Shogi News : KAI becomes the challenger of the 21st Jo-ryu Oi Sen .

Shogi News : The 21st Jo-ryu Oi sen ; challenger deciding game


5:54 P.M. (JST) , 6 April 2010 after 117 moves KAI won the game . Then KAI becomes a challenger of the 21st Jo-ryu Oi sen title match .

The 21st Jo-ryu Oi sen 5 games title match between SHIMIZU and KAI will start 13 May 2010 at Keioplaza Hotel Sapporo , Sapporo city , Hokkaido .


You can see the original game record on the Net .
http://live3.shogi.or.jp/joryu-oui/kifu/jo_oui100406.html
(Flash version , written in Japanese language)
http://live3.shogi.or.jp/joryu-oui/kifu/jo_oui100406_j.html
(Java version , written in Japanese language)


Sente : KAI Tomomi (Jo-ryu 2 dan)
Gote : ISHIBASHI Sachio (Jo-ryu 4 dan)

(diagram 1)

1.P-7f P-3d
2.P-6f S-6b
3.R-7h P-8d
4.P-7e P-6d
5.S-6h S-6c
6.P-9f K-4b
7.S-6g K-3b
8.K-4h P-1d
9.P-1f S-4b
10.K-3h P-9d
11.K-2h P-8e
12.R-7f R-7b
13.B-9g R-9b
14.B-8h R-7b
15.B-7g S-3c
16.P-8f R-8b
17.S-3h Px8f
18.Rx8f Rx8f
19.Bx8f R*8g
(diagram 1)

KAI closed her Bishop line with 2.P-6f ISHIBASHI moved up her right Silver with 2...S-6b before the Rook Pawn advance . KAI ranged her Rook with 3.R-7h and advanced the 7th file Pawn with 4.P-7e to make an ISHIDA ryu hongumi formation .

ISHIBASHI quickly made a simple Funa gakoi with 9...S-4b and slid her Rook with 12...R-7b threatening an attack against KAI's 7f-Rook . KAI moved up her Bishop with 13.B-9g to defend the 7e-Pawn . ISHIBASHI ranged her Rook again with 13...R-9b aiming at the 9g-Bishop .

KAI backed her Bishop with 14.B-8h to avoid being attacked the 9th file . ISHIBASHI moved her Rook onto 7b again . KAI moved up her Bishop with 15.B-7g planing the line ...P-7d;Px7d,Sx7d;P-6e .

ISHIBASHI moved up her left Silver with 15...S-3c to prevent a Bishop exchange . And KAI started attacking with 16.P-8f . KAI made a Kata mino gakoi with 17.S-3h and after the Rook exchange , ISHIBASHI dropped a Rook with 19...R*8g to attack KAI's camp .

(diagram 2)

20.R*8b S-7b
21.S-7h Rx5g+
22.R-8e+ P-1e
23.Px1e P*1g
24.P*8c Lx1e
25.P-8b+ N-9c
26.+R-8d P-1h+
27.Lx1h P*1g
28.Lx1g Lx1g+
29.Kx1g S-6c
30.+Px9a +Rx6f
31.K-2h P*1g
32.L*1i S-5b
33.B-7g +R-6e
34.Lx1g L*7f
35.B-8h Lx7h+
36.Gx7h P*1f
37.Lx1f +R-7f
38.G-7g +Rx1f
39.L*1i +R-2e
40.+Rx9c +Rx7e
41.P*1c P*1a
42.+R-8b S-4b
43.N*4f B-4d
44.+P-8a
(diagram 2)

KAI also dropped her Rook with 20.R*8b attacking ISHIBASHI's King . ISHIBASHI backed her 6c-Silver with 20...S-7b blocking the 8b-Rook's power defending the 8a-Knight . KAI also backed her 6g-Silver with 21.S-7h defend the 8i-Knight and attacking the 8g-Rook .

ISHIBASHI made her Rook promoted with 21...Rx5g+ and KAI also made a promoted Rook with 22.R-8e+ . ISHIBASHI started attacking the 1st file with 22...P-1e . KAI dropped a Pawn with 24.P*8c attacking the 8th file .

ISHIBASHI tried to attack the 1st file for a while , however until 41.P*1c KAI succeeded to counter-attack here . KAI dropped a Knight with 43.N*4f and let her promoted Pawn crawl with 44.+P-8a to attack ISHIBASHI's camp slowly but steadily .

(diagram 3)

44...L*1e
45.Lx1e +Rx1e
46.L*1h +R-4e
47.+P-7a G6a-5a
48.P*6c Sx6c
49.P-1b+ Px1b
50.P*6b L*7d
51.P*7f +R-6e
52.P-6a+ Lx7f
53.+Px5a Gx5a
54.Gx7f +Rx7f
55.Bx4d Px4d
56.Nx3d S*3c
57.+P-6a G-4a
58.Nx4b+ Sx4b
59.S*3d resigns
(diagram 3)

After 117 moves , KAI won the game .