7... Be4 $6 8. Na5
$1 {allows White to reach his ideal piece configuration and transposes into
the solution after} Ke7 9. b6 Kd6 10. b7) 8. Nd4 {position X with bKf8} Ke7 9.
b6 Kd6 10. b7 Bh3 $1 {Preparing Bg2.} ({After the straightforward} 10... Bc6 {
Black liquidates the pawn, but White escapes into stalemate:} 11. Nxc6 Kxc6 12.
b5+ $1 Kb6 13. Ka8 Rxb7 $10) 11. Nb3 $1 {The knight is finally heading for the
ideal square a5.} Bg2 12. Na5 Be4 13. b5 (13. Ka7 $2 Bxb7 14. Nxb7+ Kc6 15. b5+
Kxb5 16. Kb8 Kc6 $1 17. Nd8+ Kd7 18. Nb7 Rh5 $19 {with a well-known
theoretical win}) 13... Bd5 14. Ka7 Kc5 15. Ka6 Rh8 16. Nb3+ $1 {The bishop
needs to be decoyed away from the long diagonal.} (16. Ka7 $2 Bxb7 $1 17. Kxb7
Kxb5 18. Nc6 Rh7+ $19) 16... Bxb3 17. Ka7 Rh7 18. Ka6 $1 1/2-1/2

[Event "Problemist of Ukraine"]
[Site "?"]
[Date "2022"]
[Round "?"]
[White "188. Boreisho=V Borodavkin=S"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "4K3/2RNp2k/1p6/4p3/8/2P5/7p/8 w - - 0 1"]
[PlyCount "37"]
[EventDate "2022"]

1. Nf8+ Kg8 2. Rc4 e4 $1 ({main B} 2... h1=Q 3. Rg4+ Kh8 4. Rh4+ Qxh4 5. Ng6+
Kg7 6. Nxh4 Kf6 7. Kd7 Kg5 8. Ng2 Kg4 9. Ne1 $1 Kf4 10. Kc6 Ke3 11. Kxb6 Kd2
12. c4 Kxe1 13. c5 $18) 3. Rxe4 h1=Q 4. Rg4+ Kh8 5. Rh4+ Qxh4 6. Ng6+ Kg7 7.
Nxh4 Kf6 8. Kd7 Ke5 9. Kc6 Ke4 10. Kb5 ({or} 10. c4 Kd3 11. Kb5) 10... Kd3 11.
c4 (11. Kb4 $2 e5 $11) 11... e5 12. Nf3 {/Ng6} e4 13. Ne5+ Kc3 $1 (13... Kd4
14. Ng4 {zz}) 14. Kxb6 (14. Ng4 $2 Kd4 $1 $11 {zz}) 14... Kd4 15. c5 Kxe5 16.
c6 e3 17. c7 e2 18. c8=Q e1=Q 19. Qe8+ $18 1-0

