
[Event "1.p Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Pasman=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "8/p4PN1/6PK/8/2r5/8/6Pp/7k w - - 0 1"]
[PlyCount "17"]
[EventDate "2021"]

1. Nh5 $3 ({Logical try (see comments to 2-nd move of black for twin position
with fork on e2)} 1. Nf5 Kxg2 $1 2. Ne3+ {fork} (2. g7 $4 h1=Q+) 2... Kg1 $1 3.
Nxc4 h1=Q+ 4. Kg7 {X1 line} Qb7 $1 $11 {The queen is ideally defending on 7-th
rank, and it is enough for black to capture g6 pawn or the knight with tempi})
({Immediate promoting only draws :} 1. f8=Q Kg1 2. Nh5 h1=Q $11 {and if} 3. g7
$4 ({on} 3. g3 {black plays} a5 4. Qf5 Qe4 5. Qxa5 Rc8 $11) 3... Rc6+) 1... Kg1
$1 (1... Kxg2 {Knight on h5 defends against check :} 2. g7 h1=Q 3. g8=Q+ $18)
2. Ng3 $1 ({Again, promoting is too early :} 2. f8=Q h1=Q $11 {
see comments to 1-st move}) 2... Rg4 (2... Rc3 3. Ne2+ {
fork on e2 instead of e3 in logical try line} Kxg2 4. Nxc3 h1=Q+ 5. Kg7 {
This X2 line is similar to the line shown on 1-st move, but the black King is
on g2 and not g1. If the king was on g1, black had drawing Qb7 move, but in
this case white is winning after,forexample} Qa1 6. f8=Q $18) 3. Nh1 $3 {
Finishing 3-knight moves maneuver on h1 square and sacrifices there the knight!
} (3. f8=Q Rxg3 4. Qc5+ Kxg2 $11) 3... Kxh1 4. f8=Q Rxg6+ $1 (4... Kg1 {
the difference from main line is that Rg4 is not defended} 5. Qc5+ Kxg2 6. Qd5+
Kg1 7. Qd1+ $18) (4... Kxg2 5. Qa8+ Kg1 6. Qxa7+ Kg2 7. Qb7+ Kg1 8. Qb1+ Kg2 9.
Kh5 $18) 5. Kh5 $3 (5. Kxg6 Kxg2 $11 {is draw, because white king is badly
placed on g6, with the king on h6 the position is won, because check on g-file}
6. Qa8+ Kg1 {and to continue with checks White needs to capture a7 pawn, which
leads to a draw}) 5... Kxg2 (5... Kg1 {not helps,} 6. Qc5+ Kxg2 7. Qc2+ $18) 6.
Qa8+ $1 Kg1 7. Qxa7+ Kg2 8. Qb7+ Kg1 9. Qb1+ $18 1-0

[Event "2.p Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Arestov=P Nielsen=S"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "4k3/8/3p4/8/3RKR2/1n1p4/4b1P1/8 w - - 0 1"]
[PlyCount "21"]
[EventDate "2021"]

1. Rd5 (1. Rxd6 d2 2. Rxd2 Nxd2+ 3. Ke3 Bf1 4. g3 (4. g4 Nc4+ 5. Kd4 Nd2 6. Kc3
Nb1+ 7. Kc2 Na3+ 8. Kb2 Nc4+ 9. Kc3 Ne5 (9... Ne3)) 4... Nc4+ 5. Kd4 Nd2 6. Kc3
Nb1+ 7. Kc2 Na3+ 8. Kb2 Nc4+ 9. Kc3 Nd6 10. Rxf1 Ne4+ 11. Kd4 Nxg3 12. Rf3 Nh5
13. Ke5 Ke7 14. Rf5 Ng7) 1... d2 2. Rxd2 Nxd2+ 3. Ke3 Bf1 4. g3 (4. g4 Nc4+ $11
) 4... Nc4+ 5. Kd4 Nd2 6. Kc3 Nb1+ 7. Kc2 Na3+ 8. Kb2 Nc4+ 9. Kc3 Ne3 10. Re4+
Kd7 11. Rxe3 1-0

[Event "3.p Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Minski=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "2nk4/5P1K/8/7P/N1R1Nq2/8/8/8 w - - 0 1"]
[PlyCount "19"]
[EventDate "2021"]

1. Nd6 $1 (1. Ng5 $6 Qf5+ $1 2. Kh8 Qf6+ {/Qe5+} 3. Kh7 Qf5+ $11 {
perpetual check}) (1. Rxc8+ $2 Kxc8 2. Kg7 Qg4+ $11) 1... Qxd6 2. Nb6 $3 (2.
Rd4 $6 Ke7 $1 (2... Qxd4 $2 3. f8=Q+ $18) 3. Rxd6 Nxd6 4. Kg7 Nf5+ $1 (4...
Nxf7 $2 5. Nc3 {/Nb6} Nd6 6. Nd5+ $18) 5. Kg8 Nh6+ 6. Kg7 Nf5+ 7. Kg6 Nh4+ 8.
Kg7 Nf5+ $11 {perpetual check}) 2... Nxb6 (2... Qe7 3. Rxc8# {
mate with self-block}) (2... Ke7 3. Nxc8+ $18) 3. Rd4 $1 {pin} Qd7 $1 {
counter-pin} (3... Qxd4 4. f8=Q+ Kc7 5. Qg7+ Qd7 6. h6 $1 (6. Qxd7+ $2 Nxd7 7.
h6 Nc5 $1 8. Kg6 (8. Kg8 Ne4 9. Kg7 Ng5 $11) 8... Ne6 9. Kf6 Nf8 10. Kf7 Nh7
11. Kg7 Ng5 12. Kg6 Ne6 $11) 6... Kd6 7. Qxd7+ Nxd7 8. Kg7 Ke7 9. h7 $18) (3...
Nd5 4. Rxd5 Qxd5 5. f8=Q+ Kc7 6. h6 $18) 4. Kg8 $3 {unpin} (4. Rxd7+ $2 Nxd7 5.
Kg7 Ke7 6. h6 Nf8 $11) (4. h6 $2 Ke7 $1 5. Rxd7+ Nxd7 6. Kg7 Nf8 $11) (4. Kg6
$2 Ke7 $1 5. Re4+ Kf8 6. Re8+ Qxe8 7. fxe8=Q+ Kxe8 8. h6 Nd7 {/Nc4=}) 4... Qxd4
(4... Nd5 5. f8=Q+ $18) 5. f8=Q+ Kd7 6. Qg7+ Qxg7+ 7. Kxg7 Nd5 8. h6 Ke7 9. h7
Nf6 10. h8=Q $18 1-0

[Event "4.p Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Sprenger=J"]
[Black ""]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "3n1K2/8/7k/3pN3/1p4Pp/4P3/7P/8 w - - 0 1"]
[PlyCount "43"]
[EventDate "2021"]

1. Nd3 $1 {Prophylaxis: White wants to play Kf8-e7, but first needs to do
something against the sacrifice Nc6+.} ({thematic try} 1. Ke7 $2 Nc6+ $1 {
thematic sacrifice for promoting the b-pawn} (1... b3 $2 2. Nd3 Kg5 3. h3 {
transposes to the main line} Nb7 4. Ke6 Nc5+ 5. Nxc5 b2 6. Kf7 {
and White draws.}) 2. Nxc6 b3 3. Kf6 b2 4. g5+ Kh5 $1 {With the white pawn
still on h2, the positional drawing idea does not work since the black king
escapes to g4, eg} 5. h3 b1=Q 6. Nd4 Qg6+ $19) 1... b3 2. Ke7 Kg5 $1 {
Preventing Kf6 and threatening Kxg4 and promotion of the h-pawn.} (2... Nc6+ 3.
Kf6 $10) (2... Nb7 3. Kf6 Nc5 4. g5+ Kh7 5. g6+ Kg8 6. Nb2 Nd7+ 7. Kg5 $1 $10)
3. h3 $1 (3. Kxd8 $2 Kxg4 $19 {and the black king runs to h2.}) 3... Nb7 (3...
Nc6+ 4. Kd6 (4. Kf7) 4... Nb4 5. Nb2 Nc2 6. Kxd5 Nxe3+ 7. Kd4 Nxg4 8. Nd3 $10)
4. Ke6 $1 (4. Kf7 $2 Nd6+ (4... Na5 $4 5. Kg7 Nc4 6. Nf4 $18) 5. Ke6 Nc4 $19)
4... Nc5+ $1 {Again, the thematic black sacrifice for ensuring pawn promotion,
this time on c5. However, here the situation is different from 1. Ke7? Sc6+!:}
5. Nxc5 b2 6. Kf7 $1 {Preparing a positional drawing fortress.} b1=Q (6... Kh6
7. Ne6 b1=Q) 7. Ne6+ Kh6 8. g5+ Kh5 9. Kf6 {Black is a queen up and on the
move, but he cannot free his king from the prison:} Qb6 10. Kf5 Qb1+ 11. Kf6
Qb2+ 12. Kf5 Qc2+ 13. Kf6 Qc3+ 14. Kf5 Qc8 15. Kf6 Qc3+ 16. Kf5 Qd3+ 17. Kf6
Qg6+ 18. Ke7 Qg8 19. Kf6 Qg6+ 20. Ke7 Qh7+ (20... d4 $5 {
The only attempt to break the deadlock.} 21. Nf4+ Kxg5 22. Nxg6 dxe3 23. Ne5
Kf4 24. Nd3+ $10 {and the white king returns in time.}) 21. Kf6 Qg6+ 22. Ke7
$10 {Theme: Positional draw escape in knight endgame with equal material}
1/2-1/2

[Event "sp.p Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Hlinka=M Kekely=L Arestov=P"]
[Black ""]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "K7/8/k7/1N2R3/8/q2p1R2/b7/4b3 b - - 0 1"]
[PlyCount "17"]
[EventDate "2021"]

1... Bd5+ $1 (1... Qb3 2. Rf6+ Ka5 3. Nc7+ Ka4 4. Ra6+ Kb4 5. Rb6+ Kc3 6. Rxb3+
Bxb3 7. Rxe1 $11) 2. Rxd5 Qa1 3. Rfxd3 (3. Rf6+ $2 Qxf6 4. Rd6+ Qxd6 5. Nxd6 d2
$19) (3. Kb8 $2 Kb6 4. Rd6+ Kxb5 5. Rfxd3 Bf2 6. Rd1 Qa7+ 7. Kc8 Bc5 $19) 3...
Kb6+ {main A} (3... Qh8+ {main B} 4. Rd8 Qh1+ 5. R8d5 $1 (5. R3d5 $2 Bg3 6.
R8d7 Qh8+ 7. Rd8 Qh7 8. R8d7 Qg8+ 9. Rd8 Qf7 10. R5d7 Qf3+ 11. Rd5 Qe4 12. Nd4
Kb6 $19) 5... Ba5 (5... Qh7 6. Nc7+ $1 Qxc7 7. Ra3+ Kb6 8. Rb3+ $11) 6. Nc7+ $1
Bxc7 7. Ra3+ Kb6 8. Ra6+ $1 Kxa6 {ideal pin stalemate}) 4. Na3 $1 (4. Kb8 $2
Qh8+ 5. Rd8 Bg3+ 6. Kc8 Qh7 $19) 4... Qh8+ {main A1} (4... Bb4 {main A2} 5.
Rb5+ Ka6 6. Rd6+ $1 Bxd6 7. Rb6+ $1 Kxb6 {ideal pin stalemate} (7... Ka5 8.
Nc4+ $11)) 5. Rd8 Qh1+ 6. R3d5 $1 (6. R8d5 $2 Qe4 7. Nc4+ Kc7 8. Ka7 Bf2+ $19)
6... Bg3 7. Nc4+ Ka6 8. Ne5 $1 Bxe5 9. R8d6+ $1 Bxd6 {ideal pin stalemate.
Synthesis of three ideal pin stalemates with all white pieces.} 1/2-1/2

[Event "1.hm Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Kopilov=E"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "8/k1K4p/2Pp4/7p/2P2N2/6P1/1p6/8 w - - 0 1"]
[PlyCount "17"]
[EventDate "2021"]

1. Kd8 (1. Kd7 b1=Q 2. c7 Qf5+ 3. Ne6 Qf7+) 1... b1=Q 2. c7 Qb6 3. Kd7 (3. Nd5
Qa5 4. Kd7 Qa4+) 3... Qb7 4. Nd5 (4. Ne6 Kb6 5. Kd8 Kc6 6. c8=Q+ Qxc8+ 7. Kxc8
d5 8. c5 d4 9. Nxd4+ Kxc5 10. Nf5 Kd5 11. Kd7 Ke5 12. Nh4 Kf6) 4... h4 5. gxh4
h5 6. Kd8 Qc6 7. c8=R (7. c8=Q Qe8+ 8. Kc7 Qc6+ 9. Kd8 Qe8+ 10. Kxe8) (7. Ne7
Qxc4 8. c8=Q Qxh4) 7... Qa6 (7... Qa4 8. Ra8+ Kxa8 9. Nb6+) (7... Qb7 8. Rc7)
8. Ra8+ Kxa8 9. Nc7+ 1-0

[Event "2.hm Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Hlinka=M Kekely=L"]
[Black ""]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/1k3r2/7p/7P/7P/5p1K/R1b5/6N1 w - - 0 1"]
[PlyCount "21"]
[EventDate "2021"]

1. Rb2+ $1 {refusal to capture} (1. Rxc2 $2 f2 2. Rxf2 Rxf2 3. Kg3 Rf8 $19)
1... Ka6 2. Ra2+ $1 (2. Rxc2 $2 f2 3. Rc1 f1=Q+ 4. Rxf1 Rxf1 $19) 2... Kb5 3.
Rb2+ (3. Nxf3 $2 Rxf3+ 4. Kg4 (4. Kg2 Be4 $19) 4... Bd1 $19) 3... Ka5 (3... Ka4
4. Nxf3 (4. Rxc2 f2 5. Rxf2 Rxf2 6. Kg3) 4... Rxf3+ 5. Kg4 Bd1 6. Rb1 Rd3+ 7.
Kf5 Rd6 8. Ke5 Rd8 9. Rb6) 4. Ra2+ $1 (4. Rxc2 $2 f2 5. Rxf2 Rxf2 6. Kg3 {
compare with 3...Ka4...6.Kg3} Rf6 $1 7. Nf3 (7. Nh3 Kb6 $19) 7... Kb6 $1 8. Ne5
Kc7 $1 9. Ng4 Ra6 $1 (9... Rb6 $2 10. Ne3 $1 Kd7 (10... Kd6 $2 11. Nc4+ $11)
11. Nf5 Rf6 12. Ne3 Kd6 13. Ng4 Re6 14. Kf4 Ke7 15. Ne3 Ra6 16. Nf5+ Kf6 17.
Nxh6 $11) 10. Kf4 Kd7 11. Nxh6 Rxh6 12. Kg5 Rh8 13. h6 Ke6 14. Kg6 Rg8+ $19)
4... Kb4 5. Rb2+ $1 (5. Rxc2 $2 f2 6. Rxf2 Rxf2 7. Kg3 Rf5 $1 $19 (7... Rf6 $2
8. Nf3 (8. Nh3))) (5. Nxf3 $2 Rxf3+ 6. Kg4 Bd1 7. Ra1 Rd3+ 8. Kf5 Rd6 $19) 5...
Kc3 (5... Ka3 6. Rxc2 f2 7. Rxf2 Rxf2 8. Kg3 $11) 6. Rb6 f2 7. Ne2+ Kc4 8. Ng3
Be4 {main A} (8... Rf3 {main B} 9. Kg2 Be4 (9... Rxg3+ 10. Kxf2 $11) 10. Kf1
Bd3+ 11. Kg2 {positional draw}) 9. Kh2 $1 (9. Rd6 $2 Rf3 $1 10. Rd1 Kc3 11. Kg4
(11. Kg2 Ba8 12. Kh3 Kc2 13. Ra1 Bd5 $19) 11... Bd5 12. Rc1+ Kd2 13. Ra1 Rf8
$19) 9... Kd3 10. Rb3+ $1 (10. Rxh6 $2 Rf4 $19) 10... Kd4 (10... Kc2 11. Rb4
Rf4 12. Nf1 Kd1 13. Kg3 Rf3+ 14. Kg4 $11) 11. Rb4+ $1 {positional draw} (11.
Rb6 $2 Ke3 12. Rb3+ Bd3 13. Nf1+ Ke2 14. Ng3+ Kd2 $19 {Refusals of captures.
Synthesis of positional draws.}) 1/2-1/2

[Event "3.hm Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Avni=A"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "R2N1r2/3p4/5k2/2p5/3R4/1pp2K2/8/8 w - - 0 1"]
[PlyCount "11"]
[EventDate "2021"]

{In order to win, white will have (1) to retract both his rooks to the first
rank, to avert promotion of black's advanced pawns. While doing this, he must 
(2) keep the BK far away, so that it wouldn't be able to support his advanced
pawns .} 1. Rf4+ $1 {split A)} ({the natural} 1. Rc4 {dosen't work:} Ke5+ 2.
Ke3 (2. Ke2 c2 3. Rb8 Kd5 4. Rc3 c4 5. Rb4 Rxd8 6. Rcxc4 Rg8 $11 {although a
rook up, white cannot win}) 2... b2 3. Rb8 Rf1 $11) 1... Kg7 ({B)} 1... Ke7 2.
Nc6+ $1 {thematic, an echo of 2.N:e6+ from variation A} dxc6 3. Rfxf8 c2 4.
Rfe8+ Kf7 5. Re1 (5. Rf8+ $2 Ke6 6. Rfe8+ Kd5 7. Ra1 b2 8. Ree1 Kc4 $11) 5...
b2 6. Raa1 $18 (6. Ra7+ Kf6 7. Raa1 {just prolongs the play})) ({C)} 1... Ke5
2. Nc6+ $1 {thematic} (2. Rxf8 c2 3. Re8+ Kd5 4. Re1 b2 5. Raa1 Kc4 $1 $11)
2... Kd6 {(variation C - continuation)} ({D)} 2... dxc6 3. Raxf8 {with this
rook now} (3. Rfxf8 $2 c2 4. Rfe8+ Kd4 5. Ra1 b2 6. Ree1 Kc3 $11) 3... c2 4.
Re4+ Kd6 ({BK cannot stay close to his pawns:} 4... Kd5 $4 5. Rd8#) 5. Re1 b2
6. Rd8+ Kc7 7. Rdd1 $18) 3. Rfxf8 c2 4. Rf6+ Kd5 5. Nb4+ $1 {yet another
knight sacrifice; opens the fifth rank} cxb4 6. Ra5+ Kc4 7. Rf4+ Kd3 (7... Kc3
8. Rc5+) 8. Rd5+ Kc3 9. Rc5+ (9. Ke2) 9... Kb2 10. Rxb4) 2. Ne6+ $1 (2. Rxf8 $2
Kxf8) 2... dxe6 3. Rfxf8 (3. Raxf8 $2 c2 $11) 3... c2 4. Rg8+ Kf7 5. Rg1 b2 6.
Raa1 $18 (6. Ra7+ Kf6 7. Raa1 {just prolongs the play}) 1-0

[Event "sp.hm Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Gonzalez=L"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "7k/1pPN4/1b2N1PP/8/8/6K1/8/2q5 w - - 0 1"]
[PlyCount "39"]
[EventDate "2021"]

1. g7+ (1. c8=Q+ Qxc8 2. g7+ Kg8 3. Nf6+ Kf7 4. g8=Q+ Qxg8+ 5. Nxg8) 1... Kh7
2. Ndf8+ (2. c8=Q Qe3+) 2... Kxh6 3. g8=N+ (3. c8=Q Bc7+ 4. Qxc7 (4. Nxc7 Qe3+
5. Kg4 Qe4+ 6. Kg3 Qe3+) 4... Qxc7+ 5. Nxc7 Kxg7 6. Nd7 b5) 3... Kh5 4. Nf6+ (
4. Ng7+ Kg5 5. Nfe6+ Kg6) 4... Kh6 5. c8=Q Qxc8 (5... Bf2+ 6. Kg4 Qxc8 7. Ng8#)
6. Ng8+ Kh5 7. Nf4+ Kg5 8. Nh7+ Kf5 9. Ne7+ Ke4 10. Ng5+ (10. Nf6+ Kd4 11. Nxc8
Bc7) (10. Nxc8 Bc7) 10... Ke3 11. Ng2+ (11. Nfd5+ Kd4 12. Nf3+ Kc5 13. Nxc8
Kxd5 14. Nxb6+ Kc6) (11. Nxc8 Bc7 12. Nge6 Bxf4+ 13. Nxf4 b5) 11... Kd4 (11...
Kd3 12. Nxc8 Bc5 13. Nf4+ Kc4 14. Ne4 b5 15. Ne6) (11... Ke2 12. Nxc8 Bc7+ 13.
Kg4 b5 14. Ne6 Be5 15. Kf5 Kf2 16. Nh4 Kg3 17. Ng6) 12. Nxc8 (12. Nf3+ Kc3 13.
Nxc8 Bc5 14. Nf4 b5 15. Ne6 Kc4 16. Kf4 Kd5 17. Kf5 Kc6 18. Ne5+ Kb7 19. Nxc5+
Kxc8) 12... Bc5 13. Nf4 b5 (13... Ke5) 14. Kf3 b4 15. Ne4 (15. Nge6+ Kc4 16.
Ke2 b3 17. Kd1 Kb5 18. Nd3 Ba3 19. Ne5) 15... Kc4 (15... b3 16. Ne6+ Kd5 17.
N6xc5 b2 18. Na4) 16. Ne6 (16. Ke2 b3 17. Nd3 b2 18. Nxb2+ Kd5 19. Kd3 Kc6 20.
Kc4 Kc7) 16... Bg1 (16... b3 17. N6xc5 b2 18. Nb6+ Kd4 19. Nb3+ Kd3 20. Nbd2
Kc2 21. Nbc4) 17. Ne7 (17. Ncd6+ Kd3) 17... b3 18. Ke2 b2 19. Nd2+ Kc3 20. Kd1
1-0

[Event "sp.hm Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Timman=J Garcia=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "1n2N3/k7/3R4/5K2/4Rn2/3P4/2p5/5r2 w - - 0 1"]
[PlyCount "39"]
[EventDate "2021"]

1. Re7+ Nd7 2. Rexd7+ Ka8 3. Ra6+ (3. Nc7+ Kb8 4. Na6+ Ka8 5. Rh6 Nxd3+ 6. Ke6
(6. Ke4 Nf2+ 7. Ke5 Ng4+) 6... Nf4+ 7. Ke5 Ng6+ 8. Rxg6 Re1+ 9. Kf6 Rf1+ 10.
Ke7 Re1+ 11. Kd8 c1=Q 12. Nc7+ Kb8) 3... Kb8 4. Rb6+ Ka8 (4... Kc8 5. Rc7+ Kd8
6. Rb8#) 5. Nc7+ Ka7 6. Rc6 Nxd3+ 7. Ke6 Nc5+ (7... Re1+ 8. Kd6 c1=Q 9. Nb5+
Kb8 10. Rb6+ Kc8 11. Na7#) 8. Rxc5 c1=Q (8... Re1+ 9. Kd5 c1=Q 10. Ne6+ Kb8 (
10... Kb6 11. Rd6+) 11. Rb5+ Ka8 (11... Kc8 12. Rd8#) 12. Ra5+ Kb8 13. Rd8+ Kb7
14. Nc5+ Kc7 (14... Kb6 15. Ra6+ Kb5 16. Rb8#) 15. Rd7+ Kb6 (15... Kb8 16. Rb7+
Kc8 17. Ra8#) 16. Ra6+ Kb5 17. Rb7#) 9. Nd5+ Ka8 (9... Ka6 10. Rd6+ Kb7 11.
Rb6+ Ka7 12. Ra5#) 10. Ra5+ Kb8 11. Rb5+ Ka8 (11... Kc8 12. Ne7#) 12. Nb6+ Kb8
13. Nc4+ Ka8 (13... Kc8 14. Nd6#) 14. Rd8+ Ka7 15. Ra5+ Kb7 16. Nd6+ Kc6 (16...
Kb6 17. Rb5+ Kc6 18. Rc8#) 17. Rc8+ (17. Ra6+ Kc5 18. Rc8+ Kd4) 17... Kb6 18.
Rb5+ Ka7 19. Rb7+ Ka6 20. Ra8# 1-0

[Event ".c Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Gromov=M Pervakov=O"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "b7/1n6/8/2P5/1k6/3KN2B/8/N7 w - - 0 1"]
[PlyCount "21"]
[EventDate "2021"]

1. c6 (1. Nd5+ Ka3 (1... Kxc5 2. Nc7) 2. c6 Nc5+ 3. Kc4 Bxc6 4. Kxc5 Bxd5 5.
Kxd5 Kb2) 1... Nc5+ 2. Kd4 Bxc6 3. Nac2+ (3. Nec2+ Kb5 4. Bf1+ Kb6) 3... Kb5 4.
Na3+ (4. Bf1+ Kb6 5. Nc4+ Kb5 6. N2a3+ Kb4 7. Nc2+ Kb5 8. Nd6+ Kb6 9. Nc8+ Kc7
10. Kxc5 Ba4 (10... Be4)) 4... Kb4 (4... Kb6 5. Nec4+) 5. Nec2+ Kb3 6. Kxc5 Be4
7. Be6+ (7. Ne3 Kxa3 8. Nc4+ Ka2) 7... Kb2 8. Ne3 Kxa3 9. Nc4+ Ka4 (9... Ka2)
10. Bd7+ (10. Bg4 Bc2) 10... Kb3 11. Nd2+ 1-0

[Event ".c Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Dore=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "K1k4N/P7/8/P7/3P4/1p6/8/8 w - - 0 1"]
[PlyCount "19"]
[EventDate "2021"]

1. Nf7 (1. Ng6 b2 2. Ne7+ Kd7 3. Nd5 b1=Q 4. Nb6+ Kc7 5. Nd5+ Kc6) 1... b2 2.
Nd6+ Kd7 (2... Kc7 3. Nb5+) 3. Kb8 (3. Kb7 b1=Q+) 3... b1=Q+ 4. Nb7 Qh7 5. Nc5+
(5. a8=Q Qh8+ 6. Nd8 Qxd8+ 7. Kb7 Qc7+ 8. Ka6 Qc4+ 9. Ka7 Qxd4+) 5... Kd6 6.
Ne4+ (6. Nb7+ Ke7 7. a8=Q Qh8+ 8. Ka7 Qxd4+ 9. Ka6) 6... Qxe4 7. a8=Q Qxd4 8.
Qa6+ Ke5 9. Qb6 (9. Qb5+ Ke4 (9... Kf4)) 9... Qd5 10. a6 (10. Qe3+ Kf5) 1-0

[Event ".c Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Campioli=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "K7/3R4/3P2p1/5p1k/7N/p7/2r5/8 w - - 0 1"]
[PlyCount "25"]
[EventDate "2021"]

1. Nf3 Kg4 (1... Rc8+ 2. Kb7 a2 3. Rh7+ Kg4 4. Rh1 Rh8 5. Ne5+ Kg3) 2. Ne5+ Kf4
3. Nd3+ (3. Nxg6+ Kg5) 3... Kg3 (3... Ke3 4. Re7+ Kxd3 5. d7) 4. Ra7 a2 5. Ne5
(5. d7 Rc7 6. d8=Q Rxa7+ 7. Kxa7 a1=Q+) 5... Rd2 6. d7 (6. Ra3+ Kf4 7. Nc4 Rd4)
6... Kf4 7. Nxg6+ Kg5 8. Nf8 (8. Ne5 Kf6) 8... Kf6 9. Kb8 (9. Kb7 Ke7 10. Ra8
f4 11. Kc7 Rc2+) 9... Ke7 10. Ng6+ (10. Kc7 Rc2+ 11. Kb6 Rb2+ 12. Kc5 Rc2+ 13.
Kb4 Rb2+) 10... Kd8 11. Ne5 Rb2+ 12. Ka8 Rb6 13. Nf7+ (13. Rxa2 Rb5 14. Re2 f4)
1-0

[Event ".c Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Ulrichsen=J"]
[Black ""]
[Result "1/2-1/2"]
[SetUp "1"]
[FEN "8/1N4pk/6p1/3K4/p5R1/8/1p6/8 w - - 0 1"]
[PlyCount "35"]

1. Rh4+ {wins an important tempo.} (1. Rb4 $2 a3 2. Nd6 a2 3. Rxb2 a1=Q {
and Black wins (7-man endgame database).}) 1... Kg8 2. Rb4 a3 3. Nd6 g5 ({Or} 
3... a2 4. Rb8+ Kh7 5. Nf7 g5 6. Rh8+ {etc. as in the main line.}) 4. Rb8+ Kh7
5. Nf7 a2 ({Or} 5... g4 6. Rb6 {threatening mate.} g5 (6... g6 7. Rb7 (7. Ng5+
Kh6 8. Nf7+)) 7. Rb7 (7. Nxg5+) 7... a2 8. Ne5+ $11) (5... Kg6 6. Ne5+ Kh7 7.
Nf7) 6. Rh8+ Kg6 7. Ne5+ Kf6 (7... Kf5 8. Rf8#) 8. Rf8+ Ke7 9. Ng6+ (9. Rf7+
Ke8 {and Black wins.}) 9... Kd7 10. Rf7+ ({Not} 10. Ne5+ $2 Kc7 11. Rf7+ Kb6
12. Nc4+ Ka6 {and Black wins.}) 10... Kc8 11. Kc6 Kb8 12. Rf8+ (12. Ne5 $2 b1=Q
13. Nd7+ Ka7 14. Nc5+ Ka8 15. Rf8+ Qb8 16. Rxb8+ Kxb8 17. Nb3 g4 {and Black
wins.}) 12... Ka7 13. Rf7+ Ka6 14. Rf8 Ka5 15. Kc5 Ka4 16. Kc4 Ka5 17. Kc5 Ka6
18. Kc6 $11 1/2-1/2

[Event ".c Moscow ty"]
[Site ""]
[Date "2021"]
[Round ""]
[White "Pastalaka=M"]
[Black ""]
[Result "1-0"]
[SetUp "1"]
[FEN "8/6pp/8/4b2K/1P6/B6k/PP6/8 w - - 0 1"]
[PlyCount "33"]
[EventDate "2021"]

1. Kg5 (1. b5 Bf4 2. Be7 g6#) 1... Bd4 (1... Kg3 2. b5 Bf4+ 3. Kf5 g6+ 4. Ke6
h5 5. Bd6 Bxd6 6. Kxd6 h4 7. b6 h3 8. b7 h2 9. b8=Q h1=Q 10. Kc5+) 2. b5 Be3+
3. Kf5 g5 4. b6 Bxb6 5. Kxg5 Be3+ 6. Kf5 Bc1 7. Ke4 (7. Bb4 Bxb2 8. Ke4 Bf6 9.
a4 Bd8) 7... Kg4 (7... h5 8. Bb4 h4 (8... Bxb2 9. a4 Bf6 10. a5 Bd8 11. a6 Bb6)
9. a4) 8. Bb4 Bxb2 9. a4 Bc1 (9... Bf6 10. a5 Bd8 11. a6 Bb6 12. Kd5) 10. a5
Bf4 11. Bd2 (11. a6 Bb8 12. Kd5 h5 13. Bd6 Ba7 14. Bc5 Bb8 15. Kc6 h4 16. Kb7
h3 17. Bg1 Kg3 18. Kxb8 Kg2 19. Bd4 h2 20. a7 h1=Q 21. a8=Q+ Kh2 22. Be5+ Kg1)
11... Bb8 12. Bh6 Kh5 13. Bf4 Ba7 14. Be3 Bb8 15. Kd5 Kg4 16. Kc6 h5 17. Kb7 1-0

