[Event "WYCC U14g"]
[Site "?"]
[Date "2014.09.29"]
[Round "11"]
[White "Kozina, Anastasia"]
[Black "Zhou, Qiyu"]
[Result "1/2-1/2"]
[ECO "C47"]
[Annotator "John"]
[PlyCount "114"]
1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Be2 $5 {
Provocatively unambitous? More common, and better-scoring, is 4.Bb5 (and 4.d4)
but White might have been scared off by Qiyu's round 9 win against a Russian
girl:} (4. Bb5 Nd4 5. Nxe5 Qe7 6. f4 Nxb5 7. Nxb5 d6 8. Nf3 Qxe4+ 9. Kf2 Ng4+
10. Kg3 Qg6 $1 {all theory so far.} 11. Nh4 Qh5 $1 12. h3 (12. Nxc7+ Kd8 13.
Nxa8 g5 $3 14. fxg5 Qxg5 15. Nf3 Qg7 $19 (15... Qg6 $19)) 12... Qxb5 13. a4 Qc6
14. hxg4 d5 15. Re1+ Kd8 16. b3 h5 $1 $36 {0-1 (43), 43) Shuvalova Polina
(RUS)-Zhou Qiyu (CAN) WYCC U14g, 2014}) 4... d5 $1 $11 5. exd5 Nxd5 6. O-O Be6
(6... Nxc3 7. bxc3 Bd6 8. d4 O-O 9. Re1 Bf5 10. Bd3 Bg4 11. h3 Bxf3 12. Qxf3
exd4 13. cxd4 Nxd4 14. Qxb7 $14 {1/2-1/2 (22) Grischuk,A (2785)-Fressinet,L
(2708) Riga, 2013.}) 7. d4 exd4 8. Nxd4 Nxd4 9. Qxd4 Qf6 10. Qa4+ (10. Qxf6
gxf6 (10... Nxf6 11. Nb5 O-O-O 12. Nxa7+ Kb8 13. Nb5 $16 {Black doesn't have
enough for the pawn.}) 11. Nxd5 Bxd5 $14 {The half-open g-file is probably not
enough for the fractured pawns.}) 10... c6 11. Bf3 Nb6 12. Qa5 Be7 13. b3 O-O
14. Bb2 Qh6 ({Black avoids the Q exchange, probably to keep more winning
potential in a complex game.} 14... Qf5 15. Qxf5 Bxf5 $11) 15. Ne4 Nd5 16. Bc1
Qg6 {Diagram [#] Right around here the players on board 1 agreed to a draw onmove 29 in an equal N ending,
meaning that a win would guarantee Qiyu the Championship, while a draw would
create a two-way to tie for first... and ulcers while waiting to see what
happens with the tie-breaks.} 17. c4 $4 (17. Ba3 $142) 17... Nf6 $2 {A rare
missed tactical opportunity.} (17... Bb4 $1 $19 18. Qa4 a5 19. cxd5 Bxd5 {and
White's best defence to 20...b5, trapping the Qa4, is:} 20. Ba3 b5 21. Bxb4
bxa4 22. Bxf8 Kxf8 {When Black has a Q for R and N, and should be able to win
another P on the queenside. I think this is Qiyu's only significant tactical
oversight during the entire event (!).}) 18. Ng3 Rfd8 19. Bf4 Bg4 20. Bxg4 Qxg4
21. Be3 b6 22. Qf5 Bb4 23. Qc2 Rd7 24. c5 b5 ({The computer prefers} 24... Qg6
25. Qxg6 hxg6 26. cxb6 axb6 27. Bxb6 {and Black's activity gets her pawn back:}
Rd2 (27... Rd3 $1) 28. a4 Nd5 (28... Rd3) 29. a5 Nxb6 30. axb6 Rb8 31. Ra6 Rb2
$11) 25. a4 $6 bxa4 26. Rxa4 a5 27. h3 Qe6 28. Nf5 Nd5 29. Bd4 f6 30. Nd6 Nf4
31. Be3 Nd5 32. Bd4 Nf4 33. Be3 Nd5 34. Bd4 {White could claim a draw here as
it is a three-fold repetition, but perhaps chose not to because White had 15+
minutes on her clock while Black had only 2 minutes (plus 30 second increment)
to make her next six moves. Of course, Black can claim a draw by stating her
intention to play ...Nf4, but...} Nb6 $5 {Yipes!! Bucholtz Denied! Qiyu
stays true to herself and plays for the win!} 35. cxb6 Qxd6 36. Qc4+ Kh8 37.
Be3 c5 38. Qg4 Rad8 39. Raa1 Qxb6 40. Rad1 Qc6 {Making the time control with 1
minute to spare... and an extra pawn! From here on White plays very fast,
which is smart: she has nothing to lose, and all the pressure is on Black to
convert.} 41. Rxd7 Qxd7 42. Qc4 Qd5 43. Qb5 h6 $6 {Cautious, but unnecessary
as White can't exploit Black's back rank:} (43... Qxb3 $1 44. Bxc5 $140 $4 Qd5
$19 45. Rc1 Rc8 (45... Kg8 {works too:} 46. Qc4 Qxc4 47. Rxc4 Rc8 $19) 46. Qa6
Rxc5 47. Rxc5 (47. Qc8+ Rxc8 48. Rxc8+ Qg8 $19) 47... Qxc5 48. Qa8+ Qf8 $19)
44. Qb6 Rc8 45. Qa6 Ra8 46. Qb6 Rc8 47. Qa6 Ra8 48. Qb6 Qxb3 49. Bxc5 Rc8 50.
Be3 Qd5 51. Ra1 Kh7 52. Qa7 Ra8 53. Qb6 Rc8 54. Qa7 {Qiyu is getting in
time-trouble again here: under 2 minutes (plus 30 second increment) for the
rest of the game. White, who has been playing fast, has 31 miinutes left.} Rc2
55. Qb6 Rc6 56. Qa7 Rc2 57. Qb6 Rc6 {And so we go to the tie-breaks...} 1/2-1/2
