Shogi news : YAMASAKI becomes a challenger of Oza sen . (Oza sen)

Shogi News : The 57th Oza sen : challenger deciding game

11:00 P.M. 27 July 2009 , after 141 moves , YAMASAKI won the challenger deciding game of the 57th Oza sen . Then YAMASAKI becomes a challenger , and he will have the 57th Oza sen title match with HABU . The title match will start 4 September 2009 , at Meguro ku , Tokyo .



You can see the game record on the Net .
http://live3.shogi.or.jp/ouza/kifu/20090727.html
(Flash version , written in Japanese language)
http://live3.shogi.or.jp/ouza/kifu/j_20090727.html
(Java version , written in Japanese language)


Sente : YAMASAKI Takayuki (7 dan)
Gote : NAKAGAWA Daisuke (7 dan)

(diagram 1)

1.P-2f P-8d
2.P-2e P-8e
3.G-7h G-3b
4.P-2d Px2d
5.Rx2d P*2c
6.R-2h P-3d
7.S-3h G-5b
8.S-2g P-4d
9.P-7f P-8f
10.Px8f Rx8f
11.S-3f G5b-4c
12.K-6i R-8b
13.P*8g P-5d
(diagram 1)


YAMASAKI selected Aigakari as the opening of this game , and NAKAGAWA accepted it . After the 2nf file Pawn exchange , YAMASAKI backed his Rook with 6.R-2h , in other word he selected Hiki Hisha formation .

NAKAGAWA opened his Bishop line with 6...P-3d , before exchanging the 8th file Pawn . YAMASAKI advanced his right Silver with 8.S-2g , the beggining of Hiki Hisha Bougin .

NAKAGAWA developped his camp very unique way . He closed the Bishop line with 8...P-4d , moved up the right Gold with 11...G5b-4c and pushed the 5th file Pawn .

(diagram 2)

14.G-5h S-6b
15.S-6h S-5c
16.P-4f K-4a
17.S-2e N-3c
18.S-3f S3a-4b
19.S-4g P-7d
20.S-7g S-6d
21.P-6f P-5e
22.P-5f P-4e
23.S-6h
(diagram 2)






YAMASAKI made Kani gakoi , and forced NAKAGAWA to jump the left Knight with 17...N-3c by advancing the Silver with 17.S-2e . Then NAKAGAWA's Bishop became difficult to use .

After all this moves , YAMASAKI started advancing his Kani gakoi to Yagura gakoi . But NAKAGAWA started attacking with 21...P-5e & 22...P-4e .

(diagram 3)

23...G-5d
24.G5h-6g P-1d
25.P*2d Px2d
26.Px4e Px5f
27.P-6e S6d-5c
28.K-7i P-5g+
29.Sx5g N-7c
30.S4g-5f B-1c
31.S-6h P-2e
32.P-7e P*8f
33.Px8f P*8g
34.Gx8g P*8e
35.Px8e Gx6e
36.Sx6e Nx6e
37.K-7h S-6d
38.P*5c Sx7e
(diagram 3)

NAKAGAWA effecively used his most pieces to attack . And he got an advantage .

(diagram 4)

39.G*7f P*8f
40.G8gx8f Sx8f
41.Gx8f G*5g
42.B-5e S*6d
43.S*7c R-9b
44.Sx6d+ Px6d
45.P*7b P*5a
46.P-5b+ Px5b
47.S*8c K-3a
48.P*2c Gx2c
49.P-4d S*5d
50.B-8h K-2b
51.P*5c Px5c
52.P*5e Gx6g
53.Sx6g G*6h
54.Rx6h Bx6h+
55.Kx6h R*2h
56.G*5h N-4e
57.K-7h N4e-5g+
58.P*2d +Nx6g
59.Kx6g S*5f
60.K-7f Rx5h+
61.Px2c+ Kx2c
62.K-8g S-6g+
63.Sx9b= +R-7h
64.K-9f +Rx8h
65.R*2a G*2b
66.B*4a K-3c
67.Rx2b+ Kx4d
68.+Rx4b P*4c
69.G*5f B*6i
70.N*8g S-4e
71.G*4f resigns
(diagram 4)

After 141 moves , YAMASAKI won the game .