[Event "USA Championship 2021"]
[Site "Saint Louis"]
[Date "2021.10.08"]
[Round "1.2"]
[White "Robson, Ray"]
[Black "Naroditsky, Daniel"]
[Result "1-0"]
[ECO "B03"]
[WhiteElo "2669"]
[BlackElo "2623"]
[Annotator "TA"]
[PlyCount "95"]
[EventDate "2021.10.06"]
[EventCountry "USA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
{[%evp 27,95,48,51,33,49,37,37,41,81,33,47,20,47,48,58,51,111,104,90,105,177,
172,167,170,144,166,156,168,220,215,230,232,288,281,289,269,325,332,339,337,
315,314,356,356,349,349,368,361,843,841,791,779,745,0,775,0,737,731,1096,1088,
1066,1027,564,919,29983,29984,12844,12842,29986,29987]} 1. e4 Nf6 2. e5 Nd5 3.
d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Be7 10. Be2
(10. d5 Nb4 11. Rc1 $13) 10... O-O 11. O-O f6 12. exf6 Bxf6 13. Qd2 {13.b3
gains popularity.} Qe7 {[%csl Gb2,Gb7,Rc2,Gc3,Rd3,Gd4,Rd7,Ge3,Re4,Re7,Gf2,Rf3,
Rg2,Gg7][%CAl Gd4e5,Gf6g7,Gf6g5,Gf3g5,Gf3e5,Ge3g5,Ge4d5,Gc6b7,Gc6b5,Gd5c4,
Ge2c4,Gc3d5,Gc3b5,Rd5e6,Re6d7,Re5d6,Rd6e7]} 14. Rad1 Rad8 15. Kh1 {B03:
Alekhine's Defence: Four Pawns Attack.} (15. Qc1 h6 (15... e5 $5 {cf
Koch-Boulard} 16. dxe5 Nxe5 17. c5 Ng4 18. Rxd8 Rxd8 19. cxb6 Nxe3 20. bxc7 Rc8
21. Re1 Qc5 22. Ne4 Qb6 23. Nxf6+ gxf6 24. Kh1 Rxc7 25. Qd2 Rc2 26. Bc4+ Rxc4
27. Rxe3 Be4 28. Ne1 Qc6 29. h3 Kf7 30. b3 Rc5 31. Qd4 f5 32. Rg3 Rc1 33. Rg7+
Ke6 34. Qd2 Qc3 35. Qxc3 Rxc3 36. Nf3 h6 37. Rg6+ Kd5 38. Rxh6 Bxf3 39. gxf3
Rxf3 40. Rh7 Rf2 41. a4 Kc6 42. b4 a6 43. Rh6+ Kc7 44. a5 Rf4 45. Rb6 Rh4 46.
Kh2 f4 47. b5 axb5 48. Rxb5 Kc6 {1/2-1/2 (48) Daillet,E-Alingh Prins,J ICCF
corr 1990}) (15... Rfe8 {Stein-Podgayets} 16. Kh1 h6 17. h3 Kh8 18. Bg1 Bh7 19.
Rfe1 e5 (19... Qf7 20. Qf4 g5 21. Qg3 Qg7 22. c5 Nd5 23. Bb5 Ndb4 24. Ne4 Rf8
25. Nxf6 Rxf6 26. d5 Rxd5 27. Rxd5 exd5 28. a3 Nc2 29. Re8+ Rf8 30. Bxc6 bxc6
31. Rxf8+ Qxf8 32. Qxc7 Be4 33. Nd2 Qe8 34. Nxe4 dxe4 35. Qd6 e3 36. Qxh6+ Kg8
37. Qxg5+ Kh7 38. Qf5+ Qg6 39. Qd7+ Kg8 40. Qd8+ Kf7 41. Qc7+ Kg8 42. Qb8+ Kh7
43. Qxa7+ Kg8 44. Qe7 Qd3 45. Qd6 {1-0 (45) Gromotka,E (2285)-Kantorik,M ICCF
corr 1997 Telechess CBM 114 [Gromotka,Eberhard]}) 20. Nd5 Nxd5 21. cxd5 Rxd5
22. Bc4 Rdd8 23. dxe5 Bh4 24. Rxd8 Rxd8 25. Nxh4 Qxh4 26. b3 Re8 27. e6 Bf5 28.
Qd2 Qf6 29. Qf4 Na5 30. Re5 {1-0 (30) Jacobs,J-Eales,R Teeside 1974}) (15...
Rd7 16. Rd2 Rfd8 17. Rfd1 Bg6 18. b3 a6 19. h3 Nc8 20. Bf2 Nd6 21. d5 Bxc3 22.
Qxc3 Ne4 23. dxc6 Rxd2 {0-1 (23) Petrosian,T-Schneider,M Schweinfurt 1965}) (
15... Kh8 16. Kh1 Rfe8 17. h3 Bg6 18. g4 h6 19. g5 hxg5 20. Rg1 e5 21. d5 Nd4
22. Nxg5 c6 23. dxc6 bxc6 24. Bf1 Bh5 25. Nce4 Rf8 26. Rd2 Nf3 27. Bc5 Rxd2 28.
Bg2 Qd7 29. Nxf3 Bxf3 {0-1 (29) Lanc,A-Vaganian,R Teeside 1974}) 16. Kh1 (16.
h3 {Yudasin-Kengis}) 16... Kh8 17. h3 Bg6 {N; presumably Oim had an
improvement ready for the usual 17...Bh7 but he doesn't say what it was.} (
17... Bh7 {Klundt-Grzesik} 18. Bg1 Rd7 19. Rd2 Rfd8 20. Rfd1 e5 21. d5 Nd4 22.
Bxd4 exd4 23. Nb5 d3 24. Bxd3 Bxd3 25. Rxd3 c6 26. Na3 Na4 27. Re3 Qc5 28. Ne5
Bxe5 29. Rxe5 cxd5 30. Qc2 Nb6 {1/2-1/2 (30) Simon,O (2315)-Therkildsen,T
(2183) Aix les Bains 2003}) 18. b3 Rfe8 (18... Rd7 $5) 19. Bg1 (19. Rfe1 Qf7
20. Bg1 Re7) 19... Kg8 $2 (19... Rd7 $5 20. Qe3 (20. c5 $6 Nd5 21. Bb5 Nxc3 22.
Qxc3 Be4 $15) 20... Red8 21. Ne5 Nxe5 22. dxe5 Bg5 23. Qf3 $14) 20. Qe3 $1 $16
Qa3 $6 (20... Rd7 21. Ne4 $16) (20... Bh5 21. Qe4 $16 {threat Bd3}) (20... e5
21. d5 e4 (21... Nb4 22. Ne4 $16) 22. dxc6 exf3 23. Qxe7 $16) (20... Nc8 21. c5
Qd7 22. Bc4 Na5 23. Bb5 $16) 21. Ne4 Be7 (21... Bxe4 22. Qxe4 Nb4 (22... Qxa2
23. Bh2 e5 24. dxe5) 23. Nd2) 22. Bd3 Bh7 23. Bh2 Rc8 $2 24. Bf4 Nd7 25. Bxh6
$1 gxh6 26. Qxh6 {threat Nfg5} Bf8 (26... Nf8 27. Nfg5 Bxg5 28. Nxg5 Bxd3 29.
Rxd3 $18) 27. Qh5 $1 Qe7 28. Nfg5 Bf5 29. Rxf5 $1 exf5 30. c5 $1 {1-0 (30) Oim,
T-Santoro,G ICCF corr 1987 Corr 2002 [Oim/Pokhla]} (30. c5 {threat Bc4+} Nde5 (
30... Na5 31. Rf1 $1 Qg7 32. Rxf5 Re7 33. c6 $1 {Harry Pokhla in book on Oim;
other notes by Oim, CC INF2 p208}) 31. Nf6+ $1 Kg7 32. Qh7+ Kxf6 33. Qxf5+ Kg7
34. Qh7+ Kf6 35. Rf1+ Kxg5 36. Rf5# {mate})) (15. c5 Nd5 16. Nxd5 (16. a3 Kh8
17. Bc4 Nxe3 18. Qxe3 Bg4 19. Ne2 Bxf3 20. Rxf3 Bxd4 21. Rxd4 Nxd4 22. Nxd4
Qxc5 23. Rxf8+ Rxf8 24. Bb3 Rd8 {0-1 (24) Naegeli,O-Muffang,A The Hague 1928
EXT 2002 [ChessBase]}) 16... exd5 17. Rde1 (17. Bb5 h6 {/\ Be4}) 17... a6 $2 (
17... h6 $1 18. Bb5 Be4 19. Bxc6 bxc6 20. Bf4 Rb8 21. Be5 Kh7 $13) (17... Be4
18. Bb5 Bxf3 19. Rxf3 Nxd4 $2 20. Rxf6 Nxb5 21. Rxf8+ Qxf8 22. a4 $18) 18. Bd1
Be4 (18... Qe4 $6 {/\ Qd3}) 19. Ba4 h6 20. Bxc6 bxc6 21. Bf4 Kh7 22. Be5 (22.
Ne5 Qe6) 22... Rf7 {[/\ Rg5]} 23. Bxf6 gxf6 24. Qf4 Rg8 25. Re2 Rfg7 26. Rff2
Rg4 27. Qf5+ Kh8 28. Ne1 R4g6 29. Qh3 Qg7 $17 30. Rf4 Kh7 31. Nf3 $2 f5 $19 32.
Rh4 Rg4 33. Rh5 Bxf3 $2 (33... f4 $1) 34. Re7 $1 Rxg2+ 35. Kf1 Be2+ 36. Ke1
Qxe7 $2 (36... Bxh5 $1 37. Rxg7+ R8xg7 $19) 37. Rxh6+ Kg7 38. Rh7+ Kf6 (38...
Kf8 39. Qxf5+ Ke8 40. Qc8+ Qd8 41. Qe6+ $18) 39. Qh4+ R2g5 40. Rxe7 Kxe7 41.
Kxe2 Kd7 42. Kf3 R8g7 (42... Kc8 $1 {/\ Kb7}) 43. h3 Kc8 44. Kf4 Rg2 45. Kxf5
Kb7 46. Kf6 R7g3 47. Ke6 Re2+ 48. Kd7 Rg7+ 49. Kd8 Rxb2 50. Qe1 $2 (50. Qh6
Rbg2) 50... Ka7 {[/\ Rb8#] 0-1 (50) Denman,B-Pytel,K Skopje 1972 EXT 2000
[Pytel,K]}) (15. b3 Bg6 (15... h6 16. Qe1 g5 17. Qg3 Qg7 18. Nb5 a6 19. Nxc7
Nxd4 20. Nxd4 Bxd4 21. Nxe6 Bxe6 22. Rxf8+ Kxf8 23. Qf2+ Qf7 24. Qxf7+ Kxf7 25.
Rxd4 Rxd4 26. Bxd4 Nc8 27. Bf3 b5 28. c5 Ne7 29. Kf2 Bd5 30. Bxd5+ Nxd5 31. Kf3
Ke6 32. Ke4 h5 33. a4 bxa4 34. bxa4 g4 35. h3 gxh3 36. gxh3 Nb4 37. Bc3 Nd5 38.
Bd2 Nc7 39. Kf4 Kd5 40. Be3 Ne6+ 41. Kf5 a5 42. c6 Nc7 43. Bb6 Kxc6 44. Bxc7
Kxc7 45. Kg5 Kd6 46. Kxh5 Kc5 47. Kg6 Kb4 48. h4 Kxa4 49. h5 Kb3 50. h6 a4 51.
h7 a3 52. h8=Q a2 53. Qa1 Ka3 54. Kf5 Kb3 55. Ke4 Ka3 56. Kd3 Kb3 57. Kd2 Ka3
58. Kc2 {1-0 (58) Legenia,A (2144)-San,T (2242) Chess.com INT 2021}) 16. Bf2
Ne5 17. h3 Nxf3+ 18. Bxf3 c6 19. Rfe1 Qd7 20. Ne4 Bxe4 21. Rxe4 e5 22. Bg4 Qf7
23. Qe2 Rde8 24. dxe5 Be7 25. e6 Qf6 26. a4 Rd8 27. Red4 Bc5 28. Rxd8 Bxf2+ 29.
Kh1 Rxd8 30. Rxd8+ Qxd8 31. e7 {1-0 (31) Welz,P (2138)-Mohnblatt,D (1880) Aix
les Bains 2011}) (15. Qe1 Bg4 (15... Kh8 16. Qg3 Nc8 17. Bf4 Nxd4 18. Bxc7
Nxe2+ 19. Nxe2 Rxd1 20. Rxd1 Qc5+ 21. Ned4 Bc2 22. Rd2 Ba4 23. b4 Qxc4 24. h3
Qxb4 25. Nxe6 {1-0 (25) Molnar,F-Brandwein,S Paris 1971 EXT 2015 [Molnar,F/
Primel,D]}) 16. Qg3 Bxf3 17. Rxf3 Nxd4 18. Bxd4 Bxd4+ 19. Kh1 Bxc3 20. Rxf8+
Qxf8 21. Rxd8 Qxd8 22. Qxc3 c5 23. Qe5 Qe7 24. Bg4 Kf7 25. Qh5+ Kg8 26. Qe5 Kf7
27. Qh5+ Kf8 28. Qe5 Nd7 29. Qxe6 Qxe6 30. Bxe6 Nf6 31. Kg1 Ke7 32. Bf5 Kd6 33.
Kf2 Ke5 34. Bd3 Kd4 35. Ke2 Ne4 36. b3 h6 37. a3 Nf6 38. Kd2 Ng4 39. h3 Ne5 40.
Bf5 a5 41. Bc8 b6 42. a4 Nf7 43. Be6 Nd6 44. Bd5 Nf5 45. Bf3 Ng3 46. Bc6 Nf1+
47. Ke2 Ne3 48. g3 Nf5 49. g4 Nh4 50. Kd2 Ng6 51. Ke2 Nf4+ 52. Kd2 Nxh3 53. Bg2
Ng5 {0-1 (53) Chambers,C-Kucuksari,K (2369) Chess.com INT 2021}) 15... h6 16.
h3 Rd7 {[#]} (16... Kh8 17. Qe1 Bc2 18. Rd2 Bh7 19. Qf2 Qe8 20. Qg3 Qe7 21. Qf2
Qe8 22. Qg3 Rd7 23. Bg1 Qe7 24. c5 Nd5 25. Bb5 Rdd8 26. Re1 Qf7 27. Ne4 Be7 28.
Bh2 a6 29. Ba4 Qh5 30. Qg4 Qf7 31. Nc3 Bf5 32. Qg3 Rc8 33. a3 Bf6 34. Ne4 Bd8
35. Nh4 Qh5 36. Nxf5 exf5 37. Bd1 Qf7 38. Rf1 Qe8 39. Nc3 Bg5 40. Rd3 Ne3 41.
Rf3 Nc4 42. Qf2 b5 43. b3 Nxa3 44. h4 Bf6 45. Nd5 {1-0 (45) Ivic,V (2582)
-Muradli,M (2461) Belgrade 2021}) 17. Qc1 $146 {White is slightly better.} ({
Predecessor:} 17. c5 Nd5 18. Bg1 Qd8 19. Bh2 Rdf7 20. Bb5 Bg6 21. Qe2 Qe8 22.
Rfe1 Re7 23. Ne4 {1-0 (52) Byrne, M-Bradney,R (1871) ICCF email 2017}) 17...
Re8 18. Rd2 Qd8 {[%CAl Rf6d4]} 19. Rfd1 Kh8 20. b3 Bh7 21. Bg1 Nc8 {White
leaves nothing to chance now.} (21... Bg6 $14) 22. d5 $16 exd5 23. Nxd5 Be4 (
23... Be5 $16 {was necessary.}) 24. Nxf6 $18 Rxd2 25. Nxd2 ({Not} 25. Rxd2 Qxf6
26. Qb2 Qg6 $11) (25. Nxe8 $6 Rxd1 26. Bxd1 (26. Qxd1 Qxe8 27. Bh2 Qe7 $14)
26... Qxe8 $14) 25... Bxg2+ 26. Kxg2 Rxe2+ 27. Kf1 {[#] Nde4 is the strong
threat.} Rxd2 (27... Re6 $142 28. Nd5 Qg5) 28. Rxd2 $40 {[%mdl 128] White is
out for blood.} ({Don't play} 28. Qxd2 $6 Qxf6+ 29. Qf2 Qe6) 28... Qxf6+ 29.
Rf2 Qd8 30. Qd2 {Strongly threatening Qxd8+.} Qe8 31. Qf4 {aiming for Qf8+.}
Kg8 32. Qxc7 Qe6 33. Qg3 ({Inferior is} 33. Qxb7 Qxh3+ 34. Ke2 Qg4+ 35. Kf1
Qh3+ 36. Rg2 N8e7 $11) 33... Nd6 {intending ...Nf5.} 34. Qg4 Qe7 35. Bh2 Nf7
36. Qc8+ Kh7 37. Qc7 Qe4 (37... Qxc7 38. Bxc7 Ng5) 38. Qxf7 Qh1+ 39. Ke2 Qe4+
40. Kf1 Qh1+ 41. Ke2 Qe4+ 42. Kd2 Nd4 43. Qf4 Qc2+ 44. Ke3 Qc3+ 45. Ke4 Ne6 46.
Qf5+ {[%mdl 64] Double Attack} Kh8 47. Be5 Ng5+ {[#]} 48. Qxg5 $3 {[%csl Ge5]
[%CAl Rg5g7][%mdl 512] Weighted Error Value: White=0.38/ Black=0.25} 1-0
